fishHEADmaster

44 files changed, 10909 insertions, 0 deletions

diff --git a/compat/Kconfig b/compat/Kconfig
new file mode 100644
index 0000000..61c79a1
--- /dev/null
+++ b/compat/Kconfig
@@ -0,0 +1,207 @@
+#
+# backport Kconfig
+#
+# Some options are user-selectable ("BACKPORT_USERSEL_*")
+#
+# Most options, however, follow a few different schemes:
+#
+# A) An option that is selected by drivers ("select FOO") will be
+#    changed to "select BACKPORT_FOO" (if the option BACKPORT_FOO
+#    exists). The option BACKPORT_FOO then controls setting of the
+#    BACKPORT_BUILD_FOO option, which is a module, like this:
+#
+# config BACKPORT_BUILD_FOO
+#	tristate
+#	# or bool
+#
+#	# not possible on kernel < X.Y, build will fail if any
+#	# drivers are allowed to build on kernels < X.Y
+#	depends on BACKPORT_KERNEL_X_Y
+#
+#	# don't build the backport code if FOO is in the kernel
+#	# already, but only if the kernel version is also >= X.Z;
+#	# this is an example of backporting where the version of
+#	# the FOO subsystem that we need is only available from
+#	# kernel version X.Z
+#	depends on !FOO || BACKPORT_KERNEL_X_Z
+#
+#	# build if driver needs it (it selects BACKPORT_FOO)
+#	default m if BACKPORT_FOO
+#
+#	# or for build-testing (BACKPORT_USERSEL_BUILD_ALL is enabled)
+#	default m if BACKPORT_USERSEL_BUILD_ALL
+#
+# config BACKPORT_FOO
+#	bool
+#
+# This only works as-is if the kernel code is usable on any version,
+# otherwise the "&& !FOO" part needs to be different.
+#
+#
+# B) An option for code always present on some kernels (e.g. KFIFO).
+#    This simply depends on/sets the default based on the version:
+#
+# config BACKPORT_BUILD_KFIFO
+#	def_bool y
+#	depends on BACKPORT_KERNEL_2_6_36
+#
+#
+# C) similarly, a kconfig symbol for an option, e.g.
+#    BACKPORT_OPTION_BT_SOCK_CREATE_NEEDS_KERN (see below)
+#
+#
+# Variations are obviously possible.
+#
+
+config BACKPORT_BUILD_FW_LOADER
+	tristate
+	depends on m
+	# RHEL6, starting from 6.0, backports the FW loader already
+	depends on !BACKPORT_RHEL_KERNEL_6_0
+	depends on !FW_LOADER || BACKPORT_KERNEL_2_6_33
+	default m if BACKPORT_FW_LOADER
+	default m if BACKPORT_USERSEL_BUILD_ALL
+
+config BACKPORT_FW_LOADER
+	bool
+
+config BACKPORT_USERSEL_NET_SCH_CODEL
+	tristate "codel"
+	depends on m
+	depends on m
+	depends on !BACKPORT_KERNEL_2_6_25
+	default m if NET_SCH_CODEL=n
+	default m if BACKPORT_USERSEL_BUILD_ALL
+
+config BACKPORT_USERSEL_NET_SCH_FQ_CODEL
+	tristate "FQ codel"
+	depends on m
+	depends on m
+	depends on !BACKPORT_KERNEL_2_6_25
+	default m if NET_SCH_FQ_CODEL=n
+	default m if BACKPORT_USERSEL_BUILD_ALL
+
+config BACKPORT_BUILD_KFIFO
+	def_bool y
+	# RHEL6, starting from 6.1, backports kfifo already
+	depends on !BACKPORT_RHEL_KERNEL_6_1
+	depends on BACKPORT_KERNEL_2_6_36
+
+config BACKPORT_BUILD_CORDIC
+	tristate
+	depends on m
+	depends on !CORDIC
+	default m if BACKPORT_CORDIC
+	default m if BACKPORT_USERSEL_BUILD_ALL
+
+config BACKPORT_CORDIC
+	bool
+
+config BACKPORT_BUILD_CRC8
+	tristate
+	depends on m
+	depends on !CRC8
+	default m if BACKPORT_CRC8
+	default m if BACKPORT_USERSEL_BUILD_ALL
+
+config BACKPORT_CRC8
+	bool
+
+config BACKPORT_BUILD_GENERIC_ATOMIC64
+	bool
+	default y if !64BIT && !GENERIC_ATOMIC64
+
+config BACKPORT_OPTION_BT_SOCK_CREATE_NEEDS_KERN
+	bool
+	# in RHEL6 (starting from 6.0), the function needs the argument
+	default y if !BACKPORT_KERNEL_2_6_33 || BACKPORT_RHEL_KERNEL_6_0
+
+config BACKPORT_BUILD_AVERAGE
+	bool
+	depends on !AVERAGE
+	default y if BACKPORT_USERSEL_BUILD_ALL
+	default y if BACKPORT_AVERAGE
+	#h-file linux/average.h
+	#c-file lib/average.c
+
+config BACKPORT_AVERAGE
+	bool
+
+config BACKPORT_OPTION_USB_URB_THREAD_FIX
+	bool
+	default y if BACKPORT_KERNEL_2_6_36
+
+config BACKPORT_MII
+	bool
+
+config BACKPORT_BUILD_DMA_SHARED_BUFFER
+	bool
+	depends on ANON_INODES
+	depends on !BACKPORT_KERNEL_3_0
+	depends on !DMA_SHARED_BUFFER || BACKPORT_KERNEL_3_5
+	default y if BACKPORT_DMA_SHARED_BUFFER
+	default y if BACKPORT_USERSEL_BUILD_ALL
+	#h-file linux/dma-buf.h
+	#c-file drivers/base/dma-buf.c
+
+config BACKPORT_DMA_SHARED_BUFFER
+	bool
+
+config BACKPORT_BUILD_HDMI
+	bool
+	# not possible on kernel < 3.0
+	depends on !BACKPORT_KERNEL_3_0
+	# don't build if base kernel has it, except on kernel < 3.9
+	depends on !HDMI || BACKPORT_KERNEL_3_9
+	# build for testing
+	default y if BACKPORT_USERSEL_BUILD_ALL
+	# build if a driver needs it
+	default y if BACKPORT_HDMI
+	#h-file linux/hdmi.h
+	#c-file drivers/video/hdmi.c
+
+config BACKPORT_HDMI
+	bool
+
+config BACKPORT_BUILD_DMA_SHARED_HELPERS
+	bool
+	depends on HAS_DMA
+	# Build on other kernels kernels < 3.9 if HAVE_GENERIC_DMA_COHERENT is
+	# not set. Kernels >= 3.8 have this if HAS_DMA is set.
+	depends on (!HAVE_GENERIC_DMA_COHERENT || BACKPORT_KERNEL_3_9)
+	# Always build if on 3.3 - 3.5
+	default y if (BACKPORT_KERNEL_3_4 || BACKPORT_KERNEL_3_5 || BACKPORT_KERNEL_3_6)
+	# build for testing
+	default y if BACKPORT_USERSEL_BUILD_ALL
+
+config BACKPORT_BUILD_LEDS
+	bool
+	depends on !NEW_LEDS || !LEDS_CLASS || !LEDS_TRIGGERS
+	default y if BACKPORT_NEW_LEDS
+	default y if BACKPORT_LEDS_CLASS
+	default y if BACKPORT_LEDS_TRIGGERS
+
+config BACKPORT_NEW_LEDS
+	bool
+
+config BACKPORT_LEDS_CLASS
+	bool
+
+config BACKPORT_LEDS_TRIGGERS
+	bool
+
+config BACKPORT_BUILD_RADIX_HELPERS
+	bool
+	# You have selected to build backported DRM drivers
+	# Build only if on < 3.4
+	depends on DRM && BACKPORT_KERNEL_3_4
+	default y if BACKPORT_USERSEL_BUILD_ALL
+
+config BACKPORT_USERSEL_BUILD_ALL
+	bool "Build all compat code"
+	help
+	  This option selects all the compat code options
+	  that would otherwise only be selected by drivers.
+
+	  It's only really useful for compat testing, so
+	  you probably shouldn't enable it.
diff --git a/compat/Makefile b/compat/Makefile
new file mode 100644
index 0000000..6fb633d
--- /dev/null
+++ b/compat/Makefile
@@ -0,0 +1,45 @@
+ccflags-y += -I$(src)
+obj-m += compat.o
+compat-y += main.o
+
+obj-$(CPTCFG_BACKPORT_BUILD_FW_LOADER) += compat_firmware_class.o
+
+obj-$(CPTCFG_BACKPORT_USERSEL_NET_SCH_CODEL) += sch_codel.o
+
+sch_fq_codel-y = sch_fq_codel_core.o flow_dissector.o
+obj-$(CPTCFG_BACKPORT_USERSEL_NET_SCH_FQ_CODEL) += sch_fq_codel.o
+
+obj-$(CPTCFG_BACKPORT_BUILD_CORDIC) += cordic.o
+obj-$(CPTCFG_BACKPORT_BUILD_CRC8) += crc8.o
+
+# Compat kernel compatibility code
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_25) += compat-2.6.25.o pm_qos_params.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_26) += compat-2.6.26.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_27) += compat-2.6.27.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_28) += compat-2.6.28.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_29) += compat-2.6.29.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_32) += compat-2.6.32.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_33) += compat-2.6.33.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_34) += compat-2.6.34.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_35) += compat-2.6.35.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_36) += compat-2.6.36.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_37) += compat-2.6.37.o
+compat-$(CPTCFG_BACKPORT_KERNEL_2_6_39) += compat-2.6.39.o kstrtox.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_0) += compat-3.0.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_1) += compat-3.1.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_3) += compat-3.3.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_4) += compat-3.4.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_5) += compat-3.5.o user_namespace.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_6) += compat-3.6.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_7) += compat-3.7.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_8) += compat-3.8.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_9) += compat-3.9.o
+compat-$(CPTCFG_BACKPORT_KERNEL_3_10) += backport-3.10.o
+
+compat-$(CPTCFG_BACKPORT_BUILD_KFIFO) += kfifo.o
+compat-$(CPTCFG_BACKPORT_BUILD_GENERIC_ATOMIC64) += compat_atomic.o
+compat-$(CPTCFG_BACKPORT_BUILD_DMA_SHARED_HELPERS) += dma-shared-helpers.o
+compat-$(CPTCFG_BACKPORT_BUILD_RADIX_HELPERS) += lib-radix-tree-helpers.o
+compat-$(CPTCFG_BACKPORT_BUILD_HDMI) += drivers-video-hdmi.o
+compat-$(CPTCFG_BACKPORT_BUILD_AVERAGE) += lib-average.o
+compat-$(CPTCFG_BACKPORT_BUILD_DMA_SHARED_BUFFER) += drivers-base-dma-buf.o
diff --git a/compat/backport-3.10.c b/compat/backport-3.10.c
new file mode 100644
index 0000000..b155092
--- /dev/null
+++ b/compat/backport-3.10.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2013  Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * Linux backport symbols for kernels 3.10.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/proc_fs.h>
+#include <linux/hid.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
+#include <linux/init.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/async.h>
+#include <linux/mutex.h>
+#include <linux/suspend.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/regulator/consumer.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)) */
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
+/**
+ * regulator_map_voltage_ascend - map_voltage() for ascendant voltage list
+ *
+ * @rdev: Regulator to operate on
+ * @min_uV: Lower bound for voltage
+ * @max_uV: Upper bound for voltage
+ *
+ * Drivers that have ascendant voltage list can use this as their
+ * map_voltage() operation.
+ */
+int regulator_map_voltage_ascend(struct regulator_dev *rdev,
+				 int min_uV, int max_uV)
+{
+	int i, ret;
+
+	for (i = 0; i < rdev->desc->n_voltages; i++) {
+		ret = rdev->desc->ops->list_voltage(rdev, i);
+		if (ret < 0)
+			continue;
+
+		if (ret > max_uV)
+			break;
+
+		if (ret >= min_uV && ret <= max_uV)
+			return i;
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(regulator_map_voltage_ascend);
+
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)) */
+
+void proc_set_size(struct proc_dir_entry *de, loff_t size)
+{
+	de->size = size;
+}
+EXPORT_SYMBOL_GPL(proc_set_size);
+
+void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid)
+{
+	de->uid = uid;
+	de->gid = gid;
+}
+EXPORT_SYMBOL_GPL(proc_set_user);
+
+/*
+ * Allocator for buffer that is going to be passed to hid_output_report()
+ */
+u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
+{
+	/*
+	 * 7 extra bytes are necessary to achieve proper functionality
+	 * of implement() working on 8 byte chunks
+	 */
+
+	int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
+
+	return kmalloc(len, flags);
+}
+EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
diff --git a/compat/backports.h b/compat/backports.h
new file mode 100644
index 0000000..b609058
--- /dev/null
+++ b/compat/backports.h
@@ -0,0 +1,14 @@
+#ifndef LINUX_BACKPORTS_PRIVATE_H
+#define LINUX_BACKPORTS_PRIVATE_H
+
+#include <linux/version.h>
+
+#ifdef CPTCFG_BACKPORT_BUILD_DMA_SHARED_BUFFER
+int __init dma_buf_init(void);
+void __exit dma_buf_deinit(void);
+#else
+static inline int __init dma_buf_init(void) { return 0; }
+static inline void __exit dma_buf_deinit(void) { }
+#endif
+
+#endif /* LINUX_BACKPORTS_PRIVATE_H */
diff --git a/compat/compat-2.6.25.c b/compat/compat-2.6.25.c
new file mode 100644
index 0000000..dfd489b
--- /dev/null
+++ b/compat/compat-2.6.25.c
@@ -0,0 +1,305 @@
+/*
+ * Copyright 2007-2012	Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.25.
+ */
+
+#include <linux/miscdevice.h>
+#include <linux/pci.h>
+
+/*
+ * The default behaviour of sg_alloc_table() is to use these kmalloc/kfree
+ * helpers.
+ */
+static struct scatterlist *sg_kmalloc(unsigned int nents, gfp_t gfp_mask)
+{
+	if (nents == SG_MAX_SINGLE_ALLOC) {
+		return (struct scatterlist *) __get_free_page(gfp_mask);
+	} else
+		return kmalloc(nents * sizeof(struct scatterlist), gfp_mask);
+}
+
+static void sg_kfree(struct scatterlist *sg, unsigned int nents)
+{
+	if (nents == SG_MAX_SINGLE_ALLOC)
+		free_page((unsigned long) sg);
+	else
+		kfree(sg);
+}
+
+
+/**
+ * __sg_free_table - Free a previously mapped sg table
+ * @table:	The sg table header to use
+ * @max_ents:	The maximum number of entries per single scatterlist
+ * @free_fn:	Free function
+ *
+ *  Description:
+ *    Free an sg table previously allocated and setup with
+ *    __sg_alloc_table().  The @max_ents value must be identical to
+ *    that previously used with __sg_alloc_table().
+ *
+ **/
+void __sg_free_table(struct sg_table *table, unsigned int max_ents,
+		     sg_free_fn *free_fn)
+{
+	struct scatterlist *sgl, *next;
+
+	if (unlikely(!table->sgl))
+		return;
+
+	sgl = table->sgl;
+	while (table->orig_nents) {
+		unsigned int alloc_size = table->orig_nents;
+		unsigned int sg_size;
+
+		/*
+		 * If we have more than max_ents segments left,
+		 * then assign 'next' to the sg table after the current one.
+		 * sg_size is then one less than alloc size, since the last
+		 * element is the chain pointer.
+		 */
+		if (alloc_size > max_ents) {
+			next = sg_chain_ptr(&sgl[max_ents - 1]);
+			alloc_size = max_ents;
+			sg_size = alloc_size - 1;
+		} else {
+			sg_size = alloc_size;
+			next = NULL;
+		}
+
+		table->orig_nents -= sg_size;
+		free_fn(sgl, alloc_size);
+		sgl = next;
+	}
+
+	table->sgl = NULL;
+}
+EXPORT_SYMBOL_GPL(__sg_free_table);
+
+/**
+ * sg_free_table - Free a previously allocated sg table
+ * @table:	The mapped sg table header
+ *
+ **/
+void sg_free_table(struct sg_table *table)
+{
+	__sg_free_table(table, SG_MAX_SINGLE_ALLOC, sg_kfree);
+}
+EXPORT_SYMBOL_GPL(sg_free_table);
+
+/**
+ * __sg_alloc_table - Allocate and initialize an sg table with given allocator
+ * @table:	The sg table header to use
+ * @nents:	Number of entries in sg list
+ * @max_ents:	The maximum number of entries the allocator returns per call
+ * @gfp_mask:	GFP allocation mask
+ * @alloc_fn:	Allocator to use
+ *
+ * Description:
+ *   This function returns a @table @nents long. The allocator is
+ *   defined to return scatterlist chunks of maximum size @max_ents.
+ *   Thus if @nents is bigger than @max_ents, the scatterlists will be
+ *   chained in units of @max_ents.
+ *
+ * Notes:
+ *   If this function returns non-0 (eg failure), the caller must call
+ *   __sg_free_table() to cleanup any leftover allocations.
+ *
+ **/
+int __sg_alloc_table(struct sg_table *table, unsigned int nents,
+		     unsigned int max_ents, gfp_t gfp_mask,
+		     sg_alloc_fn *alloc_fn)
+{
+	struct scatterlist *sg, *prv;
+	unsigned int left;
+
+#ifndef ARCH_HAS_SG_CHAIN
+	if (WARN_ON_ONCE(nents > max_ents))
+		return -EINVAL;
+#endif
+
+	memset(table, 0, sizeof(*table));
+
+	left = nents;
+	prv = NULL;
+	do {
+		unsigned int sg_size, alloc_size = left;
+
+		if (alloc_size > max_ents) {
+			alloc_size = max_ents;
+			sg_size = alloc_size - 1;
+		} else
+			sg_size = alloc_size;
+
+		left -= sg_size;
+
+		sg = alloc_fn(alloc_size, gfp_mask);
+		if (unlikely(!sg)) {
+			/*
+			 * Adjust entry count to reflect that the last
+			 * entry of the previous table won't be used for
+			 * linkage.  Without this, sg_kfree() may get
+			 * confused.
+			 */
+			if (prv)
+				table->nents = ++table->orig_nents;
+
+ 			return -ENOMEM;
+		}
+
+		sg_init_table(sg, alloc_size);
+		table->nents = table->orig_nents += sg_size;
+
+		/*
+		 * If this is the first mapping, assign the sg table header.
+		 * If this is not the first mapping, chain previous part.
+		 */
+		if (prv)
+			sg_chain(prv, max_ents, sg);
+		else
+			table->sgl = sg;
+
+		/*
+		 * If no more entries after this one, mark the end
+		 */
+		if (!left)
+			sg_mark_end(&sg[sg_size - 1]);
+
+		prv = sg;
+	} while (left);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(__sg_alloc_table);
+
+/**
+ * sg_alloc_table - Allocate and initialize an sg table
+ * @table:	The sg table header to use
+ * @nents:	Number of entries in sg list
+ * @gfp_mask:	GFP allocation mask
+ *
+ *  Description:
+ *    Allocate and initialize an sg table. If @nents@ is larger than
+ *    SG_MAX_SINGLE_ALLOC a chained sg table will be setup.
+ *
+ **/
+int sg_alloc_table(struct sg_table *table, unsigned int nents, gfp_t gfp_mask)
+{
+	int ret;
+
+	ret = __sg_alloc_table(table, nents, SG_MAX_SINGLE_ALLOC,
+			       gfp_mask, sg_kmalloc);
+	if (unlikely(ret))
+		__sg_free_table(table, SG_MAX_SINGLE_ALLOC, sg_kfree);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(sg_alloc_table);
+
+
+/*
+ * To backport b718989d correctly pcibios_enable_device()
+ * is required but we don't have access to it on modules
+ * as its an architecture specific routine that is not
+ * exported and as such only core kernel code has access
+ * to it. We implement a sloppy work around for backporting
+ * this.
+ */
+int pci_enable_device_mem(struct pci_dev *dev)
+{
+	int bars = pci_select_bars(dev, IORESOURCE_MEM);
+
+	return pci_enable_device_bars(dev, bars);
+}
+EXPORT_SYMBOL_GPL(pci_enable_device_mem);
+
+/**
+ * The following things are out of ./lib/vsprintf.c
+ * The new iwlwifi driver is using them.
+ */
+
+/**
+ * strict_strtoul - convert a string to an unsigned long strictly
+ * @cp: The string to be converted
+ * @base: The number base to use
+ * @res: The converted result value
+ *
+ * strict_strtoul converts a string to an unsigned long only if the
+ * string is really an unsigned long string, any string containing
+ * any invalid char at the tail will be rejected and -EINVAL is returned,
+ * only a newline char at the tail is acceptible because people generally
+ * change a module parameter in the following way:
+ *
+ * 	echo 1024 > /sys/module/e1000/parameters/copybreak
+ *
+ * echo will append a newline to the tail.
+ *
+ * It returns 0 if conversion is successful and *res is set to the converted
+ * value, otherwise it returns -EINVAL and *res is set to 0.
+ *
+ * simple_strtoul just ignores the successive invalid characters and
+ * return the converted value of prefix part of the string.
+ */
+int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
+
+/**
+ * strict_strtol - convert a string to a long strictly
+ * @cp: The string to be converted
+ * @base: The number base to use
+ * @res: The converted result value
+ *
+ * strict_strtol is similiar to strict_strtoul, but it allows the first
+ * character of a string is '-'.
+ *
+ * It returns 0 if conversion is successful and *res is set to the converted
+ * value, otherwise it returns -EINVAL and *res is set to 0.
+ */
+int strict_strtol(const char *cp, unsigned int base, long *res);
+
+#define define_strict_strtoux(type, valtype)				\
+int strict_strtou##type(const char *cp, unsigned int base, valtype *res)\
+{									\
+	char *tail;							\
+	valtype val;							\
+	size_t len;							\
+									\
+	*res = 0;							\
+	len = strlen(cp);						\
+	if (len == 0)							\
+		return -EINVAL;						\
+									\
+	val = simple_strtou##type(cp, &tail, base);			\
+	if ((*tail == '\0') ||						\
+		((len == (size_t)(tail - cp) + 1) && (*tail == '\n'))) {\
+		*res = val;						\
+		return 0;						\
+	}								\
+									\
+	return -EINVAL;							\
+}									\
+
+#define define_strict_strtox(type, valtype)				\
+int strict_strto##type(const char *cp, unsigned int base, valtype *res)	\
+{									\
+	int ret;							\
+	if (*cp == '-') {						\
+		ret = strict_strtou##type(cp+1, base, res);		\
+		if (!ret)						\
+			*res = -(*res);					\
+	} else								\
+		ret = strict_strtou##type(cp, base, res);		\
+									\
+	return ret;							\
+}									\
+
+define_strict_strtoux(l, unsigned long)
+define_strict_strtox(l, long)
+
+EXPORT_SYMBOL_GPL(strict_strtoul);
+EXPORT_SYMBOL_GPL(strict_strtol);
+
diff --git a/compat/compat-2.6.26.c b/compat/compat-2.6.26.c
new file mode 100644
index 0000000..823e9a5
--- /dev/null
+++ b/compat/compat-2.6.26.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2007-2010	Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.26.
+ *
+ * Copyright holders from ported work:
+ *
+ * Copyright (c) 2002-2003 Patrick Mochel <mochel@osdl.org>
+ * Copyright (c) 2006-2007 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (c) 2006-2007 Novell Inc.
+ */
+#include <linux/device.h>
+#include <net/sock.h>
+#include <net/compat.h>
+
+const char hex_asc[] = "0123456789abcdef";
+EXPORT_SYMBOL_GPL(hex_asc);
+
+/* 2.6.24 does not have the struct kobject with a name */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25))
+
+/**
+ * kobject_set_name_vargs - Set the name of an kobject
+ * @kobj: struct kobject to set the name of
+ * @fmt: format string used to build the name
+ * @vargs: vargs to format the string.
+ */
+static
+int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
+				  va_list vargs)
+{
+	const char *old_name = kobj->name;
+	char *s;
+
+	if (kobj->name && !fmt)
+		return 0;
+
+	kobj->name = kvasprintf(GFP_KERNEL, fmt, vargs);
+	if (!kobj->name)
+		return -ENOMEM;
+
+	/* ewww... some of these buggers have '/' in the name ... */
+	while ((s = strchr(kobj->name, '/')))
+		s[0] = '!';
+
+	kfree(old_name);
+	return 0;
+}
+#else
+static
+int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
+				  va_list vargs)
+{
+	struct device *dev;
+	unsigned int len;
+	va_list aq;
+
+	dev = container_of(kobj, struct device, kobj);
+
+	va_copy(aq, vargs);
+	len = vsnprintf(NULL, 0, fmt, aq);
+	va_end(aq);
+
+	len = len < BUS_ID_SIZE ? (len + 1) : BUS_ID_SIZE;
+
+	vsnprintf(dev->bus_id, len, fmt, vargs);
+	return 0;
+}
+#endif
+
+/**
+ * dev_set_name - set a device name
+ * @dev: device
+ * @fmt: format string for the device's name
+ */
+int dev_set_name(struct device *dev, const char *fmt, ...)
+{
+	va_list vargs;
+	int err;
+
+	va_start(vargs, fmt);
+	err = kobject_set_name_vargs(&dev->kobj, fmt, vargs);
+	va_end(vargs);
+	return err;
+}
+EXPORT_SYMBOL_GPL(dev_set_name);
+
diff --git a/compat/compat-2.6.27.c b/compat/compat-2.6.27.c
new file mode 100644
index 0000000..0146263
--- /dev/null
+++ b/compat/compat-2.6.27.c
@@ -0,0 +1,241 @@
+/*
+ * Copyright 2007	Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.27
+ */
+#include <linux/debugfs.h>
+#include <linux/compat.h>
+#include <linux/pci.h>
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24))
+#include <linux/mmc/sdio.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
+#endif
+
+/* rfkill notification chain */
+#define RFKILL_STATE_CHANGED            0x0001  /* state of a normal rfkill
+							switch has changed */
+
+/*
+ * e5899e1b7d73e67de758a32174a859cc2586c0b9 made pci_pme_capable() external,
+ * it was defined internally, some drivers want access to this information.
+ *
+ * Unfortunately the old kernels do not have ->pm_cap or ->pme_support so
+ * we have to call the PCI routines directly.
+ */
+
+#ifdef CONFIG_PCI
+/**
+ * pci_pme_capable - check the capability of PCI device to generate PME#
+ * @dev: PCI device to handle.
+ * @state: PCI state from which device will issue PME#.
+ *
+ * This is the backport code for older kernels for compat-drivers, we read stuff
+ * from the initialization stuff from pci_pm_init().
+ */
+bool pci_pme_capable(struct pci_dev *dev, pci_power_t state)
+{
+	int pm;
+	u16 pmc = 0;
+	u16 pme_support; /* as from the pci dev */
+	/* find PCI PM capability in list */
+	pm = pci_find_capability(dev, PCI_CAP_ID_PM);
+	if (!pm)
+		return false;
+
+        if ((pmc & PCI_PM_CAP_VER_MASK) > 3) {
+		dev_err(&dev->dev, "unsupported PM cap regs version (%u)\n",
+			pmc & PCI_PM_CAP_VER_MASK);
+		return false;
+        }
+
+	pmc &= PCI_PM_CAP_PME_MASK;
+
+	if (!pmc)
+		return false;
+
+	pme_support = pmc >> PCI_PM_CAP_PME_SHIFT;
+
+	/* Check device's ability to generate PME# */
+
+	return !!(pme_support & (1 << state));
+}
+EXPORT_SYMBOL_GPL(pci_pme_capable);
+#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24))
+/**
+ *	mmc_align_data_size - pads a transfer size to a more optimal value
+ *	@card: the MMC card associated with the data transfer
+ *	@sz: original transfer size
+ *
+ *	Pads the original data size with a number of extra bytes in
+ *	order to avoid controller bugs and/or performance hits
+ *	(e.g. some controllers revert to PIO for certain sizes).
+ *
+ *	Returns the improved size, which might be unmodified.
+ *
+ *	Note that this function is only relevant when issuing a
+ *	single scatter gather entry.
+ */
+unsigned int mmc_align_data_size(struct mmc_card *card, unsigned int sz)
+{
+	/*
+	* FIXME: We don't have a system for the controller to tell
+	* the core about its problems yet, so for now we just 32-bit
+	* align the size.
+	*/
+	sz = ((sz + 3) / 4) * 4;
+
+	return sz;
+}
+EXPORT_SYMBOL_GPL(mmc_align_data_size);
+
+/*
+ * Calculate the maximum byte mode transfer size
+ */
+static inline unsigned int sdio_max_byte_size(struct sdio_func *func)
+{
+	unsigned int mval = (unsigned int) min(func->card->host->max_seg_size,
+			    func->card->host->max_blk_size);
+	mval = min(mval, func->max_blksize);
+	return min(mval, 512u); /* maximum size for byte mode */
+}
+
+/**
+ *	sdio_align_size - pads a transfer size to a more optimal value
+ *	@func: SDIO function
+ *	@sz: original transfer size
+ *
+ *	Pads the original data size with a number of extra bytes in
+ *	order to avoid controller bugs and/or performance hits
+ *	(e.g. some controllers revert to PIO for certain sizes).
+ *
+ *	If possible, it will also adjust the size so that it can be
+ *	handled in just a single request.
+ *
+ *	Returns the improved size, which might be unmodified.
+ */
+unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz)
+{
+	unsigned int orig_sz;
+	unsigned int blk_sz, byte_sz;
+	unsigned chunk_sz;
+
+	orig_sz = sz;
+
+	/*
+	 * Do a first check with the controller, in case it
+	 * wants to increase the size up to a point where it
+	 * might need more than one block.
+	 */
+	sz = mmc_align_data_size(func->card, sz);
+
+	/*
+	 * If we can still do this with just a byte transfer, then
+	 * we're done.
+	 */
+	if (sz <= sdio_max_byte_size(func))
+		return sz;
+
+	if (func->card->cccr.multi_block) {
+		/*
+		 * Check if the transfer is already block aligned
+		 */
+		if ((sz % func->cur_blksize) == 0)
+			return sz;
+
+		/*
+		 * Realign it so that it can be done with one request,
+		 * and recheck if the controller still likes it.
+		 */
+		blk_sz = ((sz + func->cur_blksize - 1) /
+			func->cur_blksize) * func->cur_blksize;
+		blk_sz = mmc_align_data_size(func->card, blk_sz);
+
+		/*
+		 * This value is only good if it is still just
+		 * one request.
+		 */
+		if ((blk_sz % func->cur_blksize) == 0)
+			return blk_sz;
+
+		/*
+		 * We failed to do one request, but at least try to
+		 * pad the remainder properly.
+		 */
+		byte_sz = mmc_align_data_size(func->card,
+				sz % func->cur_blksize);
+		if (byte_sz <= sdio_max_byte_size(func)) {
+			blk_sz = sz / func->cur_blksize;
+			return blk_sz * func->cur_blksize + byte_sz;
+		}
+	} else {
+		/*
+		 * We need multiple requests, so first check that the
+		 * controller can handle the chunk size;
+		 */
+		chunk_sz = mmc_align_data_size(func->card,
+				sdio_max_byte_size(func));
+		if (chunk_sz == sdio_max_byte_size(func)) {
+			/*
+			 * Fix up the size of the remainder (if any)
+			 */
+			byte_sz = orig_sz % chunk_sz;
+			if (byte_sz) {
+				byte_sz = mmc_align_data_size(func->card,
+						byte_sz);
+			}
+
+			return (orig_sz / chunk_sz) * chunk_sz + byte_sz;
+		}
+	}
+
+	/*
+	 * The controller is simply incapable of transferring the size
+	 * we want in decent manner, so just return the original size.
+	 */
+	return orig_sz;
+}
+EXPORT_SYMBOL_GPL(sdio_align_size);
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24) */
+
+#ifdef CONFIG_DEBUG_FS
+/*
+ * Backport of debugfs_remove_recursive() without using the internals globals
+ * which are used by the kernel's version with:
+ * simple_release_fs(&debugfs_mount, &debugfs_mount_count);
+ */
+void debugfs_remove_recursive(struct dentry *dentry)
+{
+	struct dentry *last = NULL;
+
+	/* Sanity checks */
+	if (!dentry || !dentry->d_parent || !dentry->d_parent->d_inode)
+		return;
+
+	while (dentry != last) {
+		struct dentry *child = dentry;
+
+		/* Find a child without children */
+		while (!list_empty(&child->d_subdirs))
+			child = list_entry(child->d_subdirs.next,
+					   struct dentry,
+					   d_u.d_child);
+
+		/* Bail out if we already tried to remove that entry */
+		if (child == last)
+			return;
+
+		last = child;
+		debugfs_remove(child);
+	}
+}
+EXPORT_SYMBOL_GPL(debugfs_remove_recursive);
+#endif /* CONFIG_DEBUG_FS */
+
diff --git a/compat/compat-2.6.28.c b/compat/compat-2.6.28.c
new file mode 100644
index 0000000..731ae04
--- /dev/null
+++ b/compat/compat-2.6.28.c
@@ -0,0 +1,469 @@
+/*
+ * Copyright 2007	Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.28.
+ */
+
+#include <linux/compat.h>
+#include <linux/usb.h>
+#include <linux/tty.h>
+#include <linux/skbuff.h>
+#include <asm/poll.h>
+
+/* 2.6.28 compat code goes here */
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23))
+#if defined(CONFIG_USB) || defined(CONFIG_USB_MODULE)
+/*
+ * Compat-wireless notes for USB backport stuff:
+ *
+ * urb->reject exists on 2.6.27, the poison/unpoison helpers
+ * did not though. The anchor poison does not exist so we cannot use them.
+ *
+ * USB anchor poising seems to exist to prevent future driver sumbissions
+ * of usb_anchor_urb() to an anchor marked as poisoned. For older kernels
+ * we cannot use that, so new usb_anchor_urb()s will be anchored. The down
+ * side to this should be submission of URBs will continue being anchored
+ * on an anchor instead of having them being rejected immediately when the
+ * driver realized we needed to stop. For ar9170 we poison URBs upon the
+ * ar9170 mac80211 stop callback(), don't think this should be so bad.
+ * It mean there is period of time in older kernels for which we continue
+ * to anchor new URBs to a known stopped anchor. We have two anchors
+ * (TX, and RX)
+ */
+
+#if 0
+/**
+ * usb_poison_urb - reliably kill a transfer and prevent further use of an URB
+ * @urb: pointer to URB describing a previously submitted request,
+ *	may be NULL
+ *
+ * This routine cancels an in-progress request.  It is guaranteed that
+ * upon return all completion handlers will have finished and the URB
+ * will be totally idle and cannot be reused.  These features make
+ * this an ideal way to stop I/O in a disconnect() callback.
+ * If the request has not already finished or been unlinked
+ * the completion handler will see urb->status == -ENOENT.
+ *
+ * After and while the routine runs, attempts to resubmit the URB will fail
+ * with error -EPERM.  Thus even if the URB's completion handler always
+ * tries to resubmit, it will not succeed and the URB will become idle.
+ *
+ * This routine may not be used in an interrupt context (such as a bottom
+ * half or a completion handler), or when holding a spinlock, or in other
+ * situations where the caller can't schedule().
+ *
+ * This routine should not be called by a driver after its disconnect
+ * method has returned.
+ */
+void usb_poison_urb(struct urb *urb)
+{
+	might_sleep();
+	if (!(urb && urb->dev && urb->ep))
+		return;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+	spin_lock_irq(&usb_reject_lock);
+#endif
+	++urb->reject;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+	spin_unlock_irq(&usb_reject_lock);
+#endif
+	/*
+	 * XXX: usb_hcd_unlink_urb() needs backporting... this is defined
+	 * on usb hcd.c but urb.c gets access to it. That is, older kernels
+	 * have usb_hcd_unlink_urb() but its not exported, nor can we
+	 * re-implement it exactly. This essentially dequeues the urb from
+	 * hw, we need to figure out a way to backport this.
+	 */
+	//usb_hcd_unlink_urb(urb, -ENOENT);
+
+	wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0);
+}
+EXPORT_SYMBOL_GPL(usb_poison_urb);
+#endif
+#endif /* CONFIG_USB */
+
+#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/ds.h>
+struct pcmcia_cfg_mem {
+	tuple_t tuple;
+	cisparse_t parse;
+	u8 buf[256];
+	cistpl_cftable_entry_t dflt;
+};
+/**
+ * pcmcia_loop_config() - loop over configuration options
+ * @p_dev:	the struct pcmcia_device which we need to loop for.
+ * @conf_check:	function to call for each configuration option.
+ *		It gets passed the struct pcmcia_device, the CIS data
+ *		describing the configuration option, and private data
+ *		being passed to pcmcia_loop_config()
+ * @priv_data:	private data to be passed to the conf_check function.
+ *
+ * pcmcia_loop_config() loops over all configuration options, and calls
+ * the driver-specific conf_check() for each one, checking whether
+ * it is a valid one. Returns 0 on success or errorcode otherwise.
+ */
+int pcmcia_loop_config(struct pcmcia_device *p_dev,
+		       int	(*conf_check)	(struct pcmcia_device *p_dev,
+						 cistpl_cftable_entry_t *cfg,
+						 cistpl_cftable_entry_t *dflt,
+						 unsigned int vcc,
+						 void *priv_data),
+		       void *priv_data)
+{
+	struct pcmcia_cfg_mem *cfg_mem;
+
+	tuple_t *tuple;
+	int ret;
+	unsigned int vcc;
+
+	cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
+	if (cfg_mem == NULL)
+		return -ENOMEM;
+
+	/* get the current Vcc setting */
+	vcc = p_dev->socket->socket.Vcc;
+
+	tuple = &cfg_mem->tuple;
+	tuple->TupleData = cfg_mem->buf;
+	tuple->TupleDataMax = 255;
+	tuple->TupleOffset = 0;
+	tuple->DesiredTuple = CISTPL_CFTABLE_ENTRY;
+	tuple->Attributes = 0;
+
+	ret = pcmcia_get_first_tuple(p_dev, tuple);
+	while (!ret) {
+		cistpl_cftable_entry_t *cfg = &cfg_mem->parse.cftable_entry;
+
+		if (pcmcia_get_tuple_data(p_dev, tuple))
+			goto next_entry;
+
+		if (pcmcia_parse_tuple(tuple, &cfg_mem->parse))
+			goto next_entry;
+
+		/* default values */
+		p_dev->conf.ConfigIndex = cfg->index;
+		if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
+			cfg_mem->dflt = *cfg;
+
+		ret = conf_check(p_dev, cfg, &cfg_mem->dflt, vcc, priv_data);
+		if (!ret)
+			break;
+
+next_entry:
+		ret = pcmcia_get_next_tuple(p_dev, tuple);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(pcmcia_loop_config);
+
+#endif /* CONFIG_PCMCIA */
+
+#if defined(CONFIG_USB) || defined(CONFIG_USB_MODULE)
+
+void usb_unpoison_urb(struct urb *urb)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+	unsigned long flags;
+#endif
+
+	if (!urb)
+		return;
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+	spin_lock_irqsave(&usb_reject_lock, flags);
+#endif
+	--urb->reject;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+	spin_unlock_irqrestore(&usb_reject_lock, flags);
+#endif
+}
+EXPORT_SYMBOL_GPL(usb_unpoison_urb);
+
+
+#if 0
+/**
+ * usb_poison_anchored_urbs - cease all traffic from an anchor
+ * @anchor: anchor the requests are bound to
+ *
+ * this allows all outstanding URBs to be poisoned starting
+ * from the back of the queue. Newly added URBs will also be
+ * poisoned
+ *
+ * This routine should not be called by a driver after its disconnect
+ * method has returned.
+ */
+void usb_poison_anchored_urbs(struct usb_anchor *anchor)
+{
+	struct urb *victim;
+
+	spin_lock_irq(&anchor->lock);
+	// anchor->poisoned = 1; /* XXX: Cannot backport */
+	while (!list_empty(&anchor->urb_list)) {
+		victim = list_entry(anchor->urb_list.prev, struct urb,
+				    anchor_list);
+		/* we must make sure the URB isn't freed before we kill it*/
+		usb_get_urb(victim);
+		spin_unlock_irq(&anchor->lock);
+		/* this will unanchor the URB */
+		usb_poison_urb(victim);
+		usb_put_urb(victim);
+		spin_lock_irq(&anchor->lock);
+	}
+	spin_unlock_irq(&anchor->lock);
+}
+EXPORT_SYMBOL_GPL(usb_poison_anchored_urbs);
+#endif
+
+/**
+ * usb_anchor_empty - is an anchor empty
+ * @anchor: the anchor you want to query
+ *
+ * returns 1 if the anchor has no urbs associated with it
+ */
+int usb_anchor_empty(struct usb_anchor *anchor)
+{
+	return list_empty(&anchor->urb_list);
+}
+
+EXPORT_SYMBOL_GPL(usb_anchor_empty);
+#endif /* CONFIG_USB */
+#endif
+
+#ifdef CONFIG_PCI
+void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar)
+{
+	/*
+	 * Make sure the BAR is actually a memory resource, not an IO resource
+	 */
+	if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
+		WARN_ON(1);
+		return NULL;
+	}
+	return ioremap_nocache(pci_resource_start(pdev, bar),
+				     pci_resource_len(pdev, bar));
+}
+EXPORT_SYMBOL_GPL(pci_ioremap_bar);
+#endif
+
+static unsigned long round_jiffies_common(unsigned long j, int cpu,
+		bool force_up)
+{
+	int rem;
+	unsigned long original = j;
+
+	/*
+	 * We don't want all cpus firing their timers at once hitting the
+	 * same lock or cachelines, so we skew each extra cpu with an extra
+	 * 3 jiffies. This 3 jiffies came originally from the mm/ code which
+	 * already did this.
+	 * The skew is done by adding 3*cpunr, then round, then subtract this
+	 * extra offset again.
+	 */
+	j += cpu * 3;
+
+	rem = j % HZ;
+
+	/*
+	 * If the target jiffie is just after a whole second (which can happen
+	 * due to delays of the timer irq, long irq off times etc etc) then
+	 * we should round down to the whole second, not up. Use 1/4th second
+	 * as cutoff for this rounding as an extreme upper bound for this.
+	 * But never round down if @force_up is set.
+	 */
+	if (rem < HZ/4 && !force_up) /* round down */
+		j = j - rem;
+	else /* round up */
+		j = j - rem + HZ;
+
+	/* now that we have rounded, subtract the extra skew again */
+	j -= cpu * 3;
+
+	if (j <= jiffies) /* rounding ate our timeout entirely; */
+		return original;
+	return j;
+}
+
+/**
+ * round_jiffies_up - function to round jiffies up to a full second
+ * @j: the time in (absolute) jiffies that should be rounded
+ *
+ * This is the same as round_jiffies() except that it will never
+ * round down.  This is useful for timeouts for which the exact time
+ * of firing does not matter too much, as long as they don't fire too
+ * early.
+ */
+unsigned long round_jiffies_up(unsigned long j)
+{
+	return round_jiffies_common(j, raw_smp_processor_id(), true);
+}
+EXPORT_SYMBOL_GPL(round_jiffies_up);
+
+void v2_6_28_skb_add_rx_frag(struct sk_buff *skb, int i, struct page *page, int off,
+		int size)
+{
+	skb_fill_page_desc(skb, i, page, off, size);
+	skb->len += size;
+	skb->data_len += size;
+	skb->truesize += size;
+}
+EXPORT_SYMBOL_GPL(v2_6_28_skb_add_rx_frag);
+
+void tty_write_unlock(struct tty_struct *tty)
+{
+	mutex_unlock(&tty->atomic_write_lock);
+	wake_up_interruptible_poll(&tty->write_wait, POLLOUT);
+}
+
+int tty_write_lock(struct tty_struct *tty, int ndelay)
+{
+	if (!mutex_trylock(&tty->atomic_write_lock)) {
+		if (ndelay)
+			return -EAGAIN;
+		if (mutex_lock_interruptible(&tty->atomic_write_lock))
+			return -ERESTARTSYS;
+	}
+	return 0;
+}
+
+/**
+ *	send_prio_char		-	send priority character
+ *
+ *	Send a high priority character to the tty even if stopped
+ *
+ *	Locking: none for xchar method, write ordering for write method.
+ */
+
+static int send_prio_char(struct tty_struct *tty, char ch)
+{
+	int	was_stopped = tty->stopped;
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26))
+	if (tty->ops->send_xchar) {
+		tty->ops->send_xchar(tty, ch);
+#else
+	if (tty->driver->send_xchar) {
+		tty->driver->send_xchar(tty, ch);
+#endif
+		return 0;
+	}
+
+	if (tty_write_lock(tty, 0) < 0)
+		return -ERESTARTSYS;
+
+	if (was_stopped)
+		start_tty(tty);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26))
+	tty->ops->write(tty, &ch, 1);
+#else
+	tty->driver->write(tty, &ch, 1);
+#endif
+	if (was_stopped)
+		stop_tty(tty);
+	tty_write_unlock(tty);
+	return 0;
+}
+
+int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
+		       unsigned int cmd, unsigned long arg)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26))
+	unsigned long flags;
+#endif
+	int retval;
+
+	switch (cmd) {
+	case TCXONC:
+		retval = tty_check_change(tty);
+		if (retval)
+			return retval;
+		switch (arg) {
+		case TCOOFF:
+			if (!tty->flow_stopped) {
+				tty->flow_stopped = 1;
+				stop_tty(tty);
+			}
+			break;
+		case TCOON:
+			if (tty->flow_stopped) {
+				tty->flow_stopped = 0;
+				start_tty(tty);
+			}
+			break;
+		case TCIOFF:
+			if (STOP_CHAR(tty) != __DISABLED_CHAR)
+				return send_prio_char(tty, STOP_CHAR(tty));
+			break;
+		case TCION:
+			if (START_CHAR(tty) != __DISABLED_CHAR)
+				return send_prio_char(tty, START_CHAR(tty));
+			break;
+		default:
+			return -EINVAL;
+		}
+		return 0;
+	case TCFLSH:
+		return tty_perform_flush(tty, arg);
+	case TIOCPKT:
+	{
+		int pktmode;
+
+		if (tty->driver->type != TTY_DRIVER_TYPE_PTY ||
+		    tty->driver->subtype != PTY_TYPE_MASTER)
+			return -ENOTTY;
+		if (get_user(pktmode, (int __user *) arg))
+			return -EFAULT;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26))
+		spin_lock_irqsave(&tty->ctrl_lock, flags);
+#endif
+		if (pktmode) {
+			if (!tty->packet) {
+				tty->packet = 1;
+				tty->link->ctrl_status = 0;
+			}
+		} else
+			tty->packet = 0;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26))
+		spin_unlock_irqrestore(&tty->ctrl_lock, flags);
+#endif
+		return 0;
+	}
+	default:
+		/* Try the mode commands */
+		return tty_mode_ioctl(tty, file, cmd, arg);
+	}
+}
+EXPORT_SYMBOL_GPL(n_tty_ioctl_helper);
+
+#ifdef CONFIG_PCI
+/**
+ * pci_wake_from_d3 - enable/disable device to wake up from D3_hot or D3_cold
+ * @dev: PCI device to prepare
+ * @enable: True to enable wake-up event generation; false to disable
+ *
+ * Many drivers want the device to wake up the system from D3_hot or D3_cold
+ * and this function allows them to set that up cleanly - pci_enable_wake()
+ * should not be called twice in a row to enable wake-up due to PCI PM vs ACPI
+ * ordering constraints.
+ *
+ * This function only returns error code if the device is not capable of
+ * generating PME# from both D3_hot and D3_cold, and the platform is unable to
+ * enable wake-up power for it.
+ */
+int pci_wake_from_d3(struct pci_dev *dev, bool enable)
+{
+	return pci_pme_capable(dev, PCI_D3cold) ?
+			pci_enable_wake(dev, PCI_D3cold, enable) :
+			pci_enable_wake(dev, PCI_D3hot, enable);
+}
+EXPORT_SYMBOL_GPL(pci_wake_from_d3);
+#endif
+
diff --git a/compat/compat-2.6.29.c b/compat/compat-2.6.29.c
new file mode 100644
index 0000000..1beb718
--- /dev/null
+++ b/compat/compat-2.6.29.c
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2007-2010	Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.29.
+ */
+
+#include <linux/compat.h>
+#include <linux/usb.h>
+#include <linux/etherdevice.h>
+
+/*
+ * If you don't see your net_device_ops implemented on
+ * netdev_attach_ops() then you are shit out of luck and
+ * you must do the nasty ifdef magic, unless you figure
+ * out a way to squeze your hacks into this routine :)
+ */
+void netdev_attach_ops(struct net_device *dev,
+		       const struct net_device_ops *ops)
+{
+	dev->open = ops->ndo_open;
+	dev->init = ops->ndo_init;
+	dev->stop = ops->ndo_stop;
+	dev->hard_start_xmit = ops->ndo_start_xmit;
+	dev->change_rx_flags = ops->ndo_change_rx_flags;
+	dev->set_multicast_list = ops->ndo_set_multicast_list;
+	dev->validate_addr = ops->ndo_validate_addr;
+	dev->do_ioctl = ops->ndo_do_ioctl;
+	dev->set_config = ops->ndo_set_config;
+	dev->change_mtu = ops->ndo_change_mtu;
+	dev->set_mac_address = ops->ndo_set_mac_address;
+	dev->tx_timeout = ops->ndo_tx_timeout;
+	if (ops->ndo_get_stats)
+		dev->get_stats = ops->ndo_get_stats;
+	dev->vlan_rx_register = ops->ndo_vlan_rx_register;
+	dev->vlan_rx_add_vid = ops->ndo_vlan_rx_add_vid;
+	dev->vlan_rx_kill_vid = ops->ndo_vlan_rx_kill_vid;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = ops->ndo_poll_controller;
+#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27))
+	dev->select_queue = ops->ndo_select_queue;
+#endif
+}
+EXPORT_SYMBOL_GPL(netdev_attach_ops);
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23))
+#if defined(CONFIG_USB) || defined(CONFIG_USB_MODULE)
+/**
+ * usb_unpoison_anchored_urbs - let an anchor be used successfully again
+ * @anchor: anchor the requests are bound to
+ *
+ * Reverses the effect of usb_poison_anchored_urbs
+ * the anchor can be used normally after it returns
+ */
+void usb_unpoison_anchored_urbs(struct usb_anchor *anchor)
+{
+	unsigned long flags;
+	struct urb *lazarus;
+
+	spin_lock_irqsave(&anchor->lock, flags);
+	list_for_each_entry(lazarus, &anchor->urb_list, anchor_list) {
+		usb_unpoison_urb(lazarus);
+	}
+	//anchor->poisoned = 0; /* XXX: cannot backport */
+	spin_unlock_irqrestore(&anchor->lock, flags);
+}
+EXPORT_SYMBOL_GPL(usb_unpoison_anchored_urbs);
+#endif /* CONFIG_USB */
+#endif
+
+/**
+ * eth_mac_addr - set new Ethernet hardware address
+ * @dev: network device
+ * @p: socket address
+ * Change hardware address of device.
+ *
+ * This doesn't change hardware matching, so needs to be overridden
+ * for most real devices.
+ */
+int eth_mac_addr(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+
+	if (netif_running(dev))
+		return -EBUSY;
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(eth_mac_addr);
+
+/**
+ * eth_change_mtu - set new MTU size
+ * @dev: network device
+ * @new_mtu: new Maximum Transfer Unit
+ *
+ * Allow changing MTU size. Needs to be overridden for devices
+ * supporting jumbo frames.
+ */
+int eth_change_mtu(struct net_device *dev, int new_mtu)
+{
+	if (new_mtu < 68 || new_mtu > ETH_DATA_LEN)
+		return -EINVAL;
+	dev->mtu = new_mtu;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(eth_change_mtu);
+
+int eth_validate_addr(struct net_device *dev)
+{
+	if (!is_valid_ether_addr(dev->dev_addr))
+		return -EADDRNOTAVAIL;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(eth_validate_addr);
+/* Source: net/ethernet/eth.c */
+
+#define NETREG_DUMMY 5
+/**
+ *	init_dummy_netdev	- init a dummy network device for NAPI
+ *	@dev: device to init
+ *
+ *	This takes a network device structure and initialize the minimum
+ *	amount of fields so it can be used to schedule NAPI polls without
+ *	registering a full blown interface. This is to be used by drivers
+ *	that need to tie several hardware interfaces to a single NAPI
+ *	poll scheduler due to HW limitations.
+ */
+int init_dummy_netdev(struct net_device *dev)
+{
+	/* Clear everything. Note we don't initialize spinlocks
+	 * are they aren't supposed to be taken by any of the
+	 * NAPI code and this dummy netdev is supposed to be
+	 * only ever used for NAPI polls
+	 */
+	memset(dev, 0, sizeof(struct net_device));
+
+	/* make sure we BUG if trying to hit standard
+	 * register/unregister code path
+	 */
+	dev->reg_state = NETREG_DUMMY;
+
+	/* initialize the ref count */
+	atomic_set(&dev->refcnt, 1);
+
+#ifdef CONFIG_NETPOLL
+	/* NAPI wants this */
+	INIT_LIST_HEAD(&dev->napi_list);
+#endif
+
+	/* a dummy interface is started by default */
+	set_bit(__LINK_STATE_PRESENT, &dev->state);
+	set_bit(__LINK_STATE_START, &dev->state);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(init_dummy_netdev);
+/* Source: net/core/dev.c */
+
diff --git a/compat/compat-2.6.32.c b/compat/compat-2.6.32.c
new file mode 100644
index 0000000..68ab03e
--- /dev/null
+++ b/compat/compat-2.6.32.c
@@ -0,0 +1,217 @@
+/*
+ * Copyright 2007	Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.32.
+ */
+
+#include <linux/compat.h>
+#include <linux/netdevice.h>
+#include <linux/time.h>
+
+int __dev_addr_add(struct dev_addr_list **list, int *count,
+		   void *addr, int alen, int glbl)
+{
+	struct dev_addr_list *da;
+
+	for (da = *list; da != NULL; da = da->next) {
+		if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+		    da->da_addrlen == alen) {
+			if (glbl) {
+				int old_glbl = da->da_gusers;
+				da->da_gusers = 1;
+				if (old_glbl)
+					return 0;
+			}
+			da->da_users++;
+			return 0;
+		}
+	}
+
+	da = kzalloc(sizeof(*da), GFP_ATOMIC);
+	if (da == NULL)
+		return -ENOMEM;
+	memcpy(da->da_addr, addr, alen);
+	da->da_addrlen = alen;
+	da->da_users = 1;
+	da->da_gusers = glbl ? 1 : 0;
+	da->next = *list;
+	*list = da;
+	(*count)++;
+	return 0;
+}
+
+int __dev_addr_delete(struct dev_addr_list **list, int *count,
+		      void *addr, int alen, int glbl)
+{
+	struct dev_addr_list *da;
+
+	for (; (da = *list) != NULL; list = &da->next) {
+		if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+		    alen == da->da_addrlen) {
+			if (glbl) {
+				int old_glbl = da->da_gusers;
+				da->da_gusers = 0;
+				if (old_glbl == 0)
+					break;
+			}
+			if (--da->da_users)
+				return 0;
+
+			*list = da->next;
+			kfree(da);
+			(*count)--;
+			return 0;
+		}
+	}
+	return -ENOENT;
+}
+
+int __dev_addr_sync(struct dev_addr_list **to, int *to_count,
+		    struct dev_addr_list **from, int *from_count)
+{
+	struct dev_addr_list *da, *next;
+	int err = 0;
+
+	da = *from;
+	while (da != NULL) {
+		next = da->next;
+		if (!da->da_synced) {
+			err = __dev_addr_add(to, to_count,
+					     da->da_addr, da->da_addrlen, 0);
+			if (err < 0)
+				break;
+			da->da_synced = 1;
+			da->da_users++;
+		} else if (da->da_users == 1) {
+			__dev_addr_delete(to, to_count,
+					  da->da_addr, da->da_addrlen, 0);
+			__dev_addr_delete(from, from_count,
+					  da->da_addr, da->da_addrlen, 0);
+		}
+		da = next;
+	}
+	return err;
+}
+EXPORT_SYMBOL_GPL(__dev_addr_sync);
+
+void __dev_addr_unsync(struct dev_addr_list **to, int *to_count,
+		       struct dev_addr_list **from, int *from_count)
+{
+	struct dev_addr_list *da, *next;
+
+	da = *from;
+	while (da != NULL) {
+		next = da->next;
+		if (da->da_synced) {
+			__dev_addr_delete(to, to_count,
+					  da->da_addr, da->da_addrlen, 0);
+			da->da_synced = 0;
+			__dev_addr_delete(from, from_count,
+					  da->da_addr, da->da_addrlen, 0);
+		}
+		da = next;
+	}
+}
+EXPORT_SYMBOL_GPL(__dev_addr_unsync);
+
+/*
+ * Nonzero if YEAR is a leap year (every 4 years,
+ * except every 100th isn't, and every 400th is).
+ */
+static int __isleap(long year)
+{
+	return (year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0);
+}
+
+/* do a mathdiv for long type */
+static long math_div(long a, long b)
+{
+	return a / b - (a % b < 0);
+}
+
+/* How many leap years between y1 and y2, y1 must less or equal to y2 */
+static long leaps_between(long y1, long y2)
+{
+	long leaps1 = math_div(y1 - 1, 4) - math_div(y1 - 1, 100)
+		+ math_div(y1 - 1, 400);
+	long leaps2 = math_div(y2 - 1, 4) - math_div(y2 - 1, 100)
+		+ math_div(y2 - 1, 400);
+	return leaps2 - leaps1;
+}
+
+/* How many days come before each month (0-12). */
+static const unsigned short __mon_yday[2][13] = {
+	/* Normal years. */
+	{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
+	/* Leap years. */
+	{0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366}
+};
+
+#define SECS_PER_HOUR	(60 * 60)
+#define SECS_PER_DAY	(SECS_PER_HOUR * 24)
+
+/**
+ * time_to_tm - converts the calendar time to local broken-down time
+ *
+ * @totalsecs	the number of seconds elapsed since 00:00:00 on January 1, 1970,
+ *		Coordinated Universal Time (UTC).
+ * @offset	offset seconds adding to totalsecs.
+ * @result	pointer to struct tm variable to receive broken-down time
+ */
+void time_to_tm(time_t totalsecs, int offset, struct tm *result)
+{
+	long days, rem, y;
+	const unsigned short *ip;
+
+	days = totalsecs / SECS_PER_DAY;
+	rem = totalsecs % SECS_PER_DAY;
+	rem += offset;
+	while (rem < 0) {
+		rem += SECS_PER_DAY;
+		--days;
+	}
+	while (rem >= SECS_PER_DAY) {
+		rem -= SECS_PER_DAY;
+		++days;
+	}
+
+	result->tm_hour = rem / SECS_PER_HOUR;
+	rem %= SECS_PER_HOUR;
+	result->tm_min = rem / 60;
+	result->tm_sec = rem % 60;
+
+	/* January 1, 1970 was a Thursday. */
+	result->tm_wday = (4 + days) % 7;
+	if (result->tm_wday < 0)
+		result->tm_wday += 7;
+
+	y = 1970;
+
+	while (days < 0 || days >= (__isleap(y) ? 366 : 365)) {
+		/* Guess a corrected year, assuming 365 days per year. */
+		long yg = y + math_div(days, 365);
+
+		/* Adjust DAYS and Y to match the guessed year. */
+		days -= (yg - y) * 365 + leaps_between(y, yg);
+		y = yg;
+	}
+
+	result->tm_year = y - 1900;
+
+	result->tm_yday = days;
+
+	ip = __mon_yday[__isleap(y)];
+	for (y = 11; days < ip[y]; y--)
+		continue;
+	days -= ip[y];
+
+	result->tm_mon = y;
+	result->tm_mday = days + 1;
+}
+EXPORT_SYMBOL_GPL(time_to_tm);
+/* source: kernel/time/timeconv.c*/
+
diff --git a/compat/compat-2.6.33.c b/compat/compat-2.6.33.c
new file mode 100644
index 0000000..565836c
--- /dev/null
+++ b/compat/compat-2.6.33.c
@@ -0,0 +1,233 @@
+/*
+ * Copyright 2009	Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.33.
+ */
+
+#include <linux/compat.h>
+#include <linux/device.h>
+#include <linux/usb.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#ifdef CONFIG_USB_SUSPEND
+/**
+ * usb_autopm_get_interface_no_resume - increment a USB interface's PM-usage counter
+ * @intf: the usb_interface whose counter should be incremented
+ *
+ * This routine increments @intf's usage counter but does not carry out an
+ * autoresume.
+ *
+ * This routine can run in atomic context.
+ */
+void usb_autopm_get_interface_no_resume(struct usb_interface *intf)
+{
+	struct usb_device       *udev = interface_to_usbdev(intf);
+
+	usb_mark_last_busy(udev);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
+	atomic_inc(&intf->pm_usage_cnt);
+#else
+	intf->pm_usage_cnt++;
+#endif
+	pm_runtime_get_noresume(&intf->dev);
+}
+EXPORT_SYMBOL_GPL(usb_autopm_get_interface_no_resume);
+
+/**
+ * usb_autopm_put_interface_no_suspend - decrement a USB interface's PM-usage counter
+ * @intf: the usb_interface whose counter should be decremented
+ *
+ * This routine decrements @intf's usage counter but does not carry out an
+ * autosuspend.
+ *
+ * This routine can run in atomic context.
+ */
+void usb_autopm_put_interface_no_suspend(struct usb_interface *intf)
+{
+	struct usb_device       *udev = interface_to_usbdev(intf);
+
+	usb_mark_last_busy(udev);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
+	atomic_dec(&intf->pm_usage_cnt);
+#else
+	intf->pm_usage_cnt--;
+#endif
+	pm_runtime_put_noidle(&intf->dev);
+}
+EXPORT_SYMBOL_GPL(usb_autopm_put_interface_no_suspend);
+#endif /* CONFIG_USB_SUSPEND */
+
+#if defined(CONFIG_PCCARD) || defined(CONFIG_PCCARD_MODULE)
+
+/**
+ * pccard_loop_tuple() - loop over tuples in the CIS
+ * @s:		the struct pcmcia_socket where the card is inserted
+ * @function:	the device function we loop for
+ * @code:	which CIS code shall we look for?
+ * @parse:	buffer where the tuple shall be parsed (or NULL, if no parse)
+ * @priv_data:	private data to be passed to the loop_tuple function.
+ * @loop_tuple:	function to call for each CIS entry of type @function. IT
+ *		gets passed the raw tuple, the paresed tuple (if @parse is
+ *		set) and @priv_data.
+ *
+ * pccard_loop_tuple() loops over all CIS entries of type @function, and
+ * calls the @loop_tuple function for each entry. If the call to @loop_tuple
+ * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
+ */
+int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function,
+		      cisdata_t code, cisparse_t *parse, void *priv_data,
+		      int (*loop_tuple) (tuple_t *tuple,
+					 cisparse_t *parse,
+					 void *priv_data))
+{
+	tuple_t tuple;
+	cisdata_t *buf;
+	int ret;
+
+	buf = kzalloc(256, GFP_KERNEL);
+	if (buf == NULL) {
+		dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
+		return -ENOMEM;
+	}
+
+	tuple.TupleData = buf;
+	tuple.TupleDataMax = 255;
+	tuple.TupleOffset = 0;
+	tuple.DesiredTuple = code;
+	tuple.Attributes = 0;
+
+	ret = pccard_get_first_tuple(s, function, &tuple);
+	while (!ret) {
+		if (pccard_get_tuple_data(s, &tuple))
+			goto next_entry;
+
+		if (parse)
+			if (pcmcia_parse_tuple(&tuple, parse))
+				goto next_entry;
+
+		ret = loop_tuple(&tuple, parse, priv_data);
+		if (!ret)
+			break;
+
+next_entry:
+		ret = pccard_get_next_tuple(s, function, &tuple);
+	}
+
+	kfree(buf);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(pccard_loop_tuple);
+/* Source: drivers/pcmcia/cistpl.c */
+
+#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
+
+struct pcmcia_loop_mem {
+	struct pcmcia_device *p_dev;
+	void *priv_data;
+	int (*loop_tuple) (struct pcmcia_device *p_dev,
+			   tuple_t *tuple,
+			   void *priv_data);
+};
+
+/**
+ * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
+ *
+ * pcmcia_do_loop_tuple() is the internal callback for the call from
+ * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
+ * by a struct pcmcia_cfg_mem.
+ */
+static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
+{
+	struct pcmcia_loop_mem *loop = priv;
+
+	return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
+};
+
+/**
+ * pcmcia_loop_tuple() - loop over tuples in the CIS
+ * @p_dev:	the struct pcmcia_device which we need to loop for.
+ * @code:	which CIS code shall we look for?
+ * @priv_data:	private data to be passed to the loop_tuple function.
+ * @loop_tuple:	function to call for each CIS entry of type @function. IT
+ *		gets passed the raw tuple and @priv_data.
+ *
+ * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
+ * calls the @loop_tuple function for each entry. If the call to @loop_tuple
+ * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
+ */
+int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
+		      int (*loop_tuple) (struct pcmcia_device *p_dev,
+					 tuple_t *tuple,
+					 void *priv_data),
+		      void *priv_data)
+{
+	struct pcmcia_loop_mem loop = {
+		.p_dev = p_dev,
+		.loop_tuple = loop_tuple,
+		.priv_data = priv_data};
+
+	return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
+				 &loop, pcmcia_do_loop_tuple);
+}
+EXPORT_SYMBOL_GPL(pcmcia_loop_tuple);
+/* Source: drivers/pcmcia/pcmcia_resource.c */
+
+#endif /* CONFIG_PCMCIA */
+
+#endif /* CONFIG_PCCARD */
+
+/**
+ * platform_device_register_data
+ * @parent: parent device for the device we're adding
+ * @name: base name of the device we're adding
+ * @id: instance id
+ * @data: platform specific data for this platform device
+ * @size: size of platform specific data
+ *
+ * This function creates a simple platform device that requires minimal
+ * resource and memory management. Canned release function freeing memory
+ * allocated for the device allows drivers using such devices to be
+ * unloaded without waiting for the last reference to the device to be
+ * dropped.
+ */
+struct platform_device *platform_device_register_data(
+		struct device *parent,
+		const char *name, int id,
+		const void *data, size_t size)
+{
+	struct platform_device *pdev;
+	int retval;
+
+	pdev = platform_device_alloc(name, id);
+	if (!pdev) {
+		retval = -ENOMEM;
+		goto error;
+	}
+
+	pdev->dev.parent = parent;
+
+	if (size) {
+		retval = platform_device_add_data(pdev, data, size);
+		if (retval)
+			goto error;
+	}
+
+	retval = platform_device_add(pdev);
+	if (retval)
+		goto error;
+
+	return pdev;
+
+error:
+	platform_device_put(pdev);
+	return ERR_PTR(retval);
+}
+EXPORT_SYMBOL_GPL(platform_device_register_data);
diff --git a/compat/compat-2.6.34.c b/compat/compat-2.6.34.c
new file mode 100644
index 0000000..863be64
--- /dev/null
+++ b/compat/compat-2.6.34.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2012    Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.34.
+ */
+
+#include <linux/mmc/sdio_func.h>
+#include <linux/seq_file.h>
+#include "compat-2.6.34.h"
+
+static mmc_pm_flag_t backport_mmc_pm_flags;
+
+void backport_init_mmc_pm_flags(void)
+{
+	backport_mmc_pm_flags = 0;
+}
+
+mmc_pm_flag_t sdio_get_host_pm_caps(struct sdio_func *func)
+{
+	return backport_mmc_pm_flags;
+}
+
+int sdio_set_host_pm_flags(struct sdio_func *func, mmc_pm_flag_t flags)
+{
+	return -EINVAL;
+}
+
+/**
+ * seq_hlist_start - start an iteration of a hlist
+ * @head: the head of the hlist
+ * @pos:  the start position of the sequence
+ *
+ * Called at seq_file->op->start().
+ */
+static struct hlist_node *
+seq_hlist_start(struct hlist_head *head, loff_t pos)
+{
+	struct hlist_node *node;
+
+	hlist_for_each(node, head)
+		if (pos-- == 0)
+			return node;
+	return NULL;
+}
+
+/**
+ * seq_hlist_start_head - start an iteration of a hlist
+ * @head: the head of the hlist
+ * @pos:  the start position of the sequence
+ *
+ * Called at seq_file->op->start(). Call this function if you want to
+ * print a header at the top of the output.
+ */
+struct hlist_node *seq_hlist_start_head(struct hlist_head *head, loff_t pos)
+{
+	if (!pos)
+		return SEQ_START_TOKEN;
+
+	return seq_hlist_start(head, pos - 1);
+}
+EXPORT_SYMBOL_GPL(seq_hlist_start_head);
+
+/**
+ * seq_hlist_next - move to the next position of the hlist
+ * @v:    the current iterator
+ * @head: the head of the hlist
+ * @ppos: the current position
+ *
+ * Called at seq_file->op->next().
+ */
+struct hlist_node *seq_hlist_next(void *v, struct hlist_head *head,
+				  loff_t *ppos)
+{
+	struct hlist_node *node = v;
+
+	++*ppos;
+	if (v == SEQ_START_TOKEN)
+		return head->first;
+	else
+		return node->next;
+}
+EXPORT_SYMBOL_GPL(seq_hlist_next);
diff --git a/compat/compat-2.6.34.h b/compat/compat-2.6.34.h
new file mode 100644
index 0000000..b36b441
--- /dev/null
+++ b/compat/compat-2.6.34.h
@@ -0,0 +1,20 @@
+#ifndef LINUX_26_34_COMPAT_PRIVATE_H
+#define LINUX_26_34_COMPAT_PRIVATE_H
+
+#include <linux/version.h>
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,34))
+
+#include <linux/mmc/sdio_func.h>
+
+void backport_init_mmc_pm_flags(void);
+
+#else /* Kernels >= 2.6.34 */
+
+static inline void backport_init_mmc_pm_flags(void)
+{
+}
+
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,34)) */
+
+#endif /* LINUX_26_34_COMPAT_PRIVATE_H */
diff --git a/compat/compat-2.6.35.c b/compat/compat-2.6.35.c
new file mode 100644
index 0000000..cd556d3
--- /dev/null
+++ b/compat/compat-2.6.35.c
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2010    Kshitij Kulshreshtha <kkhere.geo@gmail.com>
+ * Copyright 2012    Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.35.
+ */
+
+#include <linux/compat.h>
+#include <linux/ctype.h>
+#include <linux/netdevice.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/uaccess.h>
+#include <net/sch_generic.h>
+
+#ifdef CONFIG_RPS
+int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq)
+{
+	int rc;
+
+	/* we can't update the sysfs object for older kernels */
+	if (dev->reg_state == NETREG_REGISTERED)
+		return -EINVAL;
+	dev->num_rx_queues = rxq;
+	return 0;
+}
+#endif
+
+/*
+ * Routine to help set real_num_tx_queues. To avoid skbs mapped to queues
+ * greater then real_num_tx_queues stale skbs on the qdisc must be flushed.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27))
+int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq)
+{
+	unsigned int real_num = dev->real_num_tx_queues;
+
+	if (unlikely(txq > dev->num_tx_queues))
+		return -EINVAL;
+	else if (txq > real_num)
+		dev->real_num_tx_queues = txq;
+	else if (txq < real_num) {
+		dev->real_num_tx_queues = txq;
+		qdisc_reset_all_tx_gt(dev, txq);
+	}
+	return 0;
+}
+#else
+int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq)
+{
+	dev->egress_subqueue_count = txq;
+	/* XXX: consider qdisc reset for older kernels */
+	return 0;
+}
+#endif
+EXPORT_SYMBOL_GPL(netif_set_real_num_tx_queues);
+
+/**
+ * hex_to_bin - convert a hex digit to its real value
+ * @ch: ascii character represents hex digit
+ *
+ * hex_to_bin() converts one hex digit to its actual value or -1 in case of bad
+ * input.
+ */
+int hex_to_bin(char ch)
+{
+	if ((ch >= '0') && (ch <= '9'))
+		return ch - '0';
+	ch = tolower(ch);
+	if ((ch >= 'a') && (ch <= 'f'))
+		return ch - 'a' + 10;
+	return -1;
+}
+EXPORT_SYMBOL_GPL(hex_to_bin);
+
+/**
+ * noop_llseek - No Operation Performed llseek implementation
+ * @file:	file structure to seek on
+ * @offset:	file offset to seek to
+ * @origin:	type of seek
+ *
+ * This is an implementation of ->llseek useable for the rare special case when
+ * userspace expects the seek to succeed but the (device) file is actually not
+ * able to perform the seek. In this case you use noop_llseek() instead of
+ * falling back to the default implementation of ->llseek.
+ */
+loff_t noop_llseek(struct file *file, loff_t offset, int origin)
+{
+	return file->f_pos;
+}
+EXPORT_SYMBOL_GPL(noop_llseek);
+
+/**
+ * simple_write_to_buffer - copy data from user space to the buffer
+ * @to: the buffer to write to
+ * @available: the size of the buffer
+ * @ppos: the current position in the buffer
+ * @from: the user space buffer to read from
+ * @count: the maximum number of bytes to read
+ *
+ * The simple_write_to_buffer() function reads up to @count bytes from the user
+ * space address starting at @from into the buffer @to at offset @ppos.
+ *
+ * On success, the number of bytes written is returned and the offset @ppos is
+ * advanced by this number, or negative value is returned on error.
+ **/
+ssize_t simple_write_to_buffer(void *to, size_t available, loff_t *ppos,
+		const void __user *from, size_t count)
+{
+	loff_t pos = *ppos;
+	size_t res;
+
+	if (pos < 0)
+		return -EINVAL;
+	if (pos >= available || !count)
+		return 0;
+	if (count > available - pos)
+		count = available - pos;
+	res = copy_from_user(to + pos, from, count);
+	if (res == count)
+		return -EFAULT;
+	count -= res;
+	*ppos = pos + count;
+	return count;
+}
+EXPORT_SYMBOL_GPL(simple_write_to_buffer);
diff --git a/compat/compat-2.6.36.c b/compat/compat-2.6.36.c
new file mode 100644
index 0000000..92ef827
--- /dev/null
+++ b/compat/compat-2.6.36.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright 2010    Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.36.
+ */
+
+#include <linux/compat.h>
+#include <linux/usb.h>
+
+#ifdef CPTCFG_BACKPORT_OPTION_USB_URB_THREAD_FIX
+/* Callers must hold anchor->lock */
+static void __usb_unanchor_urb(struct urb *urb, struct usb_anchor *anchor)
+{
+	urb->anchor = NULL;
+	list_del(&urb->anchor_list);
+	usb_put_urb(urb);
+	if (list_empty(&anchor->urb_list))
+		wake_up(&anchor->wait);
+}
+
+/**
+ * usb_unlink_anchored_urbs - asynchronously cancel transfer requests en masse
+ * @anchor: anchor the requests are bound to
+ *
+ * this allows all outstanding URBs to be unlinked starting
+ * from the back of the queue. This function is asynchronous.
+ * The unlinking is just tiggered. It may happen after this
+ * function has returned.
+ *
+ * This routine should not be called by a driver after its disconnect
+ * method has returned.
+ */
+void usb_unlink_anchored_urbs(struct usb_anchor *anchor)
+{
+	struct urb *victim;
+
+	while ((victim = usb_get_from_anchor(anchor)) != NULL) {
+		usb_unlink_urb(victim);
+		usb_put_urb(victim);
+	}
+}
+EXPORT_SYMBOL_GPL(usb_unlink_anchored_urbs);
+
+/**
+ * usb_get_from_anchor - get an anchor's oldest urb
+ * @anchor: the anchor whose urb you want
+ *
+ * this will take the oldest urb from an anchor,
+ * unanchor and return it
+ */
+struct urb *usb_get_from_anchor(struct usb_anchor *anchor)
+{
+	struct urb *victim;
+	unsigned long flags;
+
+	spin_lock_irqsave(&anchor->lock, flags);
+	if (!list_empty(&anchor->urb_list)) {
+		victim = list_entry(anchor->urb_list.next, struct urb,
+				    anchor_list);
+		usb_get_urb(victim);
+		__usb_unanchor_urb(victim, anchor);
+	} else {
+		victim = NULL;
+	}
+	spin_unlock_irqrestore(&anchor->lock, flags);
+
+	return victim;
+}
+EXPORT_SYMBOL_GPL(usb_get_from_anchor);
+
+/**
+ * usb_scuttle_anchored_urbs - unanchor all an anchor's urbs
+ * @anchor: the anchor whose urbs you want to unanchor
+ *
+ * use this to get rid of all an anchor's urbs
+ */
+void usb_scuttle_anchored_urbs(struct usb_anchor *anchor)
+{
+	struct urb *victim;
+	unsigned long flags;
+
+	spin_lock_irqsave(&anchor->lock, flags);
+	while (!list_empty(&anchor->urb_list)) {
+		victim = list_entry(anchor->urb_list.prev, struct urb,
+				    anchor_list);
+		__usb_unanchor_urb(victim, anchor);
+	}
+	spin_unlock_irqrestore(&anchor->lock, flags);
+}
+EXPORT_SYMBOL_GPL(usb_scuttle_anchored_urbs);
+
+#endif /* CPTCFG_BACKPORT_OPTION_USB_URB_THREAD_FIX */
+
+struct workqueue_struct *system_wq __read_mostly;
+struct workqueue_struct *system_long_wq __read_mostly;
+struct workqueue_struct *system_nrt_wq __read_mostly;
+EXPORT_SYMBOL_GPL(system_wq);
+EXPORT_SYMBOL_GPL(system_long_wq);
+EXPORT_SYMBOL_GPL(system_nrt_wq);
+
+int schedule_work(struct work_struct *work)
+{
+	return queue_work(system_wq, work);
+}
+EXPORT_SYMBOL_GPL(schedule_work);
+
+int schedule_work_on(int cpu, struct work_struct *work)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27))
+	return queue_work_on(cpu, system_wq, work);
+#else
+	return queue_work(system_wq, work);
+#endif
+}
+EXPORT_SYMBOL_GPL(schedule_work_on);
+
+int schedule_delayed_work(struct delayed_work *dwork,
+                                 unsigned long delay)
+{
+	return queue_delayed_work(system_wq, dwork, delay);
+}
+EXPORT_SYMBOL_GPL(schedule_delayed_work);
+
+int schedule_delayed_work_on(int cpu,
+                                    struct delayed_work *dwork,
+                                    unsigned long delay)
+{
+	return queue_delayed_work_on(cpu, system_wq, dwork, delay);
+}
+EXPORT_SYMBOL_GPL(schedule_delayed_work_on);
+
+void flush_scheduled_work(void)
+{
+	/*
+	 * It is debatable which one we should prioritize first, lets
+	 * go with the old kernel's one first for now (keventd_wq) and
+	 * if think its reasonable later we can flip this around.
+	 */
+	flush_workqueue(system_wq);
+	flush_scheduled_work();
+}
+EXPORT_SYMBOL_GPL(flush_scheduled_work);
+
+/**
+ * work_busy - test whether a work is currently pending or running
+ * @work: the work to be tested
+ *
+ * Test whether @work is currently pending or running.  There is no
+ * synchronization around this function and the test result is
+ * unreliable and only useful as advisory hints or for debugging.
+ * Especially for reentrant wqs, the pending state might hide the
+ * running state.
+ *
+ * RETURNS:
+ * OR'd bitmask of WORK_BUSY_* bits.
+ */
+unsigned int work_busy(struct work_struct *work)
+{
+	unsigned int ret = 0;
+
+	if (work_pending(work))
+		ret |= WORK_BUSY_PENDING;
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(work_busy);
+
+void backport_system_workqueue_create(void)
+{
+	system_wq = alloc_workqueue("events", 0, 0);
+	system_long_wq = alloc_workqueue("events_long", 0, 0);
+	system_nrt_wq = create_singlethread_workqueue("events_nrt");
+	BUG_ON(!system_wq || !system_long_wq || !system_nrt_wq);
+}
+
+void backport_system_workqueue_destroy(void)
+{
+	destroy_workqueue(system_wq);
+	destroy_workqueue(system_long_wq);
+	destroy_workqueue(system_nrt_wq);
+}
diff --git a/compat/compat-2.6.37.c b/compat/compat-2.6.37.c
new file mode 100644
index 0000000..3ef2909
--- /dev/null
+++ b/compat/compat-2.6.37.c
@@ -0,0 +1,359 @@
+/*
+ * Copyright 2010    Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.37.
+ */
+
+#include <linux/compat.h>
+#include <linux/netdevice.h>
+#include <net/sock.h>
+#include <linux/nsproxy.h>
+#include <linux/vmalloc.h>
+#include <net/genetlink.h>
+#include <linux/leds.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
+static const void *net_current_ns(void)
+{
+	return current->nsproxy->net_ns;
+}
+
+static const void *net_initial_ns(void)
+{
+	return &init_net;
+}
+
+static const void *net_netlink_ns(struct sock *sk)
+{
+	return sock_net(sk);
+}
+
+struct kobj_ns_type_operations net_ns_type_operations = {
+	.type = KOBJ_NS_TYPE_NET,
+	.current_ns = net_current_ns,
+	.netlink_ns = net_netlink_ns,
+	.initial_ns = net_initial_ns,
+};
+EXPORT_SYMBOL_GPL(net_ns_type_operations);
+
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)*/ 
+
+#undef genl_info
+#undef genl_unregister_family
+
+static LIST_HEAD(compat_nl_fam);
+
+static struct genl_ops *genl_get_cmd(u8 cmd, struct genl_family *family)
+{
+	struct genl_ops *ops;
+
+	list_for_each_entry(ops, &family->family.ops_list, ops.ops_list)
+		if (ops->cmd == cmd)
+			return ops;
+
+	return NULL;
+}
+
+
+static int nl_doit_wrapper(struct sk_buff *skb, struct genl_info *info)
+{
+	struct compat_genl_info compat_info;
+	struct genl_family *family;
+	struct genl_ops *ops;
+	int err;
+
+	list_for_each_entry(family, &compat_nl_fam, list) {
+		if (family->id == info->nlhdr->nlmsg_type)
+			goto found;
+	}
+	return -ENOENT;
+
+found:
+	ops = genl_get_cmd(info->genlhdr->cmd, family);
+	if (!ops)
+		return -ENOENT;
+
+	memset(&compat_info.user_ptr, 0, sizeof(compat_info.user_ptr));
+	compat_info.info = info;
+#define __copy(_field) compat_info._field = info->_field
+	__copy(snd_seq);
+	__copy(snd_pid);
+	__copy(genlhdr);
+	__copy(attrs);
+#undef __copy
+	if (family->pre_doit) {
+		err = family->pre_doit(ops, skb, &compat_info);
+		if (err)
+			return err;
+	}
+
+	err = ops->doit(skb, &compat_info);
+
+	if (family->post_doit)
+		family->post_doit(ops, skb, &compat_info);
+
+	return err;
+}
+
+int compat_genl_register_family_with_ops(struct genl_family *family,
+					 struct genl_ops *ops, size_t n_ops)
+{
+	int i, ret;
+
+#define __copy(_field) family->family._field = family->_field
+	__copy(id);
+	__copy(hdrsize);
+	__copy(version);
+	__copy(maxattr);
+	strncpy(family->family.name, family->name, sizeof(family->family.name));
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
+	__copy(netnsok);
+#endif
+#undef __copy
+
+	ret = genl_register_family(&family->family);
+	if (ret < 0)
+		return ret;
+
+	family->attrbuf = family->family.attrbuf;
+	family->id = family->family.id;
+
+	for (i = 0; i < n_ops; i++) {
+#define __copy(_field) ops[i].ops._field = ops[i]._field
+		__copy(cmd);
+		__copy(flags);
+		__copy(policy);
+		__copy(dumpit);
+		__copy(done);
+#undef __copy
+		if (ops[i].doit)
+			ops[i].ops.doit = nl_doit_wrapper;
+		ret = genl_register_ops(&family->family, &ops[i].ops);
+		if (ret < 0)
+			goto error_ops;
+	}
+	list_add(&family->list, &compat_nl_fam);
+
+	return ret;
+
+error_ops:
+	compat_genl_unregister_family(family);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(compat_genl_register_family_with_ops);
+
+int compat_genl_unregister_family(struct genl_family *family)
+{
+	int err;
+	err = genl_unregister_family(&family->family);
+	list_del(&family->list);
+	return err;
+}
+EXPORT_SYMBOL_GPL(compat_genl_unregister_family);
+
+#if IS_ENABLED(CONFIG_LEDS_CLASS) && !defined(CPTCFG_BACKPORT_BUILD_LEDS)
+
+#undef led_brightness_set
+#undef led_classdev_unregister
+
+static DEFINE_SPINLOCK(led_lock);
+static LIST_HEAD(led_timers);
+
+struct led_timer {
+	struct list_head list;
+	struct led_classdev *cdev;
+	struct timer_list blink_timer;
+	unsigned long blink_delay_on;
+	unsigned long blink_delay_off;
+	int blink_brightness;
+};
+
+static void led_brightness_set(struct led_classdev *led_cdev,
+			       enum led_brightness brightness)
+{
+	led_cdev->brightness = brightness;
+	led_cdev->brightness_set(led_cdev, brightness);
+}
+
+static struct led_timer *led_get_timer(struct led_classdev *led_cdev)
+{
+	struct led_timer *p;
+	unsigned long flags;
+
+	spin_lock_irqsave(&led_lock, flags);
+	list_for_each_entry(p, &led_timers, list) {
+		if (p->cdev == led_cdev)
+			goto found;
+	}
+	p = NULL;
+found:
+	spin_unlock_irqrestore(&led_lock, flags);
+	return p;
+}
+
+static void led_stop_software_blink(struct led_timer *led)
+{
+	del_timer_sync(&led->blink_timer);
+	led->blink_delay_on = 0;
+	led->blink_delay_off = 0;
+}
+
+static void led_timer_function(unsigned long data)
+{
+	struct led_timer *led = (struct led_timer *)data;
+	unsigned long brightness;
+	unsigned long delay;
+
+	if (!led->blink_delay_on || !led->blink_delay_off) {
+		led->cdev->brightness_set(led->cdev, LED_OFF);
+		return;
+	}
+
+	brightness = led->cdev->brightness;
+	if (!brightness) {
+		/* Time to switch the LED on. */
+		brightness = led->blink_brightness;
+		delay = led->blink_delay_on;
+	} else {
+		/* Store the current brightness value to be able
+		 * to restore it when the delay_off period is over.
+		 */
+		led->blink_brightness = brightness;
+		brightness = LED_OFF;
+		delay = led->blink_delay_off;
+	}
+
+	led_brightness_set(led->cdev, brightness);
+	mod_timer(&led->blink_timer, jiffies + msecs_to_jiffies(delay));
+}
+
+static struct led_timer *led_new_timer(struct led_classdev *led_cdev)
+{
+	struct led_timer *led;
+	unsigned long flags;
+
+	led = kzalloc(sizeof(struct led_timer), GFP_ATOMIC);
+	if (!led)
+		return NULL;
+
+	led->cdev = led_cdev;
+	init_timer(&led->blink_timer);
+	led->blink_timer.function = led_timer_function;
+	led->blink_timer.data = (unsigned long) led;
+
+	spin_lock_irqsave(&led_lock, flags);
+	list_add(&led->list, &led_timers);
+	spin_unlock_irqrestore(&led_lock, flags);
+
+	return led;
+}
+
+void led_blink_set(struct led_classdev *led_cdev,
+		   unsigned long *delay_on,
+		   unsigned long *delay_off)
+{
+	struct led_timer *led;
+	int current_brightness;
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25))
+	if (led_cdev->blink_set &&
+	    !led_cdev->blink_set(led_cdev, delay_on, delay_off))
+		return;
+#endif
+
+	led = led_get_timer(led_cdev);
+	if (!led) {
+		led = led_new_timer(led_cdev);
+		if (!led)
+			return;
+	}
+
+	/* blink with 1 Hz as default if nothing specified */
+	if (!*delay_on && !*delay_off)
+		*delay_on = *delay_off = 500;
+
+	if (led->blink_delay_on == *delay_on &&
+	    led->blink_delay_off == *delay_off)
+		return;
+
+	current_brightness = led_cdev->brightness;
+	if (current_brightness)
+		led->blink_brightness = current_brightness;
+	if (!led->blink_brightness)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
+		led->blink_brightness = led_cdev->max_brightness;
+#else
+		led->blink_brightness = LED_FULL;
+#endif
+
+	led_stop_software_blink(led);
+	led->blink_delay_on = *delay_on;
+	led->blink_delay_off = *delay_off;
+
+	/* never on - don't blink */
+	if (!*delay_on)
+		return;
+
+	/* never off - just set to brightness */
+	if (!*delay_off) {
+		led_brightness_set(led_cdev, led->blink_brightness);
+		return;
+	}
+
+	mod_timer(&led->blink_timer, jiffies + 1);
+}
+EXPORT_SYMBOL_GPL(led_blink_set);
+
+void compat_led_brightness_set(struct led_classdev *led_cdev,
+			       enum led_brightness brightness)
+{
+	struct led_timer *led = led_get_timer(led_cdev);
+
+	if (led)
+		led_stop_software_blink(led);
+
+	return led_cdev->brightness_set(led_cdev, brightness);
+}
+EXPORT_SYMBOL_GPL(compat_led_brightness_set);
+
+void compat_led_classdev_unregister(struct led_classdev *led_cdev)
+{
+	struct led_timer *led = led_get_timer(led_cdev);
+	unsigned long flags;
+
+	if (led) {
+		del_timer_sync(&led->blink_timer);
+		spin_lock_irqsave(&led_lock, flags);
+		list_del(&led->list);
+		spin_unlock_irqrestore(&led_lock, flags);
+		kfree(led);
+	}
+
+	led_classdev_unregister(led_cdev);
+}
+EXPORT_SYMBOL_GPL(compat_led_classdev_unregister);
+#endif
+
+/**
+ *	vzalloc - allocate virtually contiguous memory with zero fill
+ *	@size:	allocation size
+ *	Allocate enough pages to cover @size from the page level
+ *	allocator and map them into contiguous kernel virtual space.
+ *	The memory allocated is set to zero.
+ *
+ *	For tight control over page level allocator and protection flags
+ *	use __vmalloc() instead.
+ */
+void *vzalloc(unsigned long size)
+{
+	void *buf;
+	buf = vmalloc(size);
+	if (buf)
+		memset(buf, 0, size);
+	return buf;
+}
+EXPORT_SYMBOL_GPL(vzalloc);
diff --git a/compat/compat-2.6.39.c b/compat/compat-2.6.39.c
new file mode 100644
index 0000000..0e36da8
--- /dev/null
+++ b/compat/compat-2.6.39.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2011    Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.39.
+ */
+
+#include <linux/compat.h>
+#include <linux/tty.h>
+#include <linux/sched.h>
+#include <linux/module.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27))
+/*
+ *		Termios Helper Methods
+ */
+static void unset_locked_termios(struct ktermios *termios,
+				 struct ktermios *old,
+				 struct ktermios *locked)
+{
+	int	i;
+
+#define NOSET_MASK(x, y, z) (x = ((x) & ~(z)) | ((y) & (z)))
+
+	if (!locked) {
+		printk(KERN_WARNING "Warning?!? termios_locked is NULL.\n");
+		return;
+	}
+
+	NOSET_MASK(termios->c_iflag, old->c_iflag, locked->c_iflag);
+	NOSET_MASK(termios->c_oflag, old->c_oflag, locked->c_oflag);
+	NOSET_MASK(termios->c_cflag, old->c_cflag, locked->c_cflag);
+	NOSET_MASK(termios->c_lflag, old->c_lflag, locked->c_lflag);
+	termios->c_line = locked->c_line ? old->c_line : termios->c_line;
+	for (i = 0; i < NCCS; i++)
+		termios->c_cc[i] = locked->c_cc[i] ?
+			old->c_cc[i] : termios->c_cc[i];
+	/* FIXME: What should we do for i/ospeed */
+}
+
+/**
+ *	tty_set_termios		-	update termios values
+ *	@tty: tty to update
+ *	@new_termios: desired new value
+ *
+ *	Perform updates to the termios values set on this terminal. There
+ *	is a bit of layering violation here with n_tty in terms of the
+ *	internal knowledge of this function.
+ *
+ *	Locking: termios_mutex
+ */
+int tty_set_termios(struct tty_struct *tty, struct ktermios *new_termios)
+{
+	struct ktermios old_termios;
+	struct tty_ldisc *ld;
+	unsigned long flags;
+
+	/*
+	 *	Perform the actual termios internal changes under lock.
+	 */
+
+
+	/* FIXME: we need to decide on some locking/ordering semantics
+	   for the set_termios notification eventually */
+	mutex_lock(&tty->termios_mutex);
+	old_termios = *tty->termios;
+	*tty->termios = *new_termios;
+	unset_locked_termios(tty->termios, &old_termios, tty->termios_locked);
+
+	/* See if packet mode change of state. */
+	if (tty->link && tty->link->packet) {
+		int extproc = (old_termios.c_lflag & EXTPROC) |
+				(tty->termios->c_lflag & EXTPROC);
+		int old_flow = ((old_termios.c_iflag & IXON) &&
+				(old_termios.c_cc[VSTOP] == '\023') &&
+				(old_termios.c_cc[VSTART] == '\021'));
+		int new_flow = (I_IXON(tty) &&
+				STOP_CHAR(tty) == '\023' &&
+				START_CHAR(tty) == '\021');
+		if ((old_flow != new_flow) || extproc) {
+			spin_lock_irqsave(&tty->ctrl_lock, flags);
+			if (old_flow != new_flow) {
+				tty->ctrl_status &= ~(TIOCPKT_DOSTOP | TIOCPKT_NOSTOP);
+				if (new_flow)
+					tty->ctrl_status |= TIOCPKT_DOSTOP;
+				else
+					tty->ctrl_status |= TIOCPKT_NOSTOP;
+			}
+			if (extproc)
+				tty->ctrl_status |= TIOCPKT_IOCTL;
+			spin_unlock_irqrestore(&tty->ctrl_lock, flags);
+			wake_up_interruptible(&tty->link->read_wait);
+		}
+	}
+
+	if (tty->ops->set_termios)
+		(*tty->ops->set_termios)(tty, &old_termios);
+	else
+		tty_termios_copy_hw(tty->termios, &old_termios);
+
+	ld = tty_ldisc_ref(tty);
+	if (ld != NULL) {
+		if (ld->ops->set_termios)
+			(ld->ops->set_termios)(tty, &old_termios);
+		tty_ldisc_deref(ld);
+	}
+	mutex_unlock(&tty->termios_mutex);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(tty_set_termios);
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)) */
+
diff --git a/compat/compat-3.0.c b/compat/compat-3.0.c
new file mode 100644
index 0000000..e841373
--- /dev/null
+++ b/compat/compat-3.0.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2011    Hauke Mehrtens <hauke@hauke-m.de>
+ * Copyright 2011    Alexey Dobriyan <adobriyan@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 3.0.
+ */
+
+#include <linux/compat.h>
+#include <linux/if_ether.h>
+
+/* This pulls-in a lot of non-exported symbol backports
+ * on kernels older than 2.6.32. There's no harm for not
+ * making this available on kernels < 2.6.32. */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
+#include <linux/pagemap.h>
+
+/* This backports:
+ *
+ * commit d9d90e5eb70e09903dadff42099b6c948f814050
+ * Author: Hugh Dickins <hughd@google.com>
+ * Date:   Mon Jun 27 16:18:04 2011 -0700
+ *
+ *	tmpfs: add shmem_read_mapping_page_gfp
+ */
+
+struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
+                                        pgoff_t index, gfp_t gfp)
+{
+       return read_cache_page_gfp(mapping, index, gfp);
+}
+EXPORT_SYMBOL_GPL(shmem_read_mapping_page_gfp);
+#endif
+
+int mac_pton(const char *s, u8 *mac)
+{
+	int i;
+
+	/* XX:XX:XX:XX:XX:XX */
+	if (strlen(s) < 3 * ETH_ALEN - 1)
+		return 0;
+
+	/* Don't dirty result unless string is valid MAC. */
+	for (i = 0; i < ETH_ALEN; i++) {
+		if (!strchr("0123456789abcdefABCDEF", s[i * 3]))
+			return 0;
+		if (!strchr("0123456789abcdefABCDEF", s[i * 3 + 1]))
+			return 0;
+		if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
+			return 0;
+	}
+	for (i = 0; i < ETH_ALEN; i++) {
+		mac[i] = (hex_to_bin(s[i * 3]) << 4) | hex_to_bin(s[i * 3 + 1]);
+	}
+	return 1;
+}
+EXPORT_SYMBOL_GPL(mac_pton);
+
+#define kstrto_from_user(f, g, type)					\
+int f(const char __user *s, size_t count, unsigned int base, type *res)	\
+{									\
+	/* sign, base 2 representation, newline, terminator */		\
+	char buf[1 + sizeof(type) * 8 + 1 + 1];				\
+									\
+	count = min(count, sizeof(buf) - 1);				\
+	if (copy_from_user(buf, s, count))				\
+		return -EFAULT;						\
+	buf[count] = '\0';						\
+	return g(buf, base, res);					\
+}									\
+EXPORT_SYMBOL_GPL(f)
+
+kstrto_from_user(kstrtoull_from_user,	kstrtoull,	unsigned long long);
+kstrto_from_user(kstrtoll_from_user,	kstrtoll,	long long);
+kstrto_from_user(kstrtoul_from_user,	kstrtoul,	unsigned long);
+kstrto_from_user(kstrtol_from_user,	kstrtol,	long);
+kstrto_from_user(kstrtouint_from_user,	kstrtouint,	unsigned int);
+kstrto_from_user(kstrtoint_from_user,	kstrtoint,	int);
+kstrto_from_user(kstrtou16_from_user,	kstrtou16,	u16);
+kstrto_from_user(kstrtos16_from_user,	kstrtos16,	s16);
+kstrto_from_user(kstrtou8_from_user,	kstrtou8,	u8);
+kstrto_from_user(kstrtos8_from_user,	kstrtos8,	s8);
diff --git a/compat/compat-3.1.c b/compat/compat-3.1.c
new file mode 100644
index 0000000..cb5d596
--- /dev/null
+++ b/compat/compat-3.1.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2012    Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 3.1.
+ */
+
+#include <linux/idr.h>
+#include <linux/cpufreq.h>
+
+/* This backports:
+ * commit 3d73710880afa3d61cf57b5d4eb192e812eb7e4f
+ * Author: Jesse Barnes <jbarnes@virtuousgeek.org>
+ * Date:   Tue Jun 28 10:59:12 2011 -0700
+ *
+ * 	cpufreq: expose a cpufreq_quick_get_max routine
+ */
+#ifdef CONFIG_CPU_FREQ
+unsigned int cpufreq_quick_get_max(unsigned int cpu)
+{
+	struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
+	unsigned int ret_freq = 0;
+
+	if (policy) {
+		ret_freq = policy->max;
+		cpufreq_cpu_put(policy);
+	}
+
+	return ret_freq;
+}
+EXPORT_SYMBOL_GPL(cpufreq_quick_get_max);
+#endif
+
+static DEFINE_SPINLOCK(compat_simple_ida_lock);
+
+/**
+ * ida_simple_get - get a new id.
+ * @ida: the (initialized) ida.
+ * @start: the minimum id (inclusive, < 0x8000000)
+ * @end: the maximum id (exclusive, < 0x8000000 or 0)
+ * @gfp_mask: memory allocation flags
+ *
+ * Allocates an id in the range start <= id < end, or returns -ENOSPC.
+ * On memory allocation failure, returns -ENOMEM.
+ *
+ * Use ida_simple_remove() to get rid of an id.
+ */
+int ida_simple_get(struct ida *ida, unsigned int start, unsigned int end,
+		   gfp_t gfp_mask)
+{
+	int ret, id;
+	unsigned int max;
+	unsigned long flags;
+
+	BUG_ON((int)start < 0);
+	BUG_ON((int)end < 0);
+
+	if (end == 0)
+		max = 0x80000000;
+	else {
+		BUG_ON(end < start);
+		max = end - 1;
+	}
+
+again:
+	if (!ida_pre_get(ida, gfp_mask))
+		return -ENOMEM;
+
+	spin_lock_irqsave(&compat_simple_ida_lock, flags);
+	ret = ida_get_new_above(ida, start, &id);
+	if (!ret) {
+		if (id > max) {
+			ida_remove(ida, id);
+			ret = -ENOSPC;
+		} else {
+			ret = id;
+		}
+	}
+	spin_unlock_irqrestore(&compat_simple_ida_lock, flags);
+
+	if (unlikely(ret == -EAGAIN))
+		goto again;
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(ida_simple_get);
+
+/**
+ * ida_simple_remove - remove an allocated id.
+ * @ida: the (initialized) ida.
+ * @id: the id returned by ida_simple_get.
+ */
+void ida_simple_remove(struct ida *ida, unsigned int id)
+{
+	unsigned long flags;
+
+	BUG_ON((int)id < 0);
+	spin_lock_irqsave(&compat_simple_ida_lock, flags);
+	ida_remove(ida, id);
+	spin_unlock_irqrestore(&compat_simple_ida_lock, flags);
+}
+EXPORT_SYMBOL_GPL(ida_simple_remove);
+/* source lib/idr.c */
+
diff --git a/compat/compat-3.3.c b/compat/compat-3.3.c
new file mode 100644
index 0000000..8489344
--- /dev/null
+++ b/compat/compat-3.3.c
@@ -0,0 +1,173 @@
+/*
+ * Copyright 2012  Luis R. Rodriguez <mcgrof@frijolero.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 3.3.
+ */
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/skbuff.h>
+#include <linux/module.h>
+#include <net/dst.h>
+#include <net/xfrm.h>
+
+static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
+{
+	new->tstamp		= old->tstamp;
+	new->dev		= old->dev;
+	new->transport_header	= old->transport_header;
+	new->network_header	= old->network_header;
+	new->mac_header		= old->mac_header;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+	skb_dst_copy(new, old);
+	new->rxhash		= old->rxhash;
+#else
+	skb_dst_set(new, dst_clone(skb_dst(old)));
+#endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
+	new->ooo_okay		= old->ooo_okay;
+#endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
+	new->l4_rxhash		= old->l4_rxhash;
+#endif
+#ifdef CONFIG_XFRM
+	new->sp			= secpath_get(old->sp);
+#endif
+	memcpy(new->cb, old->cb, sizeof(old->cb));
+	new->csum		= old->csum;
+	new->local_df		= old->local_df;
+	new->pkt_type		= old->pkt_type;
+	new->ip_summed		= old->ip_summed;
+	skb_copy_queue_mapping(new, old);
+	new->priority		= old->priority;
+#if IS_ENABLED(CONFIG_IP_VS)
+	new->ipvs_property	= old->ipvs_property;
+#endif
+	new->protocol		= old->protocol;
+	new->mark		= old->mark;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
+	new->skb_iif		= old->skb_iif;
+#endif
+	__nf_copy(new, old);
+#if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE)
+	new->nf_trace		= old->nf_trace;
+#endif
+#ifdef CONFIG_NET_SCHED
+	new->tc_index		= old->tc_index;
+#ifdef CONFIG_NET_CLS_ACT
+	new->tc_verd		= old->tc_verd;
+#endif
+#endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27))
+	new->vlan_tci		= old->vlan_tci;
+#endif
+
+	skb_copy_secmark(new, old);
+}
+
+static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
+{
+#ifndef NET_SKBUFF_DATA_USES_OFFSET
+	/*
+	 *	Shift between the two data areas in bytes
+	 */
+	unsigned long offset = new->data - old->data;
+#endif
+
+	__copy_skb_header(new, old);
+
+#ifndef NET_SKBUFF_DATA_USES_OFFSET
+	/* {transport,network,mac}_header are relative to skb->head */
+	new->transport_header += offset;
+	new->network_header   += offset;
+	if (skb_mac_header_was_set(new))
+		new->mac_header	      += offset;
+#endif
+	skb_shinfo(new)->gso_size = skb_shinfo(old)->gso_size;
+	skb_shinfo(new)->gso_segs = skb_shinfo(old)->gso_segs;
+	skb_shinfo(new)->gso_type = skb_shinfo(old)->gso_type;
+}
+
+static void skb_clone_fraglist(struct sk_buff *skb)
+{
+	struct sk_buff *list;
+
+	skb_walk_frags(skb, list)
+		skb_get(list);
+}
+
+
+/**
+ *	__pskb_copy	-	create copy of an sk_buff with private head.
+ *	@skb: buffer to copy
+ *	@headroom: headroom of new skb
+ *	@gfp_mask: allocation priority
+ *
+ *	Make a copy of both an &sk_buff and part of its data, located
+ *	in header. Fragmented data remain shared. This is used when
+ *	the caller wishes to modify only header of &sk_buff and needs
+ *	private copy of the header to alter. Returns %NULL on failure
+ *	or the pointer to the buffer on success.
+ *	The returned buffer has a reference count of 1.
+ */
+
+struct sk_buff *__pskb_copy(struct sk_buff *skb, int headroom, gfp_t gfp_mask)
+{
+	unsigned int size = skb_headlen(skb) + headroom;
+	struct sk_buff *n = alloc_skb(size, gfp_mask);
+
+	if (!n)
+		goto out;
+
+	/* Set the data pointer */
+	skb_reserve(n, headroom);
+	/* Set the tail pointer and length */
+	skb_put(n, skb_headlen(skb));
+	/* Copy the bytes */
+	skb_copy_from_linear_data(skb, n->data, n->len);
+
+	n->truesize += skb->data_len;
+	n->data_len  = skb->data_len;
+	n->len	     = skb->len;
+
+	if (skb_shinfo(skb)->nr_frags) {
+		int i;
+
+/*
+ * SKBTX_DEV_ZEROCOPY was added on 3.1 as well but requires ubuf
+ * stuff added to the skb which we do not have
+ */
+#if 0
+		if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) {
+			if (skb_copy_ubufs(skb, gfp_mask)) {
+				kfree_skb(n);
+				n = NULL;
+				goto out;
+			}
+		}
+#endif
+		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+			skb_shinfo(n)->frags[i] = skb_shinfo(skb)->frags[i];
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
+			skb_frag_ref(skb, i);
+#else
+			get_page(skb_shinfo(skb)->frags[i].page);
+#endif
+		}
+		skb_shinfo(n)->nr_frags = i;
+	}
+
+	if (skb_has_frag_list(skb)) {
+		skb_shinfo(n)->frag_list = skb_shinfo(skb)->frag_list;
+		skb_clone_fraglist(n);
+	}
+
+	copy_skb_header(n, skb);
+out:
+	return n;
+}
+EXPORT_SYMBOL_GPL(__pskb_copy);
diff --git a/compat/compat-3.4.c b/compat/compat-3.4.c
new file mode 100644
index 0000000..1718cd2
--- /dev/null
+++ b/compat/compat-3.4.c
@@ -0,0 +1,796 @@
+/*
+ * Copyright 2012  Luis R. Rodriguez <mcgrof@frijolero.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 3.4.
+ */
+
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/wait.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
+#include <linux/regmap.h>
+#include <linux/i2c.h>
+#include <linux/spi/spi.h>
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0))
+#if defined(CPTCFG_VIDEO_DEV_MODULE)
+#include <media/soc_camera.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-dev.h>
+#include <media/videobuf-core.h>
+#include <media/videobuf2-core.h>
+#include <media/soc_mediabus.h>
+#include <linux/regulator/consumer.h>
+#endif /* defined(CPTCFG_VIDEO_DEV_MODULE) */
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0)) */
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)) */
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) */
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0))
+
+#if defined(CPTCFG_VIDEO_V4L2_MODULE)
+int soc_camera_power_on(struct device *dev,
+			struct soc_camera_subdev_desc *ssdd)
+{
+	int ret = regulator_bulk_enable(ssdd->num_regulators,
+					ssdd->regulators);
+	if (ret < 0) {
+		dev_err(dev, "Cannot enable regulators\n");
+		return ret;
+	}
+
+	if (ssdd->power) {
+		ret = ssdd->power(dev, 1);
+		if (ret < 0) {
+			dev_err(dev,
+				"Platform failed to power-on the camera.\n");
+			regulator_bulk_disable(ssdd->num_regulators,
+					       ssdd->regulators);
+		}
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(soc_camera_power_on);
+
+int soc_camera_power_off(struct device *dev,
+			 struct soc_camera_subdev_desc *ssdd)
+{
+	int ret = 0;
+	int err;
+
+	if (ssdd->power) {
+		err = ssdd->power(dev, 0);
+		if (err < 0) {
+			dev_err(dev,
+			        "Platform failed to power-off the camera.\n");
+			ret = err;
+		}
+	}
+
+	err = regulator_bulk_disable(ssdd->num_regulators,
+				     ssdd->regulators);
+	if (err < 0) {
+		dev_err(dev, "Cannot disable regulators\n");
+		ret = ret ? : err;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(soc_camera_power_off);
+#endif /* defined(CPTCFG_VIDEO_V4L2_MODULE) */
+
+#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0)) */
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)) */
+
+#if defined(CONFIG_REGMAP)
+static void devm_regmap_release(struct device *dev, void *res)
+{
+	regmap_exit(*(struct regmap **)res);
+}
+
+#if defined(CONFIG_REGMAP_I2C)
+static int regmap_i2c_write(
+			    struct device *dev,
+			    const void *data,
+			    size_t count)
+{
+	struct i2c_client *i2c = to_i2c_client(dev);
+	int ret;
+
+	ret = i2c_master_send(i2c, data, count);
+	if (ret == count)
+		return 0;
+	else if (ret < 0)
+		return ret;
+	else
+		return -EIO;
+}
+
+static int regmap_i2c_gather_write(
+				   struct device *dev,
+				   const void *reg, size_t reg_size,
+				   const void *val, size_t val_size)
+{
+	struct i2c_client *i2c = to_i2c_client(dev);
+	struct i2c_msg xfer[2];
+	int ret;
+
+	/* If the I2C controller can't do a gather tell the core, it
+	 * will substitute in a linear write for us.
+	 */
+	if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_NOSTART))
+		return -ENOTSUPP;
+
+	xfer[0].addr = i2c->addr;
+	xfer[0].flags = 0;
+	xfer[0].len = reg_size;
+	xfer[0].buf = (void *)reg;
+
+	xfer[1].addr = i2c->addr;
+	xfer[1].flags = I2C_M_NOSTART;
+	xfer[1].len = val_size;
+	xfer[1].buf = (void *)val;
+
+	ret = i2c_transfer(i2c->adapter, xfer, 2);
+	if (ret == 2)
+		return 0;
+	if (ret < 0)
+		return ret;
+	else
+		return -EIO;
+}
+
+static int regmap_i2c_read(
+			   struct device *dev,
+			   const void *reg, size_t reg_size,
+			   void *val, size_t val_size)
+{
+	struct i2c_client *i2c = to_i2c_client(dev);
+	struct i2c_msg xfer[2];
+	int ret;
+
+	xfer[0].addr = i2c->addr;
+	xfer[0].flags = 0;
+	xfer[0].len = reg_size;
+	xfer[0].buf = (void *)reg;
+
+	xfer[1].addr = i2c->addr;
+	xfer[1].flags = I2C_M_RD;
+	xfer[1].len = val_size;
+	xfer[1].buf = val;
+
+	ret = i2c_transfer(i2c->adapter, xfer, 2);
+	if (ret == 2)
+		return 0;
+	else if (ret < 0)
+		return ret;
+	else
+		return -EIO;
+}
+
+static struct regmap_bus regmap_i2c = {
+	.write = regmap_i2c_write,
+	.gather_write = regmap_i2c_gather_write,
+	.read = regmap_i2c_read,
+};
+#endif /* defined(CONFIG_REGMAP_I2C) */
+
+/**
+ * devm_regmap_init(): Initialise managed register map
+ *
+ * @dev: Device that will be interacted with
+ * @bus: Bus-specific callbacks to use with device
+ * @bus_context: Data passed to bus-specific callbacks
+ * @config: Configuration for register map
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer
+ * to a struct regmap.  This function should generally not be called
+ * directly, it should be called by bus-specific init functions.  The
+ * map will be automatically freed by the device management code.
+ */
+struct regmap *devm_regmap_init(struct device *dev,
+				const struct regmap_bus *bus,
+				const struct regmap_config *config)
+{
+	struct regmap **ptr, *regmap;
+
+	ptr = devres_alloc(devm_regmap_release, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return ERR_PTR(-ENOMEM);
+
+	regmap = regmap_init(dev,
+			     bus,
+			     config);
+	if (!IS_ERR(regmap)) {
+		*ptr = regmap;
+		devres_add(dev, ptr);
+	} else {
+		devres_free(ptr);
+	}
+
+	return regmap;
+}
+EXPORT_SYMBOL_GPL(devm_regmap_init);
+
+#if defined(CONFIG_REGMAP_I2C)
+/**
+ * devm_regmap_init_i2c(): Initialise managed register map
+ *
+ * @i2c: Device that will be interacted with
+ * @config: Configuration for register map
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer
+ * to a struct regmap.  The regmap will be automatically freed by the
+ * device management code.
+ */
+struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c,
+				    const struct regmap_config *config)
+{
+	return devm_regmap_init(&i2c->dev, &regmap_i2c, config);
+}
+EXPORT_SYMBOL_GPL(devm_regmap_init_i2c);
+#endif /* defined(CONFIG_REGMAP_I2C) */
+
+#if defined(CONFIG_REGMAP_SPI)
+static int regmap_spi_write(
+			    struct device *dev,
+			    const void *data, size_t count)
+{
+	struct spi_device *spi = to_spi_device(dev);
+
+	return spi_write(spi, data, count);
+}
+
+static int regmap_spi_gather_write(
+				   struct device *dev,
+				   const void *reg, size_t reg_len,
+				   const void *val, size_t val_len)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	struct spi_message m;
+	struct spi_transfer t[2] = { { .tx_buf = reg, .len = reg_len, },
+				     { .tx_buf = val, .len = val_len, }, };
+
+	spi_message_init(&m);
+	spi_message_add_tail(&t[0], &m);
+	spi_message_add_tail(&t[1], &m);
+
+	return spi_sync(spi, &m);
+}
+
+static int regmap_spi_read(
+			   struct device *dev,
+			   const void *reg, size_t reg_size,
+			   void *val, size_t val_size)
+{
+	struct spi_device *spi = to_spi_device(dev);
+
+	return spi_write_then_read(spi, reg, reg_size, val, val_size);
+}
+
+static struct regmap_bus regmap_spi = {
+	.write = regmap_spi_write,
+	.gather_write = regmap_spi_gather_write,
+/*
+ * See commit 0d509f2b112b
+ * only 3.9 kernels have this we'll ignore it
+ * given I have not seen drivers use these we
+ * are backporting. We'll -EINVAL these.
+ */
+#if 0
+	.async_write = regmap_spi_async_write,
+	.async_alloc = regmap_spi_async_alloc,
+#endif
+	.read = regmap_spi_read,
+	.read_flag_mask = 0x80,
+
+};
+
+/**
+ * devm_regmap_init_spi(): Initialise register map
+ *
+ * @spi: Device that will be interacted with
+ * @config: Configuration for register map
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer
+ * to a struct regmap.  The map will be automatically freed by the
+ * device management code.
+ */
+struct regmap *devm_regmap_init_spi(struct spi_device *spi,
+				    const struct regmap_config *config)
+{
+	return devm_regmap_init(&spi->dev, &regmap_spi, config);
+}
+EXPORT_SYMBOL_GPL(devm_regmap_init_spi);
+#endif /* defined(CONFIG_REGMAP_SPI) */
+
+#endif /* defined(CONFIG_REGMAP) */
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) */
+
+/* __wake_up_common was declared as part of the wait.h until
+ * 2.6.31 in which they made it private to the scheduler. Prefix it with
+ * compat to avoid double declaration issues.
+ */
+static void compat_wake_up_common(wait_queue_head_t *q, unsigned int mode,
+			int nr_exclusive, int wake_flags, void *key)
+{
+	wait_queue_t *curr, *next;
+
+	list_for_each_entry_safe(curr, next, &q->task_list, task_list) {
+		unsigned flags = curr->flags;
+
+		if (curr->func(curr, mode, wake_flags, key) &&
+				(flags & WQ_FLAG_EXCLUSIVE) && !--nr_exclusive)
+			break;
+	}
+}
+
+/* The last 'nr' parameter was added to the __wake_up_locked() function
+ * in 3.4 kernel. Define a new one prefixed with compat_ for the new API.
+ */
+void compat_wake_up_locked(wait_queue_head_t *q, unsigned int mode, int nr)
+{
+	compat_wake_up_common(q, mode, nr, 0, NULL);
+}
+EXPORT_SYMBOL_GPL(compat_wake_up_locked);
+
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <linux/delay.h>
+
+#define setsda(adap, val)	adap->setsda(adap->data, val)
+#define setscl(adap, val)	adap->setscl(adap->data, val)
+#define getsda(adap)		adap->getsda(adap->data)
+#define getscl(adap)		adap->getscl(adap->data)
+
+#define bit_dbg(level, dev, format, args...) \
+	do {} while (0)
+
+static inline void sdalo(struct i2c_algo_bit_data *adap)
+{
+	setsda(adap, 0);
+	udelay((adap->udelay + 1) / 2);
+}
+
+static inline void sdahi(struct i2c_algo_bit_data *adap)
+{
+	setsda(adap, 1);
+	udelay((adap->udelay + 1) / 2);
+}
+
+static inline void scllo(struct i2c_algo_bit_data *adap)
+{
+	setscl(adap, 0);
+	udelay(adap->udelay / 2);
+}
+
+static int sclhi(struct i2c_algo_bit_data *adap)
+{
+	unsigned long start;
+
+	setscl(adap, 1);
+
+	/* Not all adapters have scl sense line... */
+	if (!adap->getscl)
+		goto done;
+
+	start = jiffies;
+	while (!getscl(adap)) {
+		/* This hw knows how to read the clock line, so we wait
+		 * until it actually gets high.  This is safer as some
+		 * chips may hold it low ("clock stretching") while they
+		 * are processing data internally.
+		 */
+		if (time_after(jiffies, start + adap->timeout)) {
+			/* Test one last time, as we may have been preempted
+			 * between last check and timeout test.
+			 */
+			if (getscl(adap))
+				break;
+			return -ETIMEDOUT;
+		}
+		cpu_relax();
+	}
+#ifdef DEBUG
+	if (jiffies != start && i2c_debug >= 3)
+		pr_debug("i2c-algo-bit: needed %ld jiffies for SCL to go "
+			 "high\n", jiffies - start);
+#endif
+
+done:
+	udelay(adap->udelay);
+	return 0;
+}
+
+static void i2c_start(struct i2c_algo_bit_data *adap)
+{
+	/* assert: scl, sda are high */
+	setsda(adap, 0);
+	udelay(adap->udelay);
+	scllo(adap);
+}
+
+static void i2c_repstart(struct i2c_algo_bit_data *adap)
+{
+	/* assert: scl is low */
+	sdahi(adap);
+	sclhi(adap);
+	setsda(adap, 0);
+	udelay(adap->udelay);
+	scllo(adap);
+}
+
+
+static void i2c_stop(struct i2c_algo_bit_data *adap)
+{
+	/* assert: scl is low */
+	sdalo(adap);
+	sclhi(adap);
+	setsda(adap, 1);
+	udelay(adap->udelay);
+}
+
+static int i2c_outb(struct i2c_adapter *i2c_adap, unsigned char c)
+{
+	int i;
+	int sb;
+	int ack;
+	struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
+
+	/* assert: scl is low */
+	for (i = 7; i >= 0; i--) {
+		sb = (c >> i) & 1;
+		setsda(adap, sb);
+		udelay((adap->udelay + 1) / 2);
+		if (sclhi(adap) < 0) { /* timed out */
+			bit_dbg(1, &i2c_adap->dev, "i2c_outb: 0x%02x, "
+				"timeout at bit #%d\n", (int)c, i);
+			return -ETIMEDOUT;
+		}
+		/* FIXME do arbitration here:
+		 * if (sb && !getsda(adap)) -> ouch! Get out of here.
+		 *
+		 * Report a unique code, so higher level code can retry
+		 * the whole (combined) message and *NOT* issue STOP.
+		 */
+		scllo(adap);
+	}
+	sdahi(adap);
+	if (sclhi(adap) < 0) { /* timeout */
+		bit_dbg(1, &i2c_adap->dev, "i2c_outb: 0x%02x, "
+			"timeout at ack\n", (int)c);
+		return -ETIMEDOUT;
+	}
+
+	/* read ack: SDA should be pulled down by slave, or it may
+	 * NAK (usually to report problems with the data we wrote).
+	 */
+	ack = !getsda(adap);    /* ack: sda is pulled low -> success */
+	bit_dbg(2, &i2c_adap->dev, "i2c_outb: 0x%02x %s\n", (int)c,
+		ack ? "A" : "NA");
+
+	scllo(adap);
+	return ack;
+	/* assert: scl is low (sda undef) */
+}
+
+static int i2c_inb(struct i2c_adapter *i2c_adap)
+{
+	/* read byte via i2c port, without start/stop sequence	*/
+	/* acknowledge is sent in i2c_read.			*/
+	int i;
+	unsigned char indata = 0;
+	struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
+
+	/* assert: scl is low */
+	sdahi(adap);
+	for (i = 0; i < 8; i++) {
+		if (sclhi(adap) < 0) { /* timeout */
+			bit_dbg(1, &i2c_adap->dev, "i2c_inb: timeout at bit "
+				"#%d\n", 7 - i);
+			return -ETIMEDOUT;
+		}
+		indata *= 2;
+		if (getsda(adap))
+			indata |= 0x01;
+		setscl(adap, 0);
+		udelay(i == 7 ? adap->udelay / 2 : adap->udelay);
+	}
+	/* assert: scl is low */
+	return indata;
+}
+
+static int try_address(struct i2c_adapter *i2c_adap,
+		       unsigned char addr, int retries)
+{
+	struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
+	int i, ret = 0;
+
+	for (i = 0; i <= retries; i++) {
+		ret = i2c_outb(i2c_adap, addr);
+		if (ret == 1 || i == retries)
+			break;
+		bit_dbg(3, &i2c_adap->dev, "emitting stop condition\n");
+		i2c_stop(adap);
+		udelay(adap->udelay);
+		yield();
+		bit_dbg(3, &i2c_adap->dev, "emitting start condition\n");
+		i2c_start(adap);
+	}
+	if (i && ret)
+		bit_dbg(1, &i2c_adap->dev, "Used %d tries to %s client at "
+			"0x%02x: %s\n", i + 1,
+			addr & 1 ? "read from" : "write to", addr >> 1,
+			ret == 1 ? "success" : "failed, timeout?");
+	return ret;
+}
+
+static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
+{
+	unsigned short flags = msg->flags;
+	unsigned short nak_ok = msg->flags & I2C_M_IGNORE_NAK;
+	struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
+
+	unsigned char addr;
+	int ret, retries;
+
+	retries = nak_ok ? 0 : i2c_adap->retries;
+
+	if (flags & I2C_M_TEN) {
+		/* a ten bit address */
+		addr = 0xf0 | ((msg->addr >> 7) & 0x06);
+		bit_dbg(2, &i2c_adap->dev, "addr0: %d\n", addr);
+		/* try extended address code...*/
+		ret = try_address(i2c_adap, addr, retries);
+		if ((ret != 1) && !nak_ok)  {
+			dev_err(&i2c_adap->dev,
+				"died at extended address code\n");
+			return -ENXIO;
+		}
+		/* the remaining 8 bit address */
+		ret = i2c_outb(i2c_adap, msg->addr & 0xff);
+		if ((ret != 1) && !nak_ok) {
+			/* the chip did not ack / xmission error occurred */
+			dev_err(&i2c_adap->dev, "died at 2nd address code\n");
+			return -ENXIO;
+		}
+		if (flags & I2C_M_RD) {
+			bit_dbg(3, &i2c_adap->dev, "emitting repeated "
+				"start condition\n");
+			i2c_repstart(adap);
+			/* okay, now switch into reading mode */
+			addr |= 0x01;
+			ret = try_address(i2c_adap, addr, retries);
+			if ((ret != 1) && !nak_ok) {
+				dev_err(&i2c_adap->dev,
+					"died at repeated address code\n");
+				return -EIO;
+			}
+		}
+	} else {		/* normal 7bit address	*/
+		addr = msg->addr << 1;
+		if (flags & I2C_M_RD)
+			addr |= 1;
+		if (flags & I2C_M_REV_DIR_ADDR)
+			addr ^= 1;
+		ret = try_address(i2c_adap, addr, retries);
+		if ((ret != 1) && !nak_ok)
+			return -ENXIO;
+	}
+
+	return 0;
+}
+
+static int sendbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
+{
+	const unsigned char *temp = msg->buf;
+	int count = msg->len;
+	unsigned short nak_ok = msg->flags & I2C_M_IGNORE_NAK;
+	int retval;
+	int wrcount = 0;
+
+	while (count > 0) {
+		retval = i2c_outb(i2c_adap, *temp);
+
+		/* OK/ACK; or ignored NAK */
+		if ((retval > 0) || (nak_ok && (retval == 0))) {
+			count--;
+			temp++;
+			wrcount++;
+
+		/* A slave NAKing the master means the slave didn't like
+		 * something about the data it saw.  For example, maybe
+		 * the SMBus PEC was wrong.
+		 */
+		} else if (retval == 0) {
+			dev_err(&i2c_adap->dev, "sendbytes: NAK bailout.\n");
+			return -EIO;
+
+		/* Timeout; or (someday) lost arbitration
+		 *
+		 * FIXME Lost ARB implies retrying the transaction from
+		 * the first message, after the "winning" master issues
+		 * its STOP.  As a rule, upper layer code has no reason
+		 * to know or care about this ... it is *NOT* an error.
+		 */
+		} else {
+			dev_err(&i2c_adap->dev, "sendbytes: error %d\n",
+					retval);
+			return retval;
+		}
+	}
+	return wrcount;
+}
+
+static int acknak(struct i2c_adapter *i2c_adap, int is_ack)
+{
+	struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
+
+	/* assert: sda is high */
+	if (is_ack)		/* send ack */
+		setsda(adap, 0);
+	udelay((adap->udelay + 1) / 2);
+	if (sclhi(adap) < 0) {	/* timeout */
+		dev_err(&i2c_adap->dev, "readbytes: ack/nak timeout\n");
+		return -ETIMEDOUT;
+	}
+	scllo(adap);
+	return 0;
+}
+
+static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
+{
+	int inval;
+	int rdcount = 0;	/* counts bytes read */
+	unsigned char *temp = msg->buf;
+	int count = msg->len;
+	const unsigned flags = msg->flags;
+
+	while (count > 0) {
+		inval = i2c_inb(i2c_adap);
+		if (inval >= 0) {
+			*temp = inval;
+			rdcount++;
+		} else {   /* read timed out */
+			break;
+		}
+
+		temp++;
+		count--;
+
+		/* Some SMBus transactions require that we receive the
+		   transaction length as the first read byte. */
+		if (rdcount == 1 && (flags & I2C_M_RECV_LEN)) {
+			if (inval <= 0 || inval > I2C_SMBUS_BLOCK_MAX) {
+				if (!(flags & I2C_M_NO_RD_ACK))
+					acknak(i2c_adap, 0);
+				dev_err(&i2c_adap->dev, "readbytes: invalid "
+					"block length (%d)\n", inval);
+				return -EPROTO;
+			}
+			/* The original count value accounts for the extra
+			   bytes, that is, either 1 for a regular transaction,
+			   or 2 for a PEC transaction. */
+			count += inval;
+			msg->len += inval;
+		}
+
+		bit_dbg(2, &i2c_adap->dev, "readbytes: 0x%02x %s\n",
+			inval,
+			(flags & I2C_M_NO_RD_ACK)
+				? "(no ack/nak)"
+				: (count ? "A" : "NA"));
+
+		if (!(flags & I2C_M_NO_RD_ACK)) {
+			inval = acknak(i2c_adap, count);
+			if (inval < 0)
+				return inval;
+		}
+	}
+	return rdcount;
+}
+
+
+static u32 bit_func(struct i2c_adapter *adap)
+{
+	return I2C_FUNC_I2C | I2C_FUNC_NOSTART | I2C_FUNC_SMBUS_EMUL |
+	       I2C_FUNC_SMBUS_READ_BLOCK_DATA |
+	       I2C_FUNC_SMBUS_BLOCK_PROC_CALL |
+	       I2C_FUNC_10BIT_ADDR | I2C_FUNC_PROTOCOL_MANGLING;
+}
+
+static int bit_xfer(struct i2c_adapter *i2c_adap,
+		    struct i2c_msg msgs[], int num)
+{
+	struct i2c_msg *pmsg;
+	struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
+	int i, ret;
+	unsigned short nak_ok;
+
+	if (adap->pre_xfer) {
+		ret = adap->pre_xfer(i2c_adap);
+		if (ret < 0)
+			return ret;
+	}
+
+	bit_dbg(3, &i2c_adap->dev, "emitting start condition\n");
+	i2c_start(adap);
+	for (i = 0; i < num; i++) {
+		pmsg = &msgs[i];
+		nak_ok = pmsg->flags & I2C_M_IGNORE_NAK;
+		if (!(pmsg->flags & I2C_M_NOSTART)) {
+			if (i) {
+				bit_dbg(3, &i2c_adap->dev, "emitting "
+					"repeated start condition\n");
+				i2c_repstart(adap);
+			}
+			ret = bit_doAddress(i2c_adap, pmsg);
+			if ((ret != 0) && !nak_ok) {
+				bit_dbg(1, &i2c_adap->dev, "NAK from "
+					"device addr 0x%02x msg #%d\n",
+					msgs[i].addr, i);
+				goto bailout;
+			}
+		}
+		if (pmsg->flags & I2C_M_RD) {
+			/* read bytes into buffer*/
+			ret = readbytes(i2c_adap, pmsg);
+			if (ret >= 1)
+				bit_dbg(2, &i2c_adap->dev, "read %d byte%s\n",
+					ret, ret == 1 ? "" : "s");
+			if (ret < pmsg->len) {
+				if (ret >= 0)
+					ret = -EIO;
+				goto bailout;
+			}
+		} else {
+			/* write bytes from buffer */
+			ret = sendbytes(i2c_adap, pmsg);
+			if (ret >= 1)
+				bit_dbg(2, &i2c_adap->dev, "wrote %d byte%s\n",
+					ret, ret == 1 ? "" : "s");
+			if (ret < pmsg->len) {
+				if (ret >= 0)
+					ret = -EIO;
+				goto bailout;
+			}
+		}
+	}
+	ret = i;
+
+bailout:
+	bit_dbg(3, &i2c_adap->dev, "emitting stop condition\n");
+	i2c_stop(adap);
+
+	if (adap->post_xfer)
+		adap->post_xfer(i2c_adap);
+	return ret;
+}
+
+
+const struct i2c_algorithm i2c_bit_algo = {
+        .master_xfer    = bit_xfer,
+	.functionality  = bit_func,
+};
+EXPORT_SYMBOL_GPL(i2c_bit_algo);
+#endif
+
+int simple_open(struct inode *inode, struct file *file)
+{
+	if (inode->i_private)
+		file->private_data = inode->i_private;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(simple_open);
diff --git a/compat/compat-3.5.c b/compat/compat-3.5.c
new file mode 100644
index 0000000..0355ed1
--- /dev/null
+++ b/compat/compat-3.5.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2012-2013  Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 3.5.
+ */
+
+#include <linux/module.h>
+#include <linux/highuid.h>
+#include <linux/ktime.h>
+#include <linux/hrtimer.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
+#include <linux/device.h>
+
+/**
+ * devres_release - Find a device resource and destroy it, calling release
+ * @dev: Device to find resource from
+ * @release: Look for resources associated with this release function
+ * @match: Match function (optional)
+ * @match_data: Data for the match function
+ *
+ * Find the latest devres of @dev associated with @release and for
+ * which @match returns 1.  If @match is NULL, it's considered to
+ * match all.  If found, the resource is removed atomically, the
+ * release function called and the resource freed.
+ *
+ * RETURNS:
+ * 0 if devres is found and freed, -ENOENT if not found.
+ */
+int devres_release(struct device *dev, dr_release_t release,
+		   dr_match_t match, void *match_data)
+{
+	void *res;
+
+	res = devres_remove(dev, release, match, match_data);
+	if (unlikely(!res))
+		return -ENOENT;
+
+	(*release)(dev, res);
+	devres_free(res);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devres_release);
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) */
+
+/*
+ * Commit 7a4e7408c5cadb240e068a662251754a562355e3
+ * exported overflowuid and overflowgid for all
+ * kernel configurations, prior to that we only
+ * had it exported when CONFIG_UID16 was enabled.
+ * We are technically redefining it here but
+ * nothing seems to be changing it, except
+ * kernel/ code does epose it via sysctl and
+ * proc... if required later we can add that here.
+ */
+#ifndef CONFIG_UID16
+int overflowuid = DEFAULT_OVERFLOWUID;
+int overflowgid = DEFAULT_OVERFLOWGID;
+
+EXPORT_SYMBOL_GPL(overflowuid);
+EXPORT_SYMBOL_GPL(overflowgid);
+#endif
+
+/*
+ * We can't access the timekeeper static variable
+ * on older kernels so we're shit out of luck and
+ * have to rely on time that might jump. Upgrade
+ * if you want timestamps that don't jump, this
+ * important for DRM vblank and page flip event
+ * timestamps.
+ */
+ktime_t ktime_get_monotonic_offset(void)
+{
+	return ktime_get();
+}
+EXPORT_SYMBOL_GPL(ktime_get_monotonic_offset);
diff --git a/compat/compat-3.6.c b/compat/compat-3.6.c
new file mode 100644
index 0000000..53991ee
--- /dev/null
+++ b/compat/compat-3.6.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2013  Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * Backport compatibility file for Linux for kernels 3.6.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/scatterlist.h>
+#include <linux/export.h>
+#include <linux/bug.h>
+#include <linux/bitmap.h>
+#include <linux/i2c.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
+/**
+ * __i2c_transfer - unlocked flavor of i2c_transfer
+ * @adap: Handle to I2C bus
+ * @msgs: One or more messages to execute before STOP is issued to
+ *     terminate the operation; each message begins with a START.
+ * @num: Number of messages to be executed.
+ *
+ * Returns negative errno, else the number of messages executed.
+ *
+ * Adapter lock must be held when calling this function. No debug logging
+ * takes place. adap->algo->master_xfer existence isn't checked.
+ */
+int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
+{
+	unsigned long orig_jiffies;
+	int ret, try;
+
+	/* Retry automatically on arbitration loss */
+	orig_jiffies = jiffies;
+	for (ret = 0, try = 0; try <= adap->retries; try++) {
+		ret = adap->algo->master_xfer(adap, msgs, num);
+		if (ret != -EAGAIN)
+			break;
+		if (time_after(jiffies, orig_jiffies + adap->timeout))
+			break;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(__i2c_transfer);
+#endif
+
+/**
+ * memweight - count the total number of bits set in memory area
+ * @ptr: pointer to the start of the area
+ * @bytes: the size of the area
+ */
+size_t memweight(const void *ptr, size_t bytes)
+{
+	size_t ret = 0;
+	size_t longs;
+	const unsigned char *bitmap = ptr;
+
+	for (; bytes > 0 && ((unsigned long)bitmap) % sizeof(long);
+			bytes--, bitmap++)
+		ret += hweight8(*bitmap);
+
+	longs = bytes / sizeof(long);
+	if (longs) {
+		BUG_ON(longs >= INT_MAX / BITS_PER_LONG);
+		ret += bitmap_weight((unsigned long *)bitmap,
+				longs * BITS_PER_LONG);
+		bytes -= longs * sizeof(long);
+		bitmap += longs * sizeof(long);
+	}
+	/*
+	 * The reason that this last loop is distinct from the preceding
+	 * bitmap_weight() call is to compute 1-bits in the last region smaller
+	 * than sizeof(long) properly on big-endian systems.
+	 */
+	for (; bytes > 0; bytes--, bitmap++)
+		ret += hweight8(*bitmap);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(memweight);
+
+/**
+ * sg_alloc_table_from_pages - Allocate and initialize an sg table from
+ *			       an array of pages
+ * @sgt:	The sg table header to use
+ * @pages:	Pointer to an array of page pointers
+ * @n_pages:	Number of pages in the pages array
+ * @offset:     Offset from start of the first page to the start of a buffer
+ * @size:       Number of valid bytes in the buffer (after offset)
+ * @gfp_mask:	GFP allocation mask
+ *
+ *  Description:
+ *    Allocate and initialize an sg table from a list of pages. Contiguous
+ *    ranges of the pages are squashed into a single scatterlist node. A user
+ *    may provide an offset at a start and a size of valid data in a buffer
+ *    specified by the page array. The returned sg table is released by
+ *    sg_free_table.
+ *
+ * Returns:
+ *   0 on success, negative error on failure
+ */
+int sg_alloc_table_from_pages(struct sg_table *sgt,
+	struct page **pages, unsigned int n_pages,
+	unsigned long offset, unsigned long size,
+	gfp_t gfp_mask)
+{
+	unsigned int chunks;
+	unsigned int i;
+	unsigned int cur_page;
+	int ret;
+	struct scatterlist *s;
+
+	/* compute number of contiguous chunks */
+	chunks = 1;
+	for (i = 1; i < n_pages; ++i)
+		if (page_to_pfn(pages[i]) != page_to_pfn(pages[i - 1]) + 1)
+			++chunks;
+
+	ret = sg_alloc_table(sgt, chunks, gfp_mask);
+	if (unlikely(ret))
+		return ret;
+
+	/* merging chunks and putting them into the scatterlist */
+	cur_page = 0;
+	for_each_sg(sgt->sgl, s, sgt->orig_nents, i) {
+		unsigned long chunk_size;
+		unsigned int j;
+
+		/* look for the end of the current chunk */
+		for (j = cur_page + 1; j < n_pages; ++j)
+			if (page_to_pfn(pages[j]) !=
+			    page_to_pfn(pages[j - 1]) + 1)
+				break;
+
+		chunk_size = ((j - cur_page) << PAGE_SHIFT) - offset;
+		sg_set_page(s, pages[cur_page], min(size, chunk_size), offset);
+		size -= chunk_size;
+		offset = 0;
+		cur_page = j;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(sg_alloc_table_from_pages);
diff --git a/compat/compat-3.7.c b/compat/compat-3.7.c
new file mode 100644
index 0000000..c8810fc
--- /dev/null
+++ b/compat/compat-3.7.c
@@ -0,0 +1,255 @@
+/*
+ * Copyright 2012  Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 3.7.
+ */
+
+#include <linux/workqueue.h>
+#include <linux/export.h>
+#include <linux/pci.h>
+#include <linux/pci_regs.h>
+
+bool mod_delayed_work(struct workqueue_struct *wq, struct delayed_work *dwork,
+		      unsigned long delay)
+{
+	cancel_delayed_work(dwork);
+	queue_delayed_work(wq, dwork, delay);
+	return false;
+}
+EXPORT_SYMBOL_GPL(mod_delayed_work);
+
+#ifdef CONFIG_PCI
+/*
+ * Kernels >= 3.7 get their PCI-E Capabilities Register cached
+ * via the pci_dev->pcie_flags_reg so for older kernels we have
+ * no other option but to read this every single time we need
+ * it accessed. If we really cared to improve the efficiency
+ * of this we could try to find an unused u16 varible on the
+ * pci_dev but if we found it we likely would remove it from
+ * the kernel anyway right? Bite me.
+ */
+static inline u16 pcie_flags_reg(struct pci_dev *dev)
+{
+	int pos;
+	u16 reg16;
+
+	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	if (!pos)
+		return 0;
+
+	pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &reg16);
+
+	return reg16;
+}
+
+static inline int pci_pcie_type(struct pci_dev *dev)
+{
+	return (pcie_flags_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4;
+}
+
+static inline int pcie_cap_version(struct pci_dev *dev)
+{
+	return pcie_flags_reg(dev) & PCI_EXP_FLAGS_VERS;
+}
+
+static inline bool pcie_cap_has_devctl(const struct pci_dev *dev)
+{
+	return true;
+}
+
+static inline bool pcie_cap_has_lnkctl(struct pci_dev *dev)
+{
+	int type = pci_pcie_type(dev);
+
+	return pcie_cap_version(dev) > 1 ||
+	       type == PCI_EXP_TYPE_ROOT_PORT ||
+	       type == PCI_EXP_TYPE_ENDPOINT ||
+	       type == PCI_EXP_TYPE_LEG_END;
+}
+
+static inline bool pcie_cap_has_sltctl(struct pci_dev *dev)
+{
+	int type = pci_pcie_type(dev);
+
+	return pcie_cap_version(dev) > 1 ||
+	       type == PCI_EXP_TYPE_ROOT_PORT ||
+	       (type == PCI_EXP_TYPE_DOWNSTREAM &&
+		pcie_flags_reg(dev) & PCI_EXP_FLAGS_SLOT);
+}
+
+static inline bool pcie_cap_has_rtctl(struct pci_dev *dev)
+{
+	int type = pci_pcie_type(dev);
+
+	return pcie_cap_version(dev) > 1 ||
+	       type == PCI_EXP_TYPE_ROOT_PORT ||
+	       type == PCI_EXP_TYPE_RC_EC;
+}
+
+static bool pcie_capability_reg_implemented(struct pci_dev *dev, int pos)
+{
+	if (!pci_is_pcie(dev))
+		return false;
+
+	switch (pos) {
+	case PCI_EXP_FLAGS_TYPE:
+		return true;
+	case PCI_EXP_DEVCAP:
+	case PCI_EXP_DEVCTL:
+	case PCI_EXP_DEVSTA:
+		return pcie_cap_has_devctl(dev);
+	case PCI_EXP_LNKCAP:
+	case PCI_EXP_LNKCTL:
+	case PCI_EXP_LNKSTA:
+		return pcie_cap_has_lnkctl(dev);
+	case PCI_EXP_SLTCAP:
+	case PCI_EXP_SLTCTL:
+	case PCI_EXP_SLTSTA:
+		return pcie_cap_has_sltctl(dev);
+	case PCI_EXP_RTCTL:
+	case PCI_EXP_RTCAP:
+	case PCI_EXP_RTSTA:
+		return pcie_cap_has_rtctl(dev);
+	case PCI_EXP_DEVCAP2:
+	case PCI_EXP_DEVCTL2:
+	case PCI_EXP_LNKCAP2:
+	case PCI_EXP_LNKCTL2:
+	case PCI_EXP_LNKSTA2:
+		return pcie_cap_version(dev) > 1;
+	default:
+		return false;
+	}
+}
+
+/*
+ * Note that these accessor functions are only for the "PCI Express
+ * Capability" (see PCIe spec r3.0, sec 7.8).  They do not apply to the
+ * other "PCI Express Extended Capabilities" (AER, VC, ACS, MFVC, etc.)
+ */
+int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val)
+{
+	int ret;
+
+	*val = 0;
+	if (pos & 1)
+		return -EINVAL;
+
+	if (pcie_capability_reg_implemented(dev, pos)) {
+		ret = pci_read_config_word(dev, pci_pcie_cap(dev) + pos, val);
+		/*
+		 * Reset *val to 0 if pci_read_config_word() fails, it may
+		 * have been written as 0xFFFF if hardware error happens
+		 * during pci_read_config_word().
+		 */
+		if (ret)
+			*val = 0;
+		return ret;
+	}
+
+	/*
+	 * For Functions that do not implement the Slot Capabilities,
+	 * Slot Status, and Slot Control registers, these spaces must
+	 * be hardwired to 0b, with the exception of the Presence Detect
+	 * State bit in the Slot Status register of Downstream Ports,
+	 * which must be hardwired to 1b.  (PCIe Base Spec 3.0, sec 7.8)
+	 */
+	if (pci_is_pcie(dev) && pos == PCI_EXP_SLTSTA &&
+		 pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM) {
+		*val = PCI_EXP_SLTSTA_PDS;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(pcie_capability_read_word);
+
+int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val)
+{
+	int ret;
+
+	*val = 0;
+	if (pos & 3)
+		return -EINVAL;
+
+	if (pcie_capability_reg_implemented(dev, pos)) {
+		ret = pci_read_config_dword(dev, pci_pcie_cap(dev) + pos, val);
+		/*
+		 * Reset *val to 0 if pci_read_config_dword() fails, it may
+		 * have been written as 0xFFFFFFFF if hardware error happens
+		 * during pci_read_config_dword().
+		 */
+		if (ret)
+			*val = 0;
+		return ret;
+	}
+
+	if (pci_is_pcie(dev) && pos == PCI_EXP_SLTCTL &&
+		 pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM) {
+		*val = PCI_EXP_SLTSTA_PDS;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(pcie_capability_read_dword);
+
+int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val)
+{
+	if (pos & 1)
+		return -EINVAL;
+
+	if (!pcie_capability_reg_implemented(dev, pos))
+		return 0;
+
+	return pci_write_config_word(dev, pci_pcie_cap(dev) + pos, val);
+}
+EXPORT_SYMBOL_GPL(pcie_capability_write_word);
+
+int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val)
+{
+	if (pos & 3)
+		return -EINVAL;
+
+	if (!pcie_capability_reg_implemented(dev, pos))
+		return 0;
+
+	return pci_write_config_dword(dev, pci_pcie_cap(dev) + pos, val);
+}
+EXPORT_SYMBOL_GPL(pcie_capability_write_dword);
+
+int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos,
+				       u16 clear, u16 set)
+{
+	int ret;
+	u16 val;
+
+	ret = pcie_capability_read_word(dev, pos, &val);
+	if (!ret) {
+		val &= ~clear;
+		val |= set;
+		ret = pcie_capability_write_word(dev, pos, val);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(pcie_capability_clear_and_set_word);
+
+int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos,
+					u32 clear, u32 set)
+{
+	int ret;
+	u32 val;
+
+	ret = pcie_capability_read_dword(dev, pos, &val);
+	if (!ret) {
+		val &= ~clear;
+		val |= set;
+		ret = pcie_capability_write_dword(dev, pos, val);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(pcie_capability_clear_and_set_dword);
+#endif
diff --git a/compat/compat-3.8.c b/compat/compat-3.8.c
new file mode 100644
index 0000000..9f5df7d
--- /dev/null
+++ b/compat/compat-3.8.c
@@ -0,0 +1,365 @@
+/*
+ * Copyright (c) 1999 Andreas Gal
+ * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
+ * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
+ * Copyright (c) 2006-2012 Jiri Kosina
+ * Copyright (c) 2012  Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * Compatibility file for Linux wireless for kernels 3.8.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/hid.h>
+#include <linux/module.h>
+#include "hid-ids.h"
+#include <linux/netdevice.h>
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,8))
+void netdev_set_default_ethtool_ops(struct net_device *dev,
+				    const struct ethtool_ops *ops)
+{
+	if (!dev->ethtool_ops)
+		dev->ethtool_ops = ops;
+}
+EXPORT_SYMBOL_GPL(netdev_set_default_ethtool_ops);
+#endif
+
+/* a list of devices that shouldn't be handled by HID core at all */
+static const struct hid_device_id hid_ignore_list[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
+#if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
+#endif
+	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
+	{ }
+};
+
+/**
+ * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
+ *
+ * There are composite devices for which we want to ignore only a certain
+ * interface. This is a list of devices for which only the mouse interface will
+ * be ignored. This allows a dedicated driver to take care of the interface.
+ */
+static const struct hid_device_id hid_mouse_ignore_list[] = {
+	/* appletouch driver */
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
+	{ }
+};
+
+static bool hid_match_one_id(struct hid_device *hdev,
+		const struct hid_device_id *id)
+{
+	return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+		(id->group == HID_GROUP_ANY || id->group == hdev->group) &&
+#endif
+		(id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
+		(id->product == HID_ANY_ID || id->product == hdev->product);
+}
+
+#define hid_match_id LINUX_BACKPORT(hid_match_id)
+static const struct hid_device_id *
+hid_match_id(struct hid_device *hdev, const struct hid_device_id *id)
+{
+	for (; id->bus; id++)
+		if (hid_match_one_id(hdev, id))
+			return id;
+
+	return NULL;
+}
+
+bool hid_ignore(struct hid_device *hdev)
+{
+	if (hdev->quirks & HID_QUIRK_NO_IGNORE)
+		return false;
+	if (hdev->quirks & HID_QUIRK_IGNORE)
+		return true;
+
+	switch (hdev->vendor) {
+	case USB_VENDOR_ID_CODEMERCS:
+		/* ignore all Code Mercenaries IOWarrior devices */
+		if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
+				hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
+			return true;
+		break;
+	case USB_VENDOR_ID_LOGITECH:
+		if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
+				hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
+			return true;
+		/*
+		 * The Keene FM transmitter USB device has the same USB ID as
+		 * the Logitech AudioHub Speaker, but it should ignore the hid.
+		 * Check if the name is that of the Keene device.
+		 * For reference: the name of the AudioHub is
+		 * "HOLTEK  AudioHub Speaker".
+		 */
+		if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
+			!strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
+				return true;
+		break;
+	case USB_VENDOR_ID_SOUNDGRAPH:
+		if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
+		    hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
+			return true;
+		break;
+	case USB_VENDOR_ID_HANWANG:
+		if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
+		    hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
+			return true;
+		break;
+	case USB_VENDOR_ID_JESS:
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+		if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
+				hdev->type == HID_TYPE_USBNONE)
+			return true;
+#else
+		if (hdev->product == USB_DEVICE_ID_JESS_YUREX)
+			return true;
+#endif
+		break;
+	case USB_VENDOR_ID_DWAV:
+		/* These are handled by usbtouchscreen. hdev->type is probably
+		 * HID_TYPE_USBNONE, but we say !HID_TYPE_USBMOUSE to match
+		 * usbtouchscreen. */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+		if ((hdev->product == USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER ||
+		     hdev->product == USB_DEVICE_ID_DWAV_TOUCHCONTROLLER) &&
+		    hdev->type != HID_TYPE_USBMOUSE)
+			return true;
+#else
+		if (hdev->product == USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER ||
+		     hdev->product == USB_DEVICE_ID_DWAV_TOUCHCONTROLLER)
+			return true;
+#endif
+		break;
+	}
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+	if (hdev->type == HID_TYPE_USBMOUSE &&
+			hid_match_id(hdev, hid_mouse_ignore_list))
+		return true;
+#endif
+
+	return !!hid_match_id(hdev, hid_ignore_list);
+}
+EXPORT_SYMBOL_GPL(hid_ignore);
diff --git a/compat/compat-3.9.c b/compat/compat-3.9.c
new file mode 100644
index 0000000..f81fe79
--- /dev/null
+++ b/compat/compat-3.9.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2013  Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * Compatibility file for Linux wireless for kernels 3.9.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/scatterlist.h>
+#include <linux/device.h>
+#include <linux/err.h>
+
+#ifdef __sg_page_iter_next
+
+void __sg_page_iter_start(struct sg_page_iter *piter,
+			  struct scatterlist *sglist, unsigned int nents,
+			  unsigned long pgoffset)
+{
+	piter->__pg_advance = 0;
+	piter->__nents = nents;
+
+	piter->page = NULL;
+	piter->sg = sglist;
+	piter->sg_pgoffset = pgoffset;
+}
+EXPORT_SYMBOL_GPL(__sg_page_iter_start);
+
+static int sg_page_count(struct scatterlist *sg)
+{
+	return PAGE_ALIGN(sg->offset + sg->length) >> PAGE_SHIFT;
+}
+
+bool __sg_page_iter_next(struct sg_page_iter *piter)
+{
+	if (!piter->__nents || !piter->sg)
+		return false;
+
+	piter->sg_pgoffset += piter->__pg_advance;
+	piter->__pg_advance = 1;
+
+	while (piter->sg_pgoffset >= sg_page_count(piter->sg)) {
+		piter->sg_pgoffset -= sg_page_count(piter->sg);
+		piter->sg = sg_next(piter->sg);
+		if (!--piter->__nents || !piter->sg)
+			return false;
+	}
+	piter->page = nth_page(sg_page(piter->sg), piter->sg_pgoffset);
+
+	return true;
+}
+EXPORT_SYMBOL_GPL(__sg_page_iter_next);
+
+void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res)
+{
+	void __iomem *dest_ptr;
+
+	dest_ptr = devm_ioremap_resource(dev, res);
+	if (!dest_ptr)
+		return (void __iomem *)ERR_PTR(-ENOMEM);
+	return dest_ptr;
+}
+EXPORT_SYMBOL_GPL(devm_ioremap_resource);
+
+#endif /* __sg_page_iter_next */
diff --git a/compat/compat_atomic.c b/compat/compat_atomic.c
new file mode 100644
index 0000000..b8565aa
--- /dev/null
+++ b/compat/compat_atomic.c
@@ -0,0 +1,33 @@
+#include <linux/spinlock.h>
+#include <linux/module.h>
+
+#if !((LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)) && (defined(CONFIG_UML) || defined(CONFIG_X86))) && !((LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)) && defined(CONFIG_ARM) && !defined(CONFIG_GENERIC_ATOMIC64))
+
+static DEFINE_SPINLOCK(lock);
+
+long long atomic64_read(const atomic64_t *v)
+{
+    unsigned long flags;
+    long long val;
+
+    spin_lock_irqsave(&lock, flags);
+    val = v->counter;
+    spin_unlock_irqrestore(&lock, flags);
+    return val;
+}
+EXPORT_SYMBOL_GPL(atomic64_read);
+
+long long atomic64_add_return(long long a, atomic64_t *v)
+{
+    unsigned long flags;
+    long long val;
+
+    spin_lock_irqsave(&lock, flags);
+    val = v->counter += a;
+    spin_unlock_irqrestore(&lock, flags);
+    return val;
+}
+EXPORT_SYMBOL_GPL(atomic64_add_return);
+
+#endif
+
diff --git a/compat/compat_firmware_class.c b/compat/compat_firmware_class.c
new file mode 100644
index 0000000..9ea5080
--- /dev/null
+++ b/compat/compat_firmware_class.c
@@ -0,0 +1,759 @@
+/*
+ * firmware_class.c - Multi purpose firmware loading support
+ *
+ * Copyright (c) 2003 Manuel Estrada Sainz
+ *
+ * Please see Documentation/firmware_class/ for more information.
+ *
+ */
+
+#include <linux/capability.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/vmalloc.h>
+#include <linux/interrupt.h>
+#include <linux/bitops.h>
+#include <linux/mutex.h>
+#include <linux/kthread.h>
+#include <linux/highmem.h>
+#include <linux/firmware.h>
+#include <linux/slab.h>
+
+#define backport_firmware_to_dev(obj) container_of(obj, struct device, kobj)
+
+MODULE_AUTHOR("Manuel Estrada Sainz");
+MODULE_DESCRIPTION("Multi purpose firmware loading support");
+MODULE_LICENSE("GPL");
+
+/* Builtin firmware support */
+
+//#ifdef CONFIG_FW_LOADER
+#if 0
+
+extern struct builtin_fw __start_builtin_fw[];
+extern struct builtin_fw __end_builtin_fw[];
+
+static bool fw_get_builtin_firmware(struct firmware *fw, const char *name)
+{
+	struct builtin_fw *b_fw;
+
+	for (b_fw = __start_builtin_fw; b_fw != __end_builtin_fw; b_fw++) {
+		if (strcmp(name, b_fw->name) == 0) {
+			fw->size = b_fw->size;
+			fw->data = b_fw->data;
+			return true;
+		}
+	}
+
+	return false;
+}
+
+static bool fw_is_builtin_firmware(const struct firmware *fw)
+{
+	struct builtin_fw *b_fw;
+
+	for (b_fw = __start_builtin_fw; b_fw != __end_builtin_fw; b_fw++)
+		if (fw->data == b_fw->data)
+			return true;
+
+	return false;
+}
+
+#else /* Module case - no builtin firmware support */
+
+static inline bool fw_get_builtin_firmware(struct firmware *fw, const char *name)
+{
+	return false;
+}
+
+static inline bool fw_is_builtin_firmware(const struct firmware *fw)
+{
+	return false;
+}
+#endif
+
+enum {
+	FW_STATUS_LOADING,
+	FW_STATUS_DONE,
+	FW_STATUS_ABORT,
+};
+
+static int loading_timeout = 60;	/* In seconds */
+
+/* fw_lock could be moved to 'struct firmware_priv' but since it is just
+ * guarding for corner cases a global lock should be OK */
+static DEFINE_MUTEX(fw_lock);
+
+struct firmware_priv {
+	struct completion completion;
+	struct firmware *fw;
+	unsigned long status;
+	struct page **pages;
+	int nr_pages;
+	int page_array_size;
+	struct timer_list timeout;
+	struct device dev;
+	bool nowait;
+	char fw_id[];
+};
+
+static struct firmware_priv *to_firmware_priv(struct device *dev)
+{
+	return container_of(dev, struct firmware_priv, dev);
+}
+
+static void fw_load_abort(struct firmware_priv *fw_priv)
+{
+	set_bit(FW_STATUS_ABORT, &fw_priv->status);
+	wmb();
+	complete(&fw_priv->completion);
+}
+
+static ssize_t firmware_timeout_show(struct class *class,
+				     char *buf)
+{
+	return sprintf(buf, "%d\n", loading_timeout);
+}
+
+/**
+ * firmware_timeout_store - set number of seconds to wait for firmware
+ * @class: device class pointer
+ * @buf: buffer to scan for timeout value
+ * @count: number of bytes in @buf
+ *
+ *	Sets the number of seconds to wait for the firmware.  Once
+ *	this expires an error will be returned to the driver and no
+ *	firmware will be provided.
+ *
+ *	Note: zero means 'wait forever'.
+ **/
+static ssize_t firmware_timeout_store(struct class *class,
+				      const char *buf, size_t count)
+{
+	loading_timeout = simple_strtol(buf, NULL, 10);
+	if (loading_timeout < 0)
+		loading_timeout = 0;
+
+	return count;
+}
+
+static struct class_attribute firmware_class_attrs[] = {
+	__ATTR(timeout, S_IWUSR | S_IRUGO,
+		firmware_timeout_show, firmware_timeout_store),
+	__ATTR_NULL
+};
+
+static void fw_dev_release(struct device *dev)
+{
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
+	int i;
+
+	for (i = 0; i < fw_priv->nr_pages; i++)
+		__free_page(fw_priv->pages[i]);
+	kfree(fw_priv->pages);
+	kfree(fw_priv);
+
+	module_put(THIS_MODULE);
+}
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24))
+static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
+
+	if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->fw_id))
+		return -ENOMEM;
+	if (add_uevent_var(env, "TIMEOUT=%i", loading_timeout))
+		return -ENOMEM;
+	if (add_uevent_var(env, "ASYNC=%d", fw_priv->nowait))
+		return -ENOMEM;
+
+	return 0;
+}
+#else
+static int firmware_uevent(struct device *dev, char **envp,
+			   int num_envp, char *buf, int size)
+{
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
+	int error, len = 0, i = 0;
+
+	error = add_uevent_var(envp, num_envp, &i,
+			       buf, size, &len,
+			       "FIRMWARE=%s", fw_priv->fw_id);
+	if (error)
+		goto exit;
+
+	error = add_uevent_var(envp, num_envp, &i,
+			       buf, size, &len,
+			       "TIMEOUT=%i", loading_timeout);
+	if (error)
+		goto exit;
+	error = add_uevent_var(envp, num_envp, &i,
+			       buf, size, &len,
+			       "ASYNC=%i", fw_priv->nowait);
+	if (error)
+		goto exit;
+
+	return 0;
+exit:
+	envp[i] = NULL;
+	return error;
+}
+#endif
+
+static struct class firmware_class = {
+	.name		= "compat_firmware",
+	.class_attrs	= firmware_class_attrs,
+	.dev_uevent	= firmware_uevent,
+	.dev_release	= fw_dev_release,
+};
+
+static ssize_t firmware_loading_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
+	int loading = test_bit(FW_STATUS_LOADING, &fw_priv->status);
+
+	return sprintf(buf, "%d\n", loading);
+}
+
+static void firmware_free_data(const struct firmware *fw)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+	int i;
+	vunmap(fw->data);
+	if (fw->pages) {
+		for (i = 0; i < PFN_UP(fw->size); i++)
+			__free_page(fw->pages[i]);
+		kfree(fw->pages);
+	}
+#else
+	vunmap(fw->data);
+#endif
+}
+
+/* Some architectures don't have PAGE_KERNEL_RO */
+#ifndef PAGE_KERNEL_RO
+#define PAGE_KERNEL_RO PAGE_KERNEL
+#endif
+/**
+ * firmware_loading_store - set value in the 'loading' control file
+ * @dev: device pointer
+ * @buf: buffer to scan for loading control value
+ * @count: number of bytes in @buf
+ *
+ *	The relevant values are:
+ *
+ *	 1: Start a load, discarding any previous partial load.
+ *	 0: Conclude the load and hand the data to the driver code.
+ *	-1: Conclude the load with an error and discard any written data.
+ **/
+static ssize_t firmware_loading_store(struct device *dev,
+				      struct device_attribute *attr,
+				      const char *buf, size_t count)
+{
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
+	int loading = simple_strtol(buf, NULL, 10);
+	int i;
+
+	switch (loading) {
+	case 1:
+		mutex_lock(&fw_lock);
+		if (!fw_priv->fw) {
+			mutex_unlock(&fw_lock);
+			break;
+		}
+		firmware_free_data(fw_priv->fw);
+		memset(fw_priv->fw, 0, sizeof(struct firmware));
+		/* If the pages are not owned by 'struct firmware' */
+		for (i = 0; i < fw_priv->nr_pages; i++)
+			__free_page(fw_priv->pages[i]);
+		kfree(fw_priv->pages);
+		fw_priv->pages = NULL;
+		fw_priv->page_array_size = 0;
+		fw_priv->nr_pages = 0;
+		set_bit(FW_STATUS_LOADING, &fw_priv->status);
+		mutex_unlock(&fw_lock);
+		break;
+	case 0:
+		if (test_bit(FW_STATUS_LOADING, &fw_priv->status)) {
+			vunmap(fw_priv->fw->data);
+			fw_priv->fw->data = vmap(fw_priv->pages,
+						 fw_priv->nr_pages,
+						 0, PAGE_KERNEL_RO);
+			if (!fw_priv->fw->data) {
+				dev_err(dev, "%s: vmap() failed\n", __func__);
+				goto err;
+			}
+			/* Pages are now owned by 'struct firmware' */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+			fw_priv->fw->pages = fw_priv->pages;
+			fw_priv->pages = NULL;
+#endif
+
+			fw_priv->page_array_size = 0;
+			fw_priv->nr_pages = 0;
+			complete(&fw_priv->completion);
+			clear_bit(FW_STATUS_LOADING, &fw_priv->status);
+			break;
+		}
+		/* fallthrough */
+	default:
+		dev_err(dev, "%s: unexpected value (%d)\n", __func__, loading);
+		/* fallthrough */
+	case -1:
+	err:
+		fw_load_abort(fw_priv);
+		break;
+	}
+
+	return count;
+}
+
+static DEVICE_ATTR(loading, 0644, firmware_loading_show, firmware_loading_store);
+
+#if defined(CONFIG_COMPAT_FIRMWARE_DATA_RW_NEEDS_FILP)
+static ssize_t firmware_data_read(struct file *filp, struct kobject *kobj,
+				  struct bin_attribute *bin_attr,
+				  char *buffer, loff_t offset, size_t count)
+#else
+static ssize_t firmware_data_read(struct kobject *kobj,
+				  struct bin_attribute *bin_attr,
+				  char *buffer, loff_t offset, size_t count)
+#endif
+{
+	struct device *dev = backport_firmware_to_dev(kobj);
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
+	struct firmware *fw;
+	ssize_t ret_count;
+
+	mutex_lock(&fw_lock);
+	fw = fw_priv->fw;
+	if (!fw || test_bit(FW_STATUS_DONE, &fw_priv->status)) {
+		ret_count = -ENODEV;
+		goto out;
+	}
+	if (offset > fw->size) {
+		ret_count = 0;
+		goto out;
+	}
+	if (count > fw->size - offset)
+		count = fw->size - offset;
+
+	ret_count = count;
+
+	while (count) {
+		void *page_data;
+		int page_nr = offset >> PAGE_SHIFT;
+		int page_ofs = offset & (PAGE_SIZE-1);
+		int page_cnt = min_t(size_t, PAGE_SIZE - page_ofs, count);
+
+		page_data = kmap(fw_priv->pages[page_nr]);
+
+		memcpy(buffer, page_data + page_ofs, page_cnt);
+
+		kunmap(fw_priv->pages[page_nr]);
+		buffer += page_cnt;
+		offset += page_cnt;
+		count -= page_cnt;
+	}
+out:
+	mutex_unlock(&fw_lock);
+	return ret_count;
+}
+
+static int fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
+{
+	int pages_needed = ALIGN(min_size, PAGE_SIZE) >> PAGE_SHIFT;
+
+	/* If the array of pages is too small, grow it... */
+	if (fw_priv->page_array_size < pages_needed) {
+		int new_array_size = max(pages_needed,
+					 fw_priv->page_array_size * 2);
+		struct page **new_pages;
+
+		new_pages = kmalloc(new_array_size * sizeof(void *),
+				    GFP_KERNEL);
+		if (!new_pages) {
+			fw_load_abort(fw_priv);
+			return -ENOMEM;
+		}
+		memcpy(new_pages, fw_priv->pages,
+		       fw_priv->page_array_size * sizeof(void *));
+		memset(&new_pages[fw_priv->page_array_size], 0, sizeof(void *) *
+		       (new_array_size - fw_priv->page_array_size));
+		kfree(fw_priv->pages);
+		fw_priv->pages = new_pages;
+		fw_priv->page_array_size = new_array_size;
+	}
+
+	while (fw_priv->nr_pages < pages_needed) {
+		fw_priv->pages[fw_priv->nr_pages] =
+			alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
+
+		if (!fw_priv->pages[fw_priv->nr_pages]) {
+			fw_load_abort(fw_priv);
+			return -ENOMEM;
+		}
+		fw_priv->nr_pages++;
+	}
+	return 0;
+}
+
+/**
+ * firmware_data_write - write method for firmware
+ * @kobj: kobject for the device
+ * @bin_attr: bin_attr structure
+ * @buffer: buffer being written
+ * @offset: buffer offset for write in total data store area
+ * @count: buffer size
+ *
+ *	Data written to the 'data' attribute will be later handed to
+ *	the driver as a firmware image.
+ **/
+#if defined(CONFIG_COMPAT_FIRMWARE_DATA_RW_NEEDS_FILP)
+static ssize_t firmware_data_write(struct file *filp, struct kobject *kobj,
+				   struct bin_attribute *bin_attr,
+				   char *buffer, loff_t offset, size_t count)
+#else
+static ssize_t firmware_data_write(struct kobject *kobj,
+				   struct bin_attribute *bin_attr,
+				   char *buffer, loff_t offset, size_t count)
+#endif
+{
+	struct device *dev = backport_firmware_to_dev(kobj);
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
+	struct firmware *fw;
+	ssize_t retval;
+
+	if (!capable(CAP_SYS_RAWIO))
+		return -EPERM;
+
+	mutex_lock(&fw_lock);
+	fw = fw_priv->fw;
+	if (!fw || test_bit(FW_STATUS_DONE, &fw_priv->status)) {
+		retval = -ENODEV;
+		goto out;
+	}
+	retval = fw_realloc_buffer(fw_priv, offset + count);
+	if (retval)
+		goto out;
+
+	retval = count;
+
+	while (count) {
+		void *page_data;
+		int page_nr = offset >> PAGE_SHIFT;
+		int page_ofs = offset & (PAGE_SIZE - 1);
+		int page_cnt = min_t(size_t, PAGE_SIZE - page_ofs, count);
+
+		page_data = kmap(fw_priv->pages[page_nr]);
+
+		memcpy(page_data + page_ofs, buffer, page_cnt);
+
+		kunmap(fw_priv->pages[page_nr]);
+		buffer += page_cnt;
+		offset += page_cnt;
+		count -= page_cnt;
+	}
+
+	fw->size = max_t(size_t, offset, fw->size);
+out:
+	mutex_unlock(&fw_lock);
+	return retval;
+}
+
+static struct bin_attribute firmware_attr_data = {
+	.attr = { .name = "data", .mode = 0644 },
+	.size = 0,
+	.read = firmware_data_read,
+	.write = firmware_data_write,
+};
+
+static void firmware_class_timeout(u_long data)
+{
+	struct firmware_priv *fw_priv = (struct firmware_priv *) data;
+
+	fw_load_abort(fw_priv);
+}
+
+static struct firmware_priv *
+fw_create_instance(struct firmware *firmware, const char *fw_name,
+		   struct device *device, bool uevent, bool nowait)
+{
+	struct firmware_priv *fw_priv;
+	struct device *f_dev;
+	int error;
+
+	fw_priv = kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL);
+	if (!fw_priv) {
+		dev_err(device, "%s: kmalloc failed\n", __func__);
+		error = -ENOMEM;
+		goto err_out;
+	}
+
+	fw_priv->fw = firmware;
+	fw_priv->nowait = nowait;
+	strcpy(fw_priv->fw_id, fw_name);
+	init_completion(&fw_priv->completion);
+	setup_timer(&fw_priv->timeout,
+		    firmware_class_timeout, (u_long) fw_priv);
+
+	f_dev = &fw_priv->dev;
+
+	device_initialize(f_dev);
+	dev_set_name(f_dev, "%s", dev_name(device));
+	f_dev->parent = device;
+	f_dev->class = &firmware_class;
+
+	dev_set_uevent_suppress(f_dev, true);
+
+	/* Need to pin this module until class device is destroyed */
+	__module_get(THIS_MODULE);
+
+	error = device_add(f_dev);
+	if (error) {
+		dev_err(device, "%s: device_register failed\n", __func__);
+		goto err_put_dev;
+	}
+
+	error = device_create_bin_file(f_dev, &firmware_attr_data);
+	if (error) {
+		dev_err(device, "%s: sysfs_create_bin_file failed\n", __func__);
+		goto err_del_dev;
+	}
+
+	error = device_create_file(f_dev, &dev_attr_loading);
+	if (error) {
+		dev_err(device, "%s: device_create_file failed\n", __func__);
+		goto err_del_bin_attr;
+	}
+
+	if (uevent)
+		dev_set_uevent_suppress(f_dev, false);
+
+	return fw_priv;
+
+err_del_bin_attr:
+	device_remove_bin_file(f_dev, &firmware_attr_data);
+err_del_dev:
+	device_del(f_dev);
+err_put_dev:
+	put_device(f_dev);
+err_out:
+	return ERR_PTR(error);
+}
+
+static void fw_destroy_instance(struct firmware_priv *fw_priv)
+{
+	struct device *f_dev = &fw_priv->dev;
+
+	device_remove_file(f_dev, &dev_attr_loading);
+	device_remove_bin_file(f_dev, &firmware_attr_data);
+	device_unregister(f_dev);
+}
+
+static int _request_firmware(const struct firmware **firmware_p,
+			     const char *name, struct device *device,
+			     bool uevent, bool nowait)
+{
+	struct firmware_priv *fw_priv;
+	struct firmware *firmware;
+	int retval = 0;
+
+	if (!firmware_p)
+		return -EINVAL;
+
+	*firmware_p = firmware = kzalloc(sizeof(*firmware), GFP_KERNEL);
+	if (!firmware) {
+		dev_err(device, "%s: kmalloc(struct firmware) failed\n",
+			__func__);
+		retval = -ENOMEM;
+		goto out;
+	}
+
+	if (fw_get_builtin_firmware(firmware, name)) {
+		dev_dbg(device, "firmware: using built-in firmware %s\n", name);
+		return 0;
+	}
+
+	if (uevent)
+		dev_dbg(device, "firmware: requesting %s\n", name);
+
+	fw_priv = fw_create_instance(firmware, name, device, uevent, nowait);
+	if (IS_ERR(fw_priv)) {
+		retval = PTR_ERR(fw_priv);
+		goto out;
+	}
+
+	if (uevent) {
+		if (loading_timeout > 0)
+			mod_timer(&fw_priv->timeout,
+				  round_jiffies_up(jiffies +
+						   loading_timeout * HZ));
+
+		kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
+	}
+
+	wait_for_completion(&fw_priv->completion);
+
+	set_bit(FW_STATUS_DONE, &fw_priv->status);
+	del_timer_sync(&fw_priv->timeout);
+
+	mutex_lock(&fw_lock);
+	if (!fw_priv->fw->size || test_bit(FW_STATUS_ABORT, &fw_priv->status))
+		retval = -ENOENT;
+	fw_priv->fw = NULL;
+	mutex_unlock(&fw_lock);
+
+	fw_destroy_instance(fw_priv);
+
+out:
+	if (retval) {
+		release_firmware(firmware);
+		*firmware_p = NULL;
+	}
+
+	return retval;
+}
+
+/**
+ * request_firmware: - send firmware request and wait for it
+ * @firmware_p: pointer to firmware image
+ * @name: name of firmware file
+ * @device: device for which firmware is being loaded
+ *
+ *      @firmware_p will be used to return a firmware image by the name
+ *      of @name for device @device.
+ *
+ *      Should be called from user context where sleeping is allowed.
+ *
+ *      @name will be used as $FIRMWARE in the uevent environment and
+ *      should be distinctive enough not to be confused with any other
+ *      firmware image for this or any other device.
+ **/
+int
+request_firmware(const struct firmware **firmware_p, const char *name,
+                 struct device *device)
+{
+        int uevent = 1;
+        return _request_firmware(firmware_p, name, device, uevent, false);
+}
+
+/**
+ * release_firmware: - release the resource associated with a firmware image
+ * @fw: firmware resource to release
+ **/
+void release_firmware(const struct firmware *fw)
+{
+	if (fw) {
+		if (!fw_is_builtin_firmware(fw))
+			firmware_free_data(fw);
+		kfree(fw);
+	}
+}
+
+/* Async support */
+struct firmware_work {
+	struct work_struct work;
+	struct module *module;
+	const char *name;
+	struct device *device;
+	void *context;
+	void (*cont)(const struct firmware *fw, void *context);
+	int uevent;
+};
+
+static int request_firmware_work_func(void *arg)
+{
+	struct firmware_work *fw_work = arg;
+	const struct firmware *fw;
+	int ret;
+
+	if (!arg) {
+		WARN_ON(1);
+		return 0;
+	}
+
+	ret = _request_firmware(&fw, fw_work->name, fw_work->device,
+				fw_work->uevent, true);
+	fw_work->cont(fw, fw_work->context);
+
+	module_put(fw_work->module);
+	kfree(fw_work);
+
+	return ret;
+}
+
+/**
+ * request_firmware_nowait - asynchronous version of request_firmware
+ * @module: module requesting the firmware
+ * @uevent: sends uevent to copy the firmware image if this flag
+ *	is non-zero else the firmware copy must be done manually.
+ * @name: name of firmware file
+ * @device: device for which firmware is being loaded
+ * @gfp: allocation flags
+ * @context: will be passed over to @cont, and
+ *	@fw may be %NULL if firmware request fails.
+ * @cont: function will be called asynchronously when the firmware
+ *	request is over.
+ *
+ *	Asynchronous variant of request_firmware() for user contexts where
+ *	it is not possible to sleep for long time. It can't be called
+ *	in atomic contexts.
+ **/
+int
+request_firmware_nowait(
+	struct module *module, int uevent,
+	const char *name, struct device *device, gfp_t gfp, void *context,
+	void (*cont)(const struct firmware *fw, void *context))
+{
+	struct task_struct *task;
+	struct firmware_work *fw_work;
+
+	fw_work = kzalloc(sizeof (struct firmware_work), gfp);
+	if (!fw_work)
+		return -ENOMEM;
+
+	fw_work->module = module;
+	fw_work->name = name;
+	fw_work->device = device;
+	fw_work->context = context;
+	fw_work->cont = cont;
+	fw_work->uevent = uevent;
+
+	if (!try_module_get(module)) {
+		kfree(fw_work);
+		return -EFAULT;
+	}
+
+	task = kthread_run(request_firmware_work_func, fw_work,
+			    "firmware/%s", name);
+	if (IS_ERR(task)) {
+		fw_work->cont(NULL, fw_work->context);
+		module_put(fw_work->module);
+		kfree(fw_work);
+		return PTR_ERR(task);
+	}
+
+	return 0;
+}
+
+static int __init firmware_class_init(void)
+{
+	return class_register(&firmware_class);
+}
+
+static void __exit firmware_class_exit(void)
+{
+	class_unregister(&firmware_class);
+}
+
+fs_initcall(firmware_class_init);
+module_exit(firmware_class_exit);
+
+EXPORT_SYMBOL_GPL(release_firmware);
+EXPORT_SYMBOL_GPL(request_firmware);
+EXPORT_SYMBOL_GPL(request_firmware_nowait);
diff --git a/compat/cordic.c b/compat/cordic.c
new file mode 100644
index 0000000..a6340b6
--- /dev/null
+++ b/compat/cordic.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2011 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <linux/module.h>
+#include <linux/cordic.h>
+
+#define CORDIC_ANGLE_GEN	39797
+#define CORDIC_PRECISION_SHIFT	16
+#define	CORDIC_NUM_ITER		(CORDIC_PRECISION_SHIFT + 2)
+
+#define	FIXED(X)	((s32)((X) << CORDIC_PRECISION_SHIFT))
+#define	FLOAT(X)	(((X) >= 0) \
+		? ((((X) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1) \
+		: -((((-(X)) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1))
+
+static const s32 arctan_table[] = {
+	2949120,
+	1740967,
+	919879,
+	466945,
+	234379,
+	117304,
+	58666,
+	29335,
+	14668,
+	7334,
+	3667,
+	1833,
+	917,
+	458,
+	229,
+	115,
+	57,
+	29
+};
+
+/*
+ * cordic_calc_iq() - calculates the i/q coordinate for given angle
+ *
+ * theta: angle in degrees for which i/q coordinate is to be calculated
+ * coord: function output parameter holding the i/q coordinate
+ */
+struct cordic_iq cordic_calc_iq(s32 theta)
+{
+	struct cordic_iq coord;
+	s32 angle, valtmp;
+	unsigned iter;
+	int signx = 1;
+	int signtheta;
+
+	coord.i = CORDIC_ANGLE_GEN;
+	coord.q = 0;
+	angle = 0;
+
+	theta = FIXED(theta);
+	signtheta = (theta < 0) ? -1 : 1;
+	theta = ((theta + FIXED(180) * signtheta) % FIXED(360)) -
+		FIXED(180) * signtheta;
+
+	if (FLOAT(theta) > 90) {
+		theta -= FIXED(180);
+		signx = -1;
+	} else if (FLOAT(theta) < -90) {
+		theta += FIXED(180);
+		signx = -1;
+	}
+
+	for (iter = 0; iter < CORDIC_NUM_ITER; iter++) {
+		if (theta > angle) {
+			valtmp = coord.i - (coord.q >> iter);
+			coord.q += (coord.i >> iter);
+			angle += arctan_table[iter];
+		} else {
+			valtmp = coord.i + (coord.q >> iter);
+			coord.q -= (coord.i >> iter);
+			angle -= arctan_table[iter];
+		}
+		coord.i = valtmp;
+	}
+
+	coord.i *= signx;
+	coord.q *= signx;
+	return coord;
+}
+EXPORT_SYMBOL_GPL(cordic_calc_iq);
+
+MODULE_DESCRIPTION("Cordic functions");
+MODULE_AUTHOR("Broadcom Corporation");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/compat/crc8.c b/compat/crc8.c
new file mode 100644
index 0000000..5878171
--- /dev/null
+++ b/compat/crc8.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2011 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#undef pr_fmt
+#define pr_fmt(fmt)		KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/crc8.h>
+#include <linux/printk.h>
+
+/*
+ * crc8_populate_msb - fill crc table for given polynomial in reverse bit order.
+ *
+ * table:	table to be filled.
+ * polynomial:	polynomial for which table is to be filled.
+ */
+void crc8_populate_msb(u8 table[CRC8_TABLE_SIZE], u8 polynomial)
+{
+	int i, j;
+	const u8 msbit = 0x80;
+	u8 t = msbit;
+
+	table[0] = 0;
+
+	for (i = 1; i < CRC8_TABLE_SIZE; i *= 2) {
+		t = (t << 1) ^ (t & msbit ? polynomial : 0);
+		for (j = 0; j < i; j++)
+			table[i+j] = table[j] ^ t;
+	}
+}
+EXPORT_SYMBOL_GPL(crc8_populate_msb);
+
+/*
+ * crc8_populate_lsb - fill crc table for given polynomial in regular bit order.
+ *
+ * table:	table to be filled.
+ * polynomial:	polynomial for which table is to be filled.
+ */
+void crc8_populate_lsb(u8 table[CRC8_TABLE_SIZE], u8 polynomial)
+{
+	int i, j;
+	u8 t = 1;
+
+	table[0] = 0;
+
+	for (i = (CRC8_TABLE_SIZE >> 1); i; i >>= 1) {
+		t = (t >> 1) ^ (t & 1 ? polynomial : 0);
+		for (j = 0; j < CRC8_TABLE_SIZE; j += 2*i)
+			table[i+j] = table[j] ^ t;
+	}
+}
+EXPORT_SYMBOL_GPL(crc8_populate_lsb);
+
+/*
+ * crc8 - calculate a crc8 over the given input data.
+ *
+ * table: crc table used for calculation.
+ * pdata: pointer to data buffer.
+ * nbytes: number of bytes in data buffer.
+ * crc:	previous returned crc8 value.
+ */
+u8 crc8(const u8 table[CRC8_TABLE_SIZE], u8 *pdata, size_t nbytes, u8 crc)
+{
+	/* loop over the buffer data */
+	while (nbytes-- > 0)
+		crc = table[(crc ^ *pdata++) & 0xff];
+
+	return crc;
+}
+EXPORT_SYMBOL_GPL(crc8);
+
+MODULE_DESCRIPTION("CRC8 (by Williams, Ross N.) function");
+MODULE_AUTHOR("Broadcom Corporation");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/compat/dma-shared-helpers.c b/compat/dma-shared-helpers.c
new file mode 100644
index 0000000..e09dd6b
--- /dev/null
+++ b/compat/dma-shared-helpers.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2013  Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * Backport compatibility file for Linux for some DMA helpers
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/scatterlist.h>
+#include <linux/dma-attrs.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(3,6,0)
+#include <linux/dma-direction.h>
+#include <linux/dma-mapping.h>
+#include <asm/dma-mapping.h>
+#endif /* LINUX_VERSION_CODE <= KERNEL_VERSION(3,6,0) */
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0) */
+
+/*
+ * Create scatter-list for the already allocated DMA buffer.
+ */
+int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt,
+		 void *cpu_addr, dma_addr_t handle, size_t size)
+{
+	struct page *page = virt_to_page(cpu_addr);
+	int ret;
+
+	ret = sg_alloc_table(sgt, 1, GFP_KERNEL);
+	if (unlikely(ret))
+		return ret;
+
+	sg_set_page(sgt->sgl, page, PAGE_ALIGN(size), 0);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dma_common_get_sgtable);
diff --git a/compat/drivers-base-dma-buf.c b/compat/drivers-base-dma-buf.c
new file mode 100644
index 0000000..a5b903b
--- /dev/null
+++ b/compat/drivers-base-dma-buf.c
@@ -0,0 +1,735 @@
+/*
+ * Framework for buffer objects that can be shared across devices/subsystems.
+ *
+ * Copyright(C) 2011 Linaro Limited. All rights reserved.
+ * Author: Sumit Semwal <sumit.semwal@ti.com>
+ *
+ * Many thanks to linaro-mm-sig list, and specially
+ * Arnd Bergmann <arnd@arndb.de>, Rob Clark <rob@ti.com> and
+ * Daniel Vetter <daniel@ffwll.ch> for their support in creation and
+ * refining of this idea.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/fs.h>
+#include <linux/slab.h>
+#include <linux/dma-buf.h>
+#include <linux/anon_inodes.h>
+#include <linux/export.h>
+#include <linux/file.h>
+#include <linux/fdtable.h>
+#include <linux/bitops.h>
+#include <linux/sched.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+static inline int is_dma_buf_file(struct file *);
+
+struct dma_buf_list {
+	struct list_head head;
+	struct mutex lock;
+};
+
+static struct dma_buf_list db_list;
+
+static int dma_buf_release(struct inode *inode, struct file *file)
+{
+	struct dma_buf *dmabuf;
+
+	if (!is_dma_buf_file(file))
+		return -EINVAL;
+
+	dmabuf = file->private_data;
+
+	BUG_ON(dmabuf->vmapping_counter);
+
+	dmabuf->ops->release(dmabuf);
+
+	mutex_lock(&db_list.lock);
+	list_del(&dmabuf->list_node);
+	mutex_unlock(&db_list.lock);
+
+	kfree(dmabuf);
+	return 0;
+}
+
+static int dma_buf_mmap_internal(struct file *file, struct vm_area_struct *vma)
+{
+	struct dma_buf *dmabuf;
+
+	if (!is_dma_buf_file(file))
+		return -EINVAL;
+
+	dmabuf = file->private_data;
+
+	/* check for overflowing the buffer's size */
+	if (vma->vm_pgoff + ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) >
+	    dmabuf->size >> PAGE_SHIFT)
+		return -EINVAL;
+
+	return dmabuf->ops->mmap(dmabuf, vma);
+}
+
+static const struct file_operations dma_buf_fops = {
+	.release	= dma_buf_release,
+	.mmap		= dma_buf_mmap_internal,
+};
+
+/*
+ * is_dma_buf_file - Check if struct file* is associated with dma_buf
+ */
+static inline int is_dma_buf_file(struct file *file)
+{
+	return file->f_op == &dma_buf_fops;
+}
+
+/**
+ * dma_buf_export_named - Creates a new dma_buf, and associates an anon file
+ * with this buffer, so it can be exported.
+ * Also connect the allocator specific data and ops to the buffer.
+ * Additionally, provide a name string for exporter; useful in debugging.
+ *
+ * @priv:	[in]	Attach private data of allocator to this buffer
+ * @ops:	[in]	Attach allocator-defined dma buf ops to the new buffer.
+ * @size:	[in]	Size of the buffer
+ * @flags:	[in]	mode flags for the file.
+ * @exp_name:	[in]	name of the exporting module - useful for debugging.
+ *
+ * Returns, on success, a newly created dma_buf object, which wraps the
+ * supplied private data and operations for dma_buf_ops. On either missing
+ * ops, or error in allocating struct dma_buf, will return negative error.
+ *
+ */
+struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops,
+				size_t size, int flags, const char *exp_name)
+{
+	struct dma_buf *dmabuf;
+	struct file *file;
+
+	if (WARN_ON(!priv || !ops
+			  || !ops->map_dma_buf
+			  || !ops->unmap_dma_buf
+			  || !ops->release
+			  || !ops->kmap_atomic
+			  || !ops->kmap
+			  || !ops->mmap)) {
+		return ERR_PTR(-EINVAL);
+	}
+
+	dmabuf = kzalloc(sizeof(struct dma_buf), GFP_KERNEL);
+	if (dmabuf == NULL)
+		return ERR_PTR(-ENOMEM);
+
+	dmabuf->priv = priv;
+	dmabuf->ops = ops;
+	dmabuf->size = size;
+	dmabuf->exp_name = exp_name;
+
+	file = anon_inode_getfile("dmabuf", &dma_buf_fops, dmabuf, flags);
+
+	dmabuf->file = file;
+
+	mutex_init(&dmabuf->lock);
+	INIT_LIST_HEAD(&dmabuf->attachments);
+
+	mutex_lock(&db_list.lock);
+	list_add(&dmabuf->list_node, &db_list.head);
+	mutex_unlock(&db_list.lock);
+
+	return dmabuf;
+}
+EXPORT_SYMBOL_GPL(dma_buf_export_named);
+
+static void dma_buf_fd_set_flag(int fd, int flags)
+{
+	struct fdtable *fdt;
+	struct files_struct *files = current->files;
+
+	spin_lock(&files->file_lock);
+	fdt = files_fdtable(files);
+	if (flags & O_CLOEXEC)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
+		__set_bit(fd, fdt->close_on_exec);
+#else
+		FD_SET(fd, fdt->close_on_exec);
+#endif
+	else
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
+		__clear_bit(fd, fdt->close_on_exec);
+#else
+		FD_CLR(fd, fdt->close_on_exec);
+#endif
+	spin_unlock(&files->file_lock);
+}
+
+/**
+ * dma_buf_fd - returns a file descriptor for the given dma_buf
+ * @dmabuf:	[in]	pointer to dma_buf for which fd is required.
+ * @flags:      [in]    flags to give to fd
+ *
+ * On success, returns an associated 'fd'. Else, returns error.
+ */
+int dma_buf_fd(struct dma_buf *dmabuf, int flags)
+{
+	int fd;
+
+	if (!dmabuf || !dmabuf->file)
+		return -EINVAL;
+
+	fd = get_unused_fd();
+	if (fd < 0)
+		return fd;
+	dma_buf_fd_set_flag(fd, flags);
+
+	fd_install(fd, dmabuf->file);
+
+	return fd;
+}
+EXPORT_SYMBOL_GPL(dma_buf_fd);
+
+/**
+ * dma_buf_get - returns the dma_buf structure related to an fd
+ * @fd:	[in]	fd associated with the dma_buf to be returned
+ *
+ * On success, returns the dma_buf structure associated with an fd; uses
+ * file's refcounting done by fget to increase refcount. returns ERR_PTR
+ * otherwise.
+ */
+struct dma_buf *dma_buf_get(int fd)
+{
+	struct file *file;
+
+	file = fget(fd);
+
+	if (!file)
+		return ERR_PTR(-EBADF);
+
+	if (!is_dma_buf_file(file)) {
+		fput(file);
+		return ERR_PTR(-EINVAL);
+	}
+
+	return file->private_data;
+}
+EXPORT_SYMBOL_GPL(dma_buf_get);
+
+/**
+ * dma_buf_put - decreases refcount of the buffer
+ * @dmabuf:	[in]	buffer to reduce refcount of
+ *
+ * Uses file's refcounting done implicitly by fput()
+ */
+void dma_buf_put(struct dma_buf *dmabuf)
+{
+	if (WARN_ON(!dmabuf || !dmabuf->file))
+		return;
+
+	fput(dmabuf->file);
+}
+EXPORT_SYMBOL_GPL(dma_buf_put);
+
+/**
+ * dma_buf_attach - Add the device to dma_buf's attachments list; optionally,
+ * calls attach() of dma_buf_ops to allow device-specific attach functionality
+ * @dmabuf:	[in]	buffer to attach device to.
+ * @dev:	[in]	device to be attached.
+ *
+ * Returns struct dma_buf_attachment * for this attachment; may return negative
+ * error codes.
+ *
+ */
+struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf,
+					  struct device *dev)
+{
+	struct dma_buf_attachment *attach;
+	int ret;
+
+	if (WARN_ON(!dmabuf || !dev))
+		return ERR_PTR(-EINVAL);
+
+	attach = kzalloc(sizeof(struct dma_buf_attachment), GFP_KERNEL);
+	if (attach == NULL)
+		return ERR_PTR(-ENOMEM);
+
+	attach->dev = dev;
+	attach->dmabuf = dmabuf;
+
+	mutex_lock(&dmabuf->lock);
+
+	if (dmabuf->ops->attach) {
+		ret = dmabuf->ops->attach(dmabuf, dev, attach);
+		if (ret)
+			goto err_attach;
+	}
+	list_add(&attach->node, &dmabuf->attachments);
+
+	mutex_unlock(&dmabuf->lock);
+	return attach;
+
+err_attach:
+	kfree(attach);
+	mutex_unlock(&dmabuf->lock);
+	return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(dma_buf_attach);
+
+/**
+ * dma_buf_detach - Remove the given attachment from dmabuf's attachments list;
+ * optionally calls detach() of dma_buf_ops for device-specific detach
+ * @dmabuf:	[in]	buffer to detach from.
+ * @attach:	[in]	attachment to be detached; is free'd after this call.
+ *
+ */
+void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach)
+{
+	if (WARN_ON(!dmabuf || !attach))
+		return;
+
+	mutex_lock(&dmabuf->lock);
+	list_del(&attach->node);
+	if (dmabuf->ops->detach)
+		dmabuf->ops->detach(dmabuf, attach);
+
+	mutex_unlock(&dmabuf->lock);
+	kfree(attach);
+}
+EXPORT_SYMBOL_GPL(dma_buf_detach);
+
+/**
+ * dma_buf_map_attachment - Returns the scatterlist table of the attachment;
+ * mapped into _device_ address space. Is a wrapper for map_dma_buf() of the
+ * dma_buf_ops.
+ * @attach:	[in]	attachment whose scatterlist is to be returned
+ * @direction:	[in]	direction of DMA transfer
+ *
+ * Returns sg_table containing the scatterlist to be returned; may return NULL
+ * or ERR_PTR.
+ *
+ */
+struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
+					enum dma_data_direction direction)
+{
+	struct sg_table *sg_table = ERR_PTR(-EINVAL);
+
+	might_sleep();
+
+	if (WARN_ON(!attach || !attach->dmabuf))
+		return ERR_PTR(-EINVAL);
+
+	sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
+
+	return sg_table;
+}
+EXPORT_SYMBOL_GPL(dma_buf_map_attachment);
+
+/**
+ * dma_buf_unmap_attachment - unmaps and decreases usecount of the buffer;might
+ * deallocate the scatterlist associated. Is a wrapper for unmap_dma_buf() of
+ * dma_buf_ops.
+ * @attach:	[in]	attachment to unmap buffer from
+ * @sg_table:	[in]	scatterlist info of the buffer to unmap
+ * @direction:  [in]    direction of DMA transfer
+ *
+ */
+void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
+				struct sg_table *sg_table,
+				enum dma_data_direction direction)
+{
+	might_sleep();
+
+	if (WARN_ON(!attach || !attach->dmabuf || !sg_table))
+		return;
+
+	attach->dmabuf->ops->unmap_dma_buf(attach, sg_table,
+						direction);
+}
+EXPORT_SYMBOL_GPL(dma_buf_unmap_attachment);
+
+
+/**
+ * dma_buf_begin_cpu_access - Must be called before accessing a dma_buf from the
+ * cpu in the kernel context. Calls begin_cpu_access to allow exporter-specific
+ * preparations. Coherency is only guaranteed in the specified range for the
+ * specified access direction.
+ * @dmabuf:	[in]	buffer to prepare cpu access for.
+ * @start:	[in]	start of range for cpu access.
+ * @len:	[in]	length of range for cpu access.
+ * @direction:	[in]	length of range for cpu access.
+ *
+ * Can return negative error values, returns 0 on success.
+ */
+int dma_buf_begin_cpu_access(struct dma_buf *dmabuf, size_t start, size_t len,
+			     enum dma_data_direction direction)
+{
+	int ret = 0;
+
+	if (WARN_ON(!dmabuf))
+		return -EINVAL;
+
+	if (dmabuf->ops->begin_cpu_access)
+		ret = dmabuf->ops->begin_cpu_access(dmabuf, start, len, direction);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(dma_buf_begin_cpu_access);
+
+/**
+ * dma_buf_end_cpu_access - Must be called after accessing a dma_buf from the
+ * cpu in the kernel context. Calls end_cpu_access to allow exporter-specific
+ * actions. Coherency is only guaranteed in the specified range for the
+ * specified access direction.
+ * @dmabuf:	[in]	buffer to complete cpu access for.
+ * @start:	[in]	start of range for cpu access.
+ * @len:	[in]	length of range for cpu access.
+ * @direction:	[in]	length of range for cpu access.
+ *
+ * This call must always succeed.
+ */
+void dma_buf_end_cpu_access(struct dma_buf *dmabuf, size_t start, size_t len,
+			    enum dma_data_direction direction)
+{
+	WARN_ON(!dmabuf);
+
+	if (dmabuf->ops->end_cpu_access)
+		dmabuf->ops->end_cpu_access(dmabuf, start, len, direction);
+}
+EXPORT_SYMBOL_GPL(dma_buf_end_cpu_access);
+
+/**
+ * dma_buf_kmap_atomic - Map a page of the buffer object into kernel address
+ * space. The same restrictions as for kmap_atomic and friends apply.
+ * @dmabuf:	[in]	buffer to map page from.
+ * @page_num:	[in]	page in PAGE_SIZE units to map.
+ *
+ * This call must always succeed, any necessary preparations that might fail
+ * need to be done in begin_cpu_access.
+ */
+void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
+{
+	WARN_ON(!dmabuf);
+
+	return dmabuf->ops->kmap_atomic(dmabuf, page_num);
+}
+EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
+
+/**
+ * dma_buf_kunmap_atomic - Unmap a page obtained by dma_buf_kmap_atomic.
+ * @dmabuf:	[in]	buffer to unmap page from.
+ * @page_num:	[in]	page in PAGE_SIZE units to unmap.
+ * @vaddr:	[in]	kernel space pointer obtained from dma_buf_kmap_atomic.
+ *
+ * This call must always succeed.
+ */
+void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
+			   void *vaddr)
+{
+	WARN_ON(!dmabuf);
+
+	if (dmabuf->ops->kunmap_atomic)
+		dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
+}
+EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
+
+/**
+ * dma_buf_kmap - Map a page of the buffer object into kernel address space. The
+ * same restrictions as for kmap and friends apply.
+ * @dmabuf:	[in]	buffer to map page from.
+ * @page_num:	[in]	page in PAGE_SIZE units to map.
+ *
+ * This call must always succeed, any necessary preparations that might fail
+ * need to be done in begin_cpu_access.
+ */
+void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long page_num)
+{
+	WARN_ON(!dmabuf);
+
+	return dmabuf->ops->kmap(dmabuf, page_num);
+}
+EXPORT_SYMBOL_GPL(dma_buf_kmap);
+
+/**
+ * dma_buf_kunmap - Unmap a page obtained by dma_buf_kmap.
+ * @dmabuf:	[in]	buffer to unmap page from.
+ * @page_num:	[in]	page in PAGE_SIZE units to unmap.
+ * @vaddr:	[in]	kernel space pointer obtained from dma_buf_kmap.
+ *
+ * This call must always succeed.
+ */
+void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long page_num,
+		    void *vaddr)
+{
+	WARN_ON(!dmabuf);
+
+	if (dmabuf->ops->kunmap)
+		dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
+}
+EXPORT_SYMBOL_GPL(dma_buf_kunmap);
+
+
+/**
+ * dma_buf_mmap - Setup up a userspace mmap with the given vma
+ * @dmabuf:	[in]	buffer that should back the vma
+ * @vma:	[in]	vma for the mmap
+ * @pgoff:	[in]	offset in pages where this mmap should start within the
+ * 			dma-buf buffer.
+ *
+ * This function adjusts the passed in vma so that it points at the file of the
+ * dma_buf operation. It alsog adjusts the starting pgoff and does bounds
+ * checking on the size of the vma. Then it calls the exporters mmap function to
+ * set up the mapping.
+ *
+ * Can return negative error values, returns 0 on success.
+ */
+int dma_buf_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma,
+		 unsigned long pgoff)
+{
+	struct file *oldfile;
+	int ret;
+
+	if (WARN_ON(!dmabuf || !vma))
+		return -EINVAL;
+
+	/* check for offset overflow */
+	if (pgoff + ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) < pgoff)
+		return -EOVERFLOW;
+
+	/* check for overflowing the buffer's size */
+	if (pgoff + ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) >
+	    dmabuf->size >> PAGE_SHIFT)
+		return -EINVAL;
+
+	/* readjust the vma */
+	get_file(dmabuf->file);
+	oldfile = vma->vm_file;
+	vma->vm_file = dmabuf->file;
+	vma->vm_pgoff = pgoff;
+
+	ret = dmabuf->ops->mmap(dmabuf, vma);
+	if (ret) {
+		/* restore old parameters on failure */
+		vma->vm_file = oldfile;
+		fput(dmabuf->file);
+	} else {
+		if (oldfile)
+			fput(oldfile);
+	}
+	return ret;
+
+}
+EXPORT_SYMBOL_GPL(dma_buf_mmap);
+
+/**
+ * dma_buf_vmap - Create virtual mapping for the buffer object into kernel
+ * address space. Same restrictions as for vmap and friends apply.
+ * @dmabuf:	[in]	buffer to vmap
+ *
+ * This call may fail due to lack of virtual mapping address space.
+ * These calls are optional in drivers. The intended use for them
+ * is for mapping objects linear in kernel space for high use objects.
+ * Please attempt to use kmap/kunmap before thinking about these interfaces.
+ */
+void *dma_buf_vmap(struct dma_buf *dmabuf)
+{
+	void *ptr;
+
+	if (WARN_ON(!dmabuf))
+		return NULL;
+
+	if (!dmabuf->ops->vmap)
+		return NULL;
+
+	mutex_lock(&dmabuf->lock);
+	if (dmabuf->vmapping_counter) {
+		dmabuf->vmapping_counter++;
+		BUG_ON(!dmabuf->vmap_ptr);
+		ptr = dmabuf->vmap_ptr;
+		goto out_unlock;
+	}
+
+	BUG_ON(dmabuf->vmap_ptr);
+
+	ptr = dmabuf->ops->vmap(dmabuf);
+	if (IS_ERR_OR_NULL(ptr))
+		goto out_unlock;
+
+	dmabuf->vmap_ptr = ptr;
+	dmabuf->vmapping_counter = 1;
+
+out_unlock:
+	mutex_unlock(&dmabuf->lock);
+	return ptr;
+}
+EXPORT_SYMBOL_GPL(dma_buf_vmap);
+
+/**
+ * dma_buf_vunmap - Unmap a vmap obtained by dma_buf_vmap.
+ * @dmabuf:	[in]	buffer to vunmap
+ * @vaddr:	[in]	vmap to vunmap
+ */
+void dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr)
+{
+	if (WARN_ON(!dmabuf))
+		return;
+
+	BUG_ON(!dmabuf->vmap_ptr);
+	BUG_ON(dmabuf->vmapping_counter == 0);
+	BUG_ON(dmabuf->vmap_ptr != vaddr);
+
+	mutex_lock(&dmabuf->lock);
+	if (--dmabuf->vmapping_counter == 0) {
+		if (dmabuf->ops->vunmap)
+			dmabuf->ops->vunmap(dmabuf, vaddr);
+		dmabuf->vmap_ptr = NULL;
+	}
+	mutex_unlock(&dmabuf->lock);
+}
+EXPORT_SYMBOL_GPL(dma_buf_vunmap);
+
+#ifdef CONFIG_DEBUG_FS
+static int dma_buf_describe(struct seq_file *s)
+{
+	int ret;
+	struct dma_buf *buf_obj;
+	struct dma_buf_attachment *attach_obj;
+	int count = 0, attach_count;
+	size_t size = 0;
+
+	ret = mutex_lock_interruptible(&db_list.lock);
+
+	if (ret)
+		return ret;
+
+	seq_printf(s, "\nDma-buf Objects:\n");
+	seq_printf(s, "\texp_name\tsize\tflags\tmode\tcount\n");
+
+	list_for_each_entry(buf_obj, &db_list.head, list_node) {
+		ret = mutex_lock_interruptible(&buf_obj->lock);
+
+		if (ret) {
+			seq_printf(s,
+				  "\tERROR locking buffer object: skipping\n");
+			continue;
+		}
+
+		seq_printf(s, "\t");
+
+		seq_printf(s, "\t%s\t%08zu\t%08x\t%08x\t%08ld\n",
+				buf_obj->exp_name, buf_obj->size,
+				buf_obj->file->f_flags, buf_obj->file->f_mode,
+				(long)(buf_obj->file->f_count.counter));
+
+		seq_printf(s, "\t\tAttached Devices:\n");
+		attach_count = 0;
+
+		list_for_each_entry(attach_obj, &buf_obj->attachments, node) {
+			seq_printf(s, "\t\t");
+
+			seq_printf(s, "%s\n", attach_obj->dev->init_name);
+			attach_count++;
+		}
+
+		seq_printf(s, "\n\t\tTotal %d devices attached\n",
+				attach_count);
+
+		count++;
+		size += buf_obj->size;
+		mutex_unlock(&buf_obj->lock);
+	}
+
+	seq_printf(s, "\nTotal %d objects, %zu bytes\n", count, size);
+
+	mutex_unlock(&db_list.lock);
+	return 0;
+}
+
+static int dma_buf_show(struct seq_file *s, void *unused)
+{
+	void (*func)(struct seq_file *) = s->private;
+	func(s);
+	return 0;
+}
+
+static int dma_buf_debug_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, dma_buf_show, inode->i_private);
+}
+
+static const struct file_operations dma_buf_debug_fops = {
+	.open           = dma_buf_debug_open,
+	.read           = seq_read,
+	.llseek         = seq_lseek,
+	.release        = single_release,
+};
+
+static struct dentry *dma_buf_debugfs_dir;
+
+static int dma_buf_init_debugfs(void)
+{
+	int err = 0;
+	dma_buf_debugfs_dir = debugfs_create_dir("dma_buf", NULL);
+	if (IS_ERR(dma_buf_debugfs_dir)) {
+		err = PTR_ERR(dma_buf_debugfs_dir);
+		dma_buf_debugfs_dir = NULL;
+		return err;
+	}
+
+	err = dma_buf_debugfs_create_file("bufinfo", dma_buf_describe);
+
+	if (err)
+		pr_debug("dma_buf: debugfs: failed to create node bufinfo\n");
+
+	return err;
+}
+
+static void dma_buf_uninit_debugfs(void)
+{
+	if (dma_buf_debugfs_dir)
+		debugfs_remove_recursive(dma_buf_debugfs_dir);
+}
+
+int dma_buf_debugfs_create_file(const char *name,
+				int (*write)(struct seq_file *))
+{
+	struct dentry *d;
+
+	d = debugfs_create_file(name, S_IRUGO, dma_buf_debugfs_dir,
+			write, &dma_buf_debug_fops);
+
+	if (IS_ERR(d))
+		return PTR_ERR(d);
+
+	return 0;
+}
+#else
+static inline int dma_buf_init_debugfs(void)
+{
+	return 0;
+}
+static inline void dma_buf_uninit_debugfs(void)
+{
+}
+#endif
+
+int __init dma_buf_init(void)
+{
+	mutex_init(&db_list.lock);
+	INIT_LIST_HEAD(&db_list.head);
+	dma_buf_init_debugfs();
+	return 0;
+}
+
+void __exit dma_buf_deinit(void)
+{
+	dma_buf_uninit_debugfs();
+}
diff --git a/compat/drivers-video-hdmi.c b/compat/drivers-video-hdmi.c
new file mode 100644
index 0000000..4017833
--- /dev/null
+++ b/compat/drivers-video-hdmi.c
@@ -0,0 +1,323 @@
+/*
+ * Copyright (C) 2012 Avionic Design GmbH
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sub license,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/bitops.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/hdmi.h>
+#include <linux/string.h>
+
+static void hdmi_infoframe_checksum(void *buffer, size_t size)
+{
+	u8 *ptr = buffer;
+	u8 csum = 0;
+	size_t i;
+
+	/* compute checksum */
+	for (i = 0; i < size; i++)
+		csum += ptr[i];
+
+	ptr[3] = 256 - csum;
+}
+
+/**
+ * hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe
+ * @frame: HDMI AVI infoframe
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame)
+{
+	memset(frame, 0, sizeof(*frame));
+
+	frame->type = HDMI_INFOFRAME_TYPE_AVI;
+	frame->version = 2;
+	frame->length = 13;
+
+	return 0;
+}
+EXPORT_SYMBOL(hdmi_avi_infoframe_init);
+
+/**
+ * hdmi_avi_infoframe_pack() - write HDMI AVI infoframe to binary buffer
+ * @frame: HDMI AVI infoframe
+ * @buffer: destination buffer
+ * @size: size of buffer
+ *
+ * Packs the information contained in the @frame structure into a binary
+ * representation that can be written into the corresponding controller
+ * registers. Also computes the checksum as required by section 5.3.5 of
+ * the HDMI 1.4 specification.
+ *
+ * Returns the number of bytes packed into the binary buffer or a negative
+ * error code on failure.
+ */
+ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
+				size_t size)
+{
+	u8 *ptr = buffer;
+	size_t length;
+
+	length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
+
+	if (size < length)
+		return -ENOSPC;
+
+	memset(buffer, 0, length);
+
+	ptr[0] = frame->type;
+	ptr[1] = frame->version;
+	ptr[2] = frame->length;
+	ptr[3] = 0; /* checksum */
+
+	/* start infoframe payload */
+	ptr += HDMI_INFOFRAME_HEADER_SIZE;
+
+	ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3);
+
+	if (frame->active_info_valid)
+		ptr[0] |= BIT(4);
+
+	if (frame->horizontal_bar_valid)
+		ptr[0] |= BIT(3);
+
+	if (frame->vertical_bar_valid)
+		ptr[0] |= BIT(2);
+
+	ptr[1] = ((frame->colorimetry & 0x3) << 6) |
+		 ((frame->picture_aspect & 0x3) << 4) |
+		 (frame->active_aspect & 0xf);
+
+	ptr[2] = ((frame->extended_colorimetry & 0x7) << 4) |
+		 ((frame->quantization_range & 0x3) << 2) |
+		 (frame->nups & 0x3);
+
+	if (frame->itc)
+		ptr[2] |= BIT(7);
+
+	ptr[3] = frame->video_code & 0x7f;
+
+	ptr[4] = ((frame->ycc_quantization_range & 0x3) << 6) |
+		 ((frame->content_type & 0x3) << 4) |
+		 (frame->pixel_repeat & 0xf);
+
+	ptr[5] = frame->top_bar & 0xff;
+	ptr[6] = (frame->top_bar >> 8) & 0xff;
+	ptr[7] = frame->bottom_bar & 0xff;
+	ptr[8] = (frame->bottom_bar >> 8) & 0xff;
+	ptr[9] = frame->left_bar & 0xff;
+	ptr[10] = (frame->left_bar >> 8) & 0xff;
+	ptr[11] = frame->right_bar & 0xff;
+	ptr[12] = (frame->right_bar >> 8) & 0xff;
+
+	hdmi_infoframe_checksum(buffer, length);
+
+	return length;
+}
+EXPORT_SYMBOL(hdmi_avi_infoframe_pack);
+
+/**
+ * hdmi_spd_infoframe_init() - initialize an HDMI SPD infoframe
+ * @frame: HDMI SPD infoframe
+ * @vendor: vendor string
+ * @product: product string
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
+			    const char *vendor, const char *product)
+{
+	memset(frame, 0, sizeof(*frame));
+
+	frame->type = HDMI_INFOFRAME_TYPE_SPD;
+	frame->version = 1;
+	frame->length = 25;
+
+	strncpy(frame->vendor, vendor, sizeof(frame->vendor));
+	strncpy(frame->product, product, sizeof(frame->product));
+
+	return 0;
+}
+EXPORT_SYMBOL(hdmi_spd_infoframe_init);
+
+/**
+ * hdmi_spd_infoframe_pack() - write HDMI SPD infoframe to binary buffer
+ * @frame: HDMI SPD infoframe
+ * @buffer: destination buffer
+ * @size: size of buffer
+ *
+ * Packs the information contained in the @frame structure into a binary
+ * representation that can be written into the corresponding controller
+ * registers. Also computes the checksum as required by section 5.3.5 of
+ * the HDMI 1.4 specification.
+ *
+ * Returns the number of bytes packed into the binary buffer or a negative
+ * error code on failure.
+ */
+ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,
+				size_t size)
+{
+	u8 *ptr = buffer;
+	size_t length;
+
+	length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
+
+	if (size < length)
+		return -ENOSPC;
+
+	memset(buffer, 0, length);
+
+	ptr[0] = frame->type;
+	ptr[1] = frame->version;
+	ptr[2] = frame->length;
+	ptr[3] = 0; /* checksum */
+
+	/* start infoframe payload */
+	ptr += HDMI_INFOFRAME_HEADER_SIZE;
+
+	memcpy(ptr, frame->vendor, sizeof(frame->vendor));
+	memcpy(ptr + 8, frame->product, sizeof(frame->product));
+
+	ptr[24] = frame->sdi;
+
+	hdmi_infoframe_checksum(buffer, length);
+
+	return length;
+}
+EXPORT_SYMBOL(hdmi_spd_infoframe_pack);
+
+/**
+ * hdmi_audio_infoframe_init() - initialize an HDMI audio infoframe
+ * @frame: HDMI audio infoframe
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame)
+{
+	memset(frame, 0, sizeof(*frame));
+
+	frame->type = HDMI_INFOFRAME_TYPE_AUDIO;
+	frame->version = 1;
+	frame->length = 10;
+
+	return 0;
+}
+EXPORT_SYMBOL(hdmi_audio_infoframe_init);
+
+/**
+ * hdmi_audio_infoframe_pack() - write HDMI audio infoframe to binary buffer
+ * @frame: HDMI audio infoframe
+ * @buffer: destination buffer
+ * @size: size of buffer
+ *
+ * Packs the information contained in the @frame structure into a binary
+ * representation that can be written into the corresponding controller
+ * registers. Also computes the checksum as required by section 5.3.5 of
+ * the HDMI 1.4 specification.
+ *
+ * Returns the number of bytes packed into the binary buffer or a negative
+ * error code on failure.
+ */
+ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
+				  void *buffer, size_t size)
+{
+	unsigned char channels;
+	u8 *ptr = buffer;
+	size_t length;
+
+	length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
+
+	if (size < length)
+		return -ENOSPC;
+
+	memset(buffer, 0, length);
+
+	if (frame->channels >= 2)
+		channels = frame->channels - 1;
+	else
+		channels = 0;
+
+	ptr[0] = frame->type;
+	ptr[1] = frame->version;
+	ptr[2] = frame->length;
+	ptr[3] = 0; /* checksum */
+
+	/* start infoframe payload */
+	ptr += HDMI_INFOFRAME_HEADER_SIZE;
+
+	ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7);
+	ptr[1] = ((frame->sample_frequency & 0x7) << 2) |
+		 (frame->sample_size & 0x3);
+	ptr[2] = frame->coding_type_ext & 0x1f;
+	ptr[3] = frame->channel_allocation;
+	ptr[4] = (frame->level_shift_value & 0xf) << 3;
+
+	if (frame->downmix_inhibit)
+		ptr[4] |= BIT(7);
+
+	hdmi_infoframe_checksum(buffer, length);
+
+	return length;
+}
+EXPORT_SYMBOL(hdmi_audio_infoframe_pack);
+
+/**
+ * hdmi_vendor_infoframe_pack() - write a HDMI vendor infoframe to binary
+ *                                buffer
+ * @frame: HDMI vendor infoframe
+ * @buffer: destination buffer
+ * @size: size of buffer
+ *
+ * Packs the information contained in the @frame structure into a binary
+ * representation that can be written into the corresponding controller
+ * registers. Also computes the checksum as required by section 5.3.5 of
+ * the HDMI 1.4 specification.
+ *
+ * Returns the number of bytes packed into the binary buffer or a negative
+ * error code on failure.
+ */
+ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
+				   void *buffer, size_t size)
+{
+	u8 *ptr = buffer;
+	size_t length;
+
+	length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
+
+	if (size < length)
+		return -ENOSPC;
+
+	memset(buffer, 0, length);
+
+	ptr[0] = frame->type;
+	ptr[1] = frame->version;
+	ptr[2] = frame->length;
+	ptr[3] = 0; /* checksum */
+
+	memcpy(&ptr[HDMI_INFOFRAME_HEADER_SIZE], frame->data, frame->length);
+
+	hdmi_infoframe_checksum(buffer, length);
+
+	return length;
+}
+EXPORT_SYMBOL(hdmi_vendor_infoframe_pack);
diff --git a/compat/flow_dissector.c b/compat/flow_dissector.c
new file mode 100644
index 0000000..7dd7ec1
--- /dev/null
+++ b/compat/flow_dissector.c
@@ -0,0 +1,143 @@
+#include <linux/skbuff.h>
+#include <linux/export.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/if_vlan.h>
+#include <net/ip.h>
+#include <linux/if_tunnel.h>
+#include <linux/if_pppox.h>
+#include <linux/ppp_defs.h>
+#include <net/flow_keys.h>
+
+/* copy saddr & daddr, possibly using 64bit load/store
+ * Equivalent to :	flow->src = iph->saddr;
+ *			flow->dst = iph->daddr;
+ */
+static void iph_to_flow_copy_addrs(struct flow_keys *flow, const struct iphdr *iph)
+{
+	BUILD_BUG_ON(offsetof(typeof(*flow), dst) !=
+		     offsetof(typeof(*flow), src) + sizeof(flow->src));
+	memcpy(&flow->src, &iph->saddr, sizeof(flow->src) + sizeof(flow->dst));
+}
+
+bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow)
+{
+	int poff, nhoff = skb_network_offset(skb);
+	u8 ip_proto;
+	__be16 proto = skb->protocol;
+
+	memset(flow, 0, sizeof(*flow));
+
+again:
+	switch (proto) {
+	case __constant_htons(ETH_P_IP): {
+		const struct iphdr *iph;
+		struct iphdr _iph;
+ip:
+		iph = skb_header_pointer(skb, nhoff, sizeof(_iph), &_iph);
+		if (!iph)
+			return false;
+
+		if (ip_is_fragment(iph))
+			ip_proto = 0;
+		else
+			ip_proto = iph->protocol;
+		iph_to_flow_copy_addrs(flow, iph);
+		nhoff += iph->ihl * 4;
+		break;
+	}
+	case __constant_htons(ETH_P_IPV6): {
+		const struct ipv6hdr *iph;
+		struct ipv6hdr _iph;
+ipv6:
+		iph = skb_header_pointer(skb, nhoff, sizeof(_iph), &_iph);
+		if (!iph)
+			return false;
+
+		ip_proto = iph->nexthdr;
+		flow->src = iph->saddr.s6_addr32[3];
+		flow->dst = iph->daddr.s6_addr32[3];
+		nhoff += sizeof(struct ipv6hdr);
+		break;
+	}
+	case __constant_htons(ETH_P_8021Q): {
+		const struct vlan_hdr *vlan;
+		struct vlan_hdr _vlan;
+
+		vlan = skb_header_pointer(skb, nhoff, sizeof(_vlan), &_vlan);
+		if (!vlan)
+			return false;
+
+		proto = vlan->h_vlan_encapsulated_proto;
+		nhoff += sizeof(*vlan);
+		goto again;
+	}
+	case __constant_htons(ETH_P_PPP_SES): {
+		struct {
+			struct pppoe_hdr hdr;
+			__be16 proto;
+		} *hdr, _hdr;
+		hdr = skb_header_pointer(skb, nhoff, sizeof(_hdr), &_hdr);
+		if (!hdr)
+			return false;
+		proto = hdr->proto;
+		nhoff += PPPOE_SES_HLEN;
+		switch (proto) {
+		case __constant_htons(PPP_IP):
+			goto ip;
+		case __constant_htons(PPP_IPV6):
+			goto ipv6;
+		default:
+			return false;
+		}
+	}
+	default:
+		return false;
+	}
+
+	switch (ip_proto) {
+	case IPPROTO_GRE: {
+		struct gre_hdr {
+			__be16 flags;
+			__be16 proto;
+		} *hdr, _hdr;
+
+		hdr = skb_header_pointer(skb, nhoff, sizeof(_hdr), &_hdr);
+		if (!hdr)
+			return false;
+		/*
+		 * Only look inside GRE if version zero and no
+		 * routing
+		 */
+		if (!(hdr->flags & (GRE_VERSION|GRE_ROUTING))) {
+			proto = hdr->proto;
+			nhoff += 4;
+			if (hdr->flags & GRE_CSUM)
+				nhoff += 4;
+			if (hdr->flags & GRE_KEY)
+				nhoff += 4;
+			if (hdr->flags & GRE_SEQ)
+				nhoff += 4;
+			goto again;
+		}
+		break;
+	}
+	case IPPROTO_IPIP:
+		goto again;
+	default:
+		break;
+	}
+
+	flow->ip_proto = ip_proto;
+	poff = proto_ports_offset(ip_proto);
+	if (poff >= 0) {
+		__be32 *ports, _ports;
+
+		nhoff += poff;
+		ports = skb_header_pointer(skb, nhoff, sizeof(_ports), &_ports);
+		if (ports)
+			flow->ports = *ports;
+	}
+
+	return true;
+}
diff --git a/compat/hid-ids.h b/compat/hid-ids.h
new file mode 100644
index 0000000..c147dc0
--- /dev/null
+++ b/compat/hid-ids.h
@@ -0,0 +1,866 @@
+/*
+ *  USB HID quirks support for Linux
+ *
+ *  Copyright (c) 1999 Andreas Gal
+ *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
+ *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
+ *  Copyright (c) 2006-2007 Jiri Kosina
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#ifndef HID_IDS_H_FILE
+#define HID_IDS_H_FILE
+
+#define USB_VENDOR_ID_3M		0x0596
+#define USB_DEVICE_ID_3M1968		0x0500
+#define USB_DEVICE_ID_3M2256		0x0502
+#define USB_DEVICE_ID_3M3266		0x0506
+
+#define USB_VENDOR_ID_A4TECH		0x09da
+#define USB_DEVICE_ID_A4TECH_WCP32PU	0x0006
+#define USB_DEVICE_ID_A4TECH_X5_005D	0x000a
+#define USB_DEVICE_ID_A4TECH_RP_649	0x001a
+
+#define USB_VENDOR_ID_AASHIMA		0x06d6
+#define USB_DEVICE_ID_AASHIMA_GAMEPAD	0x0025
+#define USB_DEVICE_ID_AASHIMA_PREDATOR	0x0026
+
+#define USB_VENDOR_ID_ACECAD		0x0460
+#define USB_DEVICE_ID_ACECAD_FLAIR	0x0004
+#define USB_DEVICE_ID_ACECAD_302	0x0008
+
+#define USB_VENDOR_ID_ACRUX		0x1a34
+
+#define USB_VENDOR_ID_ACTIONSTAR	0x2101
+#define USB_DEVICE_ID_ACTIONSTAR_1011	0x1011
+
+#define USB_VENDOR_ID_ADS_TECH		0x06e1
+#define USB_DEVICE_ID_ADS_TECH_RADIO_SI470X	0xa155
+
+#define USB_VENDOR_ID_AFATECH		0x15a4
+#define USB_DEVICE_ID_AFATECH_AF9016	0x9016
+
+#define USB_VENDOR_ID_AIPTEK		0x08ca
+#define USB_DEVICE_ID_AIPTEK_01		0x0001
+#define USB_DEVICE_ID_AIPTEK_10		0x0010
+#define USB_DEVICE_ID_AIPTEK_20		0x0020
+#define USB_DEVICE_ID_AIPTEK_21		0x0021
+#define USB_DEVICE_ID_AIPTEK_22		0x0022
+#define USB_DEVICE_ID_AIPTEK_23		0x0023
+#define USB_DEVICE_ID_AIPTEK_24		0x0024
+
+#define USB_VENDOR_ID_AIRCABLE		0x16CA
+#define USB_DEVICE_ID_AIRCABLE1		0x1502
+
+#define USB_VENDOR_ID_AIREN		0x1a2c
+#define USB_DEVICE_ID_AIREN_SLIMPLUS	0x0002
+
+#define USB_VENDOR_ID_ALCOR		0x058f
+#define USB_DEVICE_ID_ALCOR_USBRS232	0x9720
+
+#define USB_VENDOR_ID_ALPS		0x0433
+#define USB_DEVICE_ID_IBM_GAMEPAD	0x1101
+
+#define USB_VENDOR_ID_APPLE		0x05ac
+#define USB_DEVICE_ID_APPLE_MIGHTYMOUSE	0x0304
+#define USB_DEVICE_ID_APPLE_MAGICMOUSE	0x030d
+#define USB_DEVICE_ID_APPLE_MAGICTRACKPAD	0x030e
+#define USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI	0x020e
+#define USB_DEVICE_ID_APPLE_FOUNTAIN_ISO	0x020f
+#define USB_DEVICE_ID_APPLE_GEYSER_ANSI	0x0214
+#define USB_DEVICE_ID_APPLE_GEYSER_ISO	0x0215
+#define USB_DEVICE_ID_APPLE_GEYSER_JIS	0x0216
+#define USB_DEVICE_ID_APPLE_GEYSER3_ANSI	0x0217
+#define USB_DEVICE_ID_APPLE_GEYSER3_ISO	0x0218
+#define USB_DEVICE_ID_APPLE_GEYSER3_JIS	0x0219
+#define USB_DEVICE_ID_APPLE_GEYSER4_ANSI	0x021a
+#define USB_DEVICE_ID_APPLE_GEYSER4_ISO	0x021b
+#define USB_DEVICE_ID_APPLE_GEYSER4_JIS	0x021c
+#define USB_DEVICE_ID_APPLE_ALU_MINI_ANSI	0x021d
+#define USB_DEVICE_ID_APPLE_ALU_MINI_ISO	0x021e
+#define USB_DEVICE_ID_APPLE_ALU_MINI_JIS	0x021f
+#define USB_DEVICE_ID_APPLE_ALU_ANSI	0x0220
+#define USB_DEVICE_ID_APPLE_ALU_ISO	0x0221
+#define USB_DEVICE_ID_APPLE_ALU_JIS	0x0222
+#define USB_DEVICE_ID_APPLE_WELLSPRING_ANSI	0x0223
+#define USB_DEVICE_ID_APPLE_WELLSPRING_ISO	0x0224
+#define USB_DEVICE_ID_APPLE_WELLSPRING_JIS	0x0225
+#define USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI	0x0229
+#define USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO	0x022a
+#define USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS	0x022b
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI	0x022c
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO	0x022d
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS	0x022e
+#define USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI	0x0230
+#define USB_DEVICE_ID_APPLE_WELLSPRING2_ISO	0x0231
+#define USB_DEVICE_ID_APPLE_WELLSPRING2_JIS	0x0232
+#define USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI	0x0236
+#define USB_DEVICE_ID_APPLE_WELLSPRING3_ISO	0x0237
+#define USB_DEVICE_ID_APPLE_WELLSPRING3_JIS	0x0238
+#define USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI	0x023f
+#define USB_DEVICE_ID_APPLE_WELLSPRING4_ISO	0x0240
+#define USB_DEVICE_ID_APPLE_WELLSPRING4_JIS	0x0241
+#define USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI	0x0242
+#define USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO	0x0243
+#define USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS	0x0244
+#define USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI	0x0245
+#define USB_DEVICE_ID_APPLE_WELLSPRING5_ISO	0x0246
+#define USB_DEVICE_ID_APPLE_WELLSPRING5_JIS	0x0247
+#define USB_DEVICE_ID_APPLE_ALU_REVB_ANSI	0x024f
+#define USB_DEVICE_ID_APPLE_ALU_REVB_ISO	0x0250
+#define USB_DEVICE_ID_APPLE_ALU_REVB_JIS	0x0251
+#define USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI	0x0252
+#define USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO	0x0253
+#define USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS	0x0254
+#define USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI	0x0259
+#define USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO	0x025a
+#define USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS	0x025b
+#define USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI	0x0249
+#define USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO	0x024a
+#define USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS	0x024b
+#define USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI	0x024c
+#define USB_DEVICE_ID_APPLE_WELLSPRING6_ISO	0x024d
+#define USB_DEVICE_ID_APPLE_WELLSPRING6_JIS	0x024e
+#define USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI	0x0262
+#define USB_DEVICE_ID_APPLE_WELLSPRING7_ISO	0x0263
+#define USB_DEVICE_ID_APPLE_WELLSPRING7_JIS	0x0264
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI  0x0239
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO   0x023a
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS   0x023b
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI  0x0255
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO   0x0256
+#define USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY	0x030a
+#define USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY	0x030b
+#define USB_DEVICE_ID_APPLE_ATV_IRCONTROL	0x8241
+#define USB_DEVICE_ID_APPLE_IRCONTROL4	0x8242
+
+#define USB_VENDOR_ID_ASUS		0x0486
+#define USB_DEVICE_ID_ASUS_T91MT	0x0185
+#define USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO	0x0186
+
+#define USB_VENDOR_ID_ASUSTEK		0x0b05
+#define USB_DEVICE_ID_ASUSTEK_LCM	0x1726
+#define USB_DEVICE_ID_ASUSTEK_LCM2	0x175b
+
+#define USB_VENDOR_ID_ATEN		0x0557
+#define USB_DEVICE_ID_ATEN_UC100KM	0x2004
+#define USB_DEVICE_ID_ATEN_CS124U	0x2202
+#define USB_DEVICE_ID_ATEN_2PORTKVM	0x2204
+#define USB_DEVICE_ID_ATEN_4PORTKVM	0x2205
+#define USB_DEVICE_ID_ATEN_4PORTKVMC	0x2208
+
+#define USB_VENDOR_ID_ATMEL		0x03eb
+#define USB_DEVICE_ID_ATMEL_MULTITOUCH	0x211c
+#define USB_DEVICE_ID_ATMEL_MXT_DIGITIZER	0x2118
+
+#define USB_VENDOR_ID_AUREAL		0x0755
+#define USB_DEVICE_ID_AUREAL_W01RN	0x2626
+
+#define USB_VENDOR_ID_AVERMEDIA		0x07ca
+#define USB_DEVICE_ID_AVER_FM_MR800	0xb800
+
+#define USB_VENDOR_ID_AXENTIA		0x12cf
+#define USB_DEVICE_ID_AXENTIA_FM_RADIO	0x7111
+
+#define USB_VENDOR_ID_BAANTO		0x2453
+#define USB_DEVICE_ID_BAANTO_MT_190W2	0x0100
+
+#define USB_VENDOR_ID_BELKIN		0x050d
+#define USB_DEVICE_ID_FLIP_KVM		0x3201
+
+#define USB_VENDOR_ID_BERKSHIRE		0x0c98
+#define USB_DEVICE_ID_BERKSHIRE_PCWD	0x1140
+
+#define USB_VENDOR_ID_BTC		0x046e
+#define USB_DEVICE_ID_BTC_EMPREX_REMOTE	0x5578
+#define USB_DEVICE_ID_BTC_EMPREX_REMOTE_2	0x5577
+
+#define USB_VENDOR_ID_CANDO		0x2087
+#define USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH 0x0703
+#define USB_DEVICE_ID_CANDO_MULTI_TOUCH	0x0a01
+#define USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1 0x0a02
+#define USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6 0x0b03
+#define USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6 0x0f01
+
+#define USB_VENDOR_ID_CH		0x068e
+#define USB_DEVICE_ID_CH_PRO_THROTTLE	0x00f1
+#define USB_DEVICE_ID_CH_PRO_PEDALS	0x00f2
+#define USB_DEVICE_ID_CH_FIGHTERSTICK	0x00f3
+#define USB_DEVICE_ID_CH_COMBATSTICK	0x00f4
+#define USB_DEVICE_ID_CH_FLIGHT_SIM_ECLIPSE_YOKE       0x0051
+#define USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE	0x00ff
+#define USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK	0x00d3
+#define USB_DEVICE_ID_CH_AXIS_295	0x001c
+
+#define USB_VENDOR_ID_CHERRY		0x046a
+#define USB_DEVICE_ID_CHERRY_CYMOTION	0x0023
+#define USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR	0x0027
+
+#define USB_VENDOR_ID_CHIC		0x05fe
+#define USB_DEVICE_ID_CHIC_GAMEPAD	0x0014
+
+#define USB_VENDOR_ID_CHICONY		0x04f2
+#define USB_DEVICE_ID_CHICONY_TACTICAL_PAD	0x0418
+#define USB_DEVICE_ID_CHICONY_MULTI_TOUCH	0xb19d
+#define USB_DEVICE_ID_CHICONY_WIRELESS	0x0618
+#define USB_DEVICE_ID_CHICONY_WIRELESS2	0x1123
+#define USB_DEVICE_ID_CHICONY_AK1D	0x1125
+
+#define USB_VENDOR_ID_CHUNGHWAT		0x2247
+#define USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH	0x0001
+
+#define USB_VENDOR_ID_CIDC		0x1677
+
+#define USB_VENDOR_ID_CMEDIA		0x0d8c
+#define USB_DEVICE_ID_CM109		0x000e
+
+#define USB_VENDOR_ID_CODEMERCS		0x07c0
+#define USB_DEVICE_ID_CODEMERCS_IOW_FIRST	0x1500
+#define USB_DEVICE_ID_CODEMERCS_IOW_LAST	0x15ff
+
+#define USB_VENDOR_ID_CREATIVELABS	0x041e
+#define USB_DEVICE_ID_PRODIKEYS_PCMIDI	0x2801
+
+#define USB_VENDOR_ID_CVTOUCH		0x1ff7
+#define USB_DEVICE_ID_CVTOUCH_SCREEN	0x0013
+
+#define USB_VENDOR_ID_CYGNAL		0x10c4
+#define USB_DEVICE_ID_CYGNAL_RADIO_SI470X	0x818a
+
+#define USB_VENDOR_ID_CYPRESS		0x04b4
+#define USB_DEVICE_ID_CYPRESS_MOUSE	0x0001
+#define USB_DEVICE_ID_CYPRESS_HIDCOM	0x5500
+#define USB_DEVICE_ID_CYPRESS_ULTRAMOUSE	0x7417
+#define USB_DEVICE_ID_CYPRESS_BARCODE_1	0xde61
+#define USB_DEVICE_ID_CYPRESS_BARCODE_2	0xde64
+#define USB_DEVICE_ID_CYPRESS_BARCODE_3	0xbca1
+#define USB_DEVICE_ID_CYPRESS_BARCODE_4	0xed81
+#define USB_DEVICE_ID_CYPRESS_TRUETOUCH	0xc001
+
+#define USB_VENDOR_ID_DEALEXTREAME	0x10c5
+#define USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701	0x819a
+
+#define USB_VENDOR_ID_DELORME		0x1163
+#define USB_DEVICE_ID_DELORME_EARTHMATE	0x0100
+#define USB_DEVICE_ID_DELORME_EM_LT20	0x0200
+
+#define USB_VENDOR_ID_DMI		0x0c0b
+#define USB_DEVICE_ID_DMI_ENC		0x5fab
+
+#define USB_VENDOR_ID_DRAGONRISE	0x0079
+
+#define USB_VENDOR_ID_DWAV		0x0eef
+#define USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER	0x0001
+#define USB_DEVICE_ID_DWAV_TOUCHCONTROLLER	0x0002
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D	0x480d
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E	0x480e
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207	0x7207
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C	0x720c
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224	0x7224
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A	0x722A
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E	0x725e
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262	0x7262
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B	0x726b
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA	0x72aa
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1	0x72a1
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA	0x72fa
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302	0x7302
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349	0x7349
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7	0x73f7
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001	0xa001
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224      0x7224
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0      0x72d0
+#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4      0x72c4
+
+#define USB_VENDOR_ID_ELECOM		0x056e
+#define USB_DEVICE_ID_ELECOM_BM084	0x0061
+
+#define USB_VENDOR_ID_DREAM_CHEEKY	0x1d34
+
+#define USB_VENDOR_ID_ELO		0x04E7
+#define USB_DEVICE_ID_ELO_TS2515	0x0022
+#define USB_DEVICE_ID_ELO_TS2700	0x0020
+
+#define USB_VENDOR_ID_EMS		0x2006
+#define USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II 0x0118
+
+#define USB_VENDOR_ID_FLATFROG		0x25b5
+#define USB_DEVICE_ID_MULTITOUCH_3200	0x0002
+
+#define USB_VENDOR_ID_ESSENTIAL_REALITY	0x0d7f
+#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
+
+#define USB_VENDOR_ID_ETT		0x0664
+#define USB_DEVICE_ID_TC5UH		0x0309
+#define USB_DEVICE_ID_TC4UM		0x0306
+
+#define USB_VENDOR_ID_ETURBOTOUCH	0x22b9
+#define USB_DEVICE_ID_ETURBOTOUCH	0x0006
+
+#define USB_VENDOR_ID_EZKEY		0x0518
+#define USB_DEVICE_ID_BTC_8193		0x0002
+
+#define USB_VENDOR_ID_FREESCALE		0x15A2
+#define USB_DEVICE_ID_FREESCALE_MX28	0x004F
+
+#define USB_VENDOR_ID_FRUCTEL	0x25B6
+#define USB_DEVICE_ID_GAMETEL_MT_MODE	0x0002
+
+#define USB_VENDOR_ID_GAMERON		0x0810
+#define USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR	0x0001
+#define USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR	0x0002
+
+#define USB_VENDOR_ID_GENERAL_TOUCH	0x0dfc
+#define USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS 0x0003
+#define USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS 0x0100
+
+#define USB_VENDOR_ID_GLAB		0x06c2
+#define USB_DEVICE_ID_4_PHIDGETSERVO_30	0x0038
+#define USB_DEVICE_ID_1_PHIDGETSERVO_30	0x0039
+#define USB_DEVICE_ID_0_0_4_IF_KIT	0x0040
+#define USB_DEVICE_ID_0_16_16_IF_KIT	0x0044
+#define USB_DEVICE_ID_8_8_8_IF_KIT	0x0045
+#define USB_DEVICE_ID_0_8_7_IF_KIT	0x0051
+#define USB_DEVICE_ID_0_8_8_IF_KIT	0x0053
+#define USB_DEVICE_ID_PHIDGET_MOTORCONTROL	0x0058
+
+#define USB_VENDOR_ID_GOODTOUCH		0x1aad
+#define USB_DEVICE_ID_GOODTOUCH_000f	0x000f
+
+#define USB_VENDOR_ID_GOTOP		0x08f2
+#define USB_DEVICE_ID_SUPER_Q2		0x007f
+#define USB_DEVICE_ID_GOGOPEN		0x00ce
+#define USB_DEVICE_ID_PENPOWER		0x00f4
+
+#define USB_VENDOR_ID_GREENASIA		0x0e8f
+#define USB_DEVICE_ID_GREENASIA_DUAL_USB_JOYPAD	0x3013
+
+#define USB_VENDOR_ID_GRETAGMACBETH	0x0971
+#define USB_DEVICE_ID_GRETAGMACBETH_HUEY	0x2005
+
+#define USB_VENDOR_ID_GRIFFIN		0x077d
+#define USB_DEVICE_ID_POWERMATE		0x0410
+#define USB_DEVICE_ID_SOUNDKNOB		0x04AA
+#define USB_DEVICE_ID_RADIOSHARK	0x627a
+
+#define USB_VENDOR_ID_GTCO		0x078c
+#define USB_DEVICE_ID_GTCO_90		0x0090
+#define USB_DEVICE_ID_GTCO_100		0x0100
+#define USB_DEVICE_ID_GTCO_101		0x0101
+#define USB_DEVICE_ID_GTCO_103		0x0103
+#define USB_DEVICE_ID_GTCO_104		0x0104
+#define USB_DEVICE_ID_GTCO_105		0x0105
+#define USB_DEVICE_ID_GTCO_106		0x0106
+#define USB_DEVICE_ID_GTCO_107		0x0107
+#define USB_DEVICE_ID_GTCO_108		0x0108
+#define USB_DEVICE_ID_GTCO_200		0x0200
+#define USB_DEVICE_ID_GTCO_201		0x0201
+#define USB_DEVICE_ID_GTCO_202		0x0202
+#define USB_DEVICE_ID_GTCO_203		0x0203
+#define USB_DEVICE_ID_GTCO_204		0x0204
+#define USB_DEVICE_ID_GTCO_205		0x0205
+#define USB_DEVICE_ID_GTCO_206		0x0206
+#define USB_DEVICE_ID_GTCO_207		0x0207
+#define USB_DEVICE_ID_GTCO_300		0x0300
+#define USB_DEVICE_ID_GTCO_301		0x0301
+#define USB_DEVICE_ID_GTCO_302		0x0302
+#define USB_DEVICE_ID_GTCO_303		0x0303
+#define USB_DEVICE_ID_GTCO_304		0x0304
+#define USB_DEVICE_ID_GTCO_305		0x0305
+#define USB_DEVICE_ID_GTCO_306		0x0306
+#define USB_DEVICE_ID_GTCO_307		0x0307
+#define USB_DEVICE_ID_GTCO_308		0x0308
+#define USB_DEVICE_ID_GTCO_309		0x0309
+#define USB_DEVICE_ID_GTCO_400		0x0400
+#define USB_DEVICE_ID_GTCO_401		0x0401
+#define USB_DEVICE_ID_GTCO_402		0x0402
+#define USB_DEVICE_ID_GTCO_403		0x0403
+#define USB_DEVICE_ID_GTCO_404		0x0404
+#define USB_DEVICE_ID_GTCO_405		0x0405
+#define USB_DEVICE_ID_GTCO_500		0x0500
+#define USB_DEVICE_ID_GTCO_501		0x0501
+#define USB_DEVICE_ID_GTCO_502		0x0502
+#define USB_DEVICE_ID_GTCO_503		0x0503
+#define USB_DEVICE_ID_GTCO_504		0x0504
+#define USB_DEVICE_ID_GTCO_1000		0x1000
+#define USB_DEVICE_ID_GTCO_1001		0x1001
+#define USB_DEVICE_ID_GTCO_1002		0x1002
+#define USB_DEVICE_ID_GTCO_1003		0x1003
+#define USB_DEVICE_ID_GTCO_1004		0x1004
+#define USB_DEVICE_ID_GTCO_1005		0x1005
+#define USB_DEVICE_ID_GTCO_1006		0x1006
+#define USB_DEVICE_ID_GTCO_1007		0x1007
+
+#define USB_VENDOR_ID_GYRATION		0x0c16
+#define USB_DEVICE_ID_GYRATION_REMOTE	0x0002
+#define USB_DEVICE_ID_GYRATION_REMOTE_2 0x0003
+#define USB_DEVICE_ID_GYRATION_REMOTE_3 0x0008
+
+#define USB_VENDOR_ID_HANWANG		0x0b57
+#define USB_DEVICE_ID_HANWANG_TABLET_FIRST	0x5000
+#define USB_DEVICE_ID_HANWANG_TABLET_LAST	0x8fff
+
+#define USB_VENDOR_ID_HANVON		0x20b3
+#define USB_DEVICE_ID_HANVON_MULTITOUCH	0x0a18
+
+#define USB_VENDOR_ID_HANVON_ALT	0x22ed
+#define USB_DEVICE_ID_HANVON_ALT_MULTITOUCH	0x1010
+
+#define USB_VENDOR_ID_HAPP		0x078b
+#define USB_DEVICE_ID_UGCI_DRIVING	0x0010
+#define USB_DEVICE_ID_UGCI_FLYING	0x0020
+#define USB_DEVICE_ID_UGCI_FIGHTING	0x0030
+
+#define USB_VENDOR_ID_IDEACOM		0x1cb6
+#define USB_DEVICE_ID_IDEACOM_IDC6650	0x6650
+#define USB_DEVICE_ID_IDEACOM_IDC6651	0x6651
+
+#define USB_VENDOR_ID_ILITEK		0x222a
+#define USB_DEVICE_ID_ILITEK_MULTITOUCH	0x0001
+
+#define USB_VENDOR_ID_ION		0x15e4
+#define USB_DEVICE_ID_ICADE		0x0132
+
+#define USB_VENDOR_ID_HOLTEK		0x1241
+#define USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP	0x5015
+
+#define USB_VENDOR_ID_HOLTEK_ALT		0x04d9
+#define USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD	0xa055
+
+#define USB_VENDOR_ID_IMATION		0x0718
+#define USB_DEVICE_ID_DISC_STAKKA	0xd000
+
+#define USB_VENDOR_ID_INTEL_8086	0x8086
+#define USB_VENDOR_ID_INTEL_8087	0x8087
+#define USB_DEVICE_ID_SENSOR_HUB_1020	0x1020
+#define USB_DEVICE_ID_SENSOR_HUB_09FA	0x09FA
+
+#define USB_VENDOR_ID_IRTOUCHSYSTEMS	0x6615
+#define USB_DEVICE_ID_IRTOUCH_INFRARED_USB	0x0070
+
+#define USB_VENDOR_ID_JESS		0x0c45
+#define USB_DEVICE_ID_JESS_YUREX	0x1010
+
+#define USB_VENDOR_ID_KBGEAR		0x084e
+#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO	0x1001
+
+#define USB_VENDOR_ID_KENSINGTON	0x047d
+#define USB_DEVICE_ID_KS_SLIMBLADE	0x2041
+
+#define USB_VENDOR_ID_KWORLD		0x1b80
+#define USB_DEVICE_ID_KWORLD_RADIO_FM700	0xd700
+
+#define USB_VENDOR_ID_KEYTOUCH		0x0926
+#define USB_DEVICE_ID_KEYTOUCH_IEC	0x3333
+
+#define USB_VENDOR_ID_KYE		0x0458
+#define USB_DEVICE_ID_KYE_ERGO_525V	0x0087
+#define USB_DEVICE_ID_KYE_GPEN_560	0x5003
+#define USB_DEVICE_ID_KYE_EASYPEN_I405X	0x5010
+#define USB_DEVICE_ID_KYE_MOUSEPEN_I608X	0x5011
+#define USB_DEVICE_ID_KYE_EASYPEN_M610X	0x5013
+
+#define USB_VENDOR_ID_LABTEC		0x1020
+#define USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD	0x0006
+
+#define USB_VENDOR_ID_LCPOWER		0x1241
+#define USB_DEVICE_ID_LCPOWER_LC1000	0xf767
+
+#define USB_VENDOR_ID_LD		0x0f11
+#define USB_DEVICE_ID_LD_CASSY		0x1000
+#define USB_DEVICE_ID_LD_CASSY2		0x1001
+#define USB_DEVICE_ID_LD_POCKETCASSY	0x1010
+#define USB_DEVICE_ID_LD_POCKETCASSY2	0x1011
+#define USB_DEVICE_ID_LD_MOBILECASSY	0x1020
+#define USB_DEVICE_ID_LD_MOBILECASSY2	0x1021
+#define USB_DEVICE_ID_LD_MICROCASSYVOLTAGE	0x1031
+#define USB_DEVICE_ID_LD_MICROCASSYCURRENT	0x1032
+#define USB_DEVICE_ID_LD_MICROCASSYTIME		0x1033
+#define USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE	0x1035
+#define USB_DEVICE_ID_LD_MICROCASSYPH		0x1038
+#define USB_DEVICE_ID_LD_JWM		0x1080
+#define USB_DEVICE_ID_LD_DMMP		0x1081
+#define USB_DEVICE_ID_LD_UMIP		0x1090
+#define USB_DEVICE_ID_LD_UMIC		0x10A0
+#define USB_DEVICE_ID_LD_UMIB		0x10B0
+#define USB_DEVICE_ID_LD_XRAY		0x1100
+#define USB_DEVICE_ID_LD_XRAY2		0x1101
+#define USB_DEVICE_ID_LD_XRAYCT		0x1110
+#define USB_DEVICE_ID_LD_VIDEOCOM	0x1200
+#define USB_DEVICE_ID_LD_MOTOR		0x1210
+#define USB_DEVICE_ID_LD_COM3LAB	0x2000
+#define USB_DEVICE_ID_LD_TELEPORT	0x2010
+#define USB_DEVICE_ID_LD_NETWORKANALYSER 0x2020
+#define USB_DEVICE_ID_LD_POWERCONTROL	0x2030
+#define USB_DEVICE_ID_LD_MACHINETEST	0x2040
+#define USB_DEVICE_ID_LD_MOSTANALYSER	0x2050
+#define USB_DEVICE_ID_LD_MOSTANALYSER2	0x2051
+#define USB_DEVICE_ID_LD_ABSESP		0x2060
+#define USB_DEVICE_ID_LD_AUTODATABUS	0x2070
+#define USB_DEVICE_ID_LD_MCT		0x2080
+#define USB_DEVICE_ID_LD_HYBRID		0x2090
+#define USB_DEVICE_ID_LD_HEATCONTROL	0x20A0
+
+#define USB_VENDOR_ID_LENOVO		0x17ef
+#define USB_DEVICE_ID_LENOVO_TPKBD	0x6009
+
+#define USB_VENDOR_ID_LG		0x1fd2
+#define USB_DEVICE_ID_LG_MULTITOUCH	0x0064
+
+#define USB_VENDOR_ID_LOGITECH		0x046d
+#define USB_DEVICE_ID_LOGITECH_AUDIOHUB 0x0a0e
+#define USB_DEVICE_ID_LOGITECH_RECEIVER	0xc101
+#define USB_DEVICE_ID_LOGITECH_HARMONY_FIRST  0xc110
+#define USB_DEVICE_ID_LOGITECH_HARMONY_LAST 0xc14f
+#define USB_DEVICE_ID_LOGITECH_HARMONY_PS3 0x0306
+#define USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD	0xc20a
+#define USB_DEVICE_ID_LOGITECH_RUMBLEPAD	0xc211
+#define USB_DEVICE_ID_LOGITECH_EXTREME_3D	0xc215
+#define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2	0xc218
+#define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2	0xc219
+#define USB_DEVICE_ID_LOGITECH_WINGMAN_F3D	0xc283
+#define USB_DEVICE_ID_LOGITECH_FORCE3D_PRO	0xc286
+#define USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940	0xc287
+#define USB_DEVICE_ID_LOGITECH_WHEEL	0xc294
+#define USB_DEVICE_ID_LOGITECH_WINGMAN_FFG	0xc293
+#define USB_DEVICE_ID_LOGITECH_MOMO_WHEEL	0xc295
+#define USB_DEVICE_ID_LOGITECH_DFP_WHEEL	0xc298
+#define USB_DEVICE_ID_LOGITECH_G25_WHEEL	0xc299
+#define USB_DEVICE_ID_LOGITECH_DFGT_WHEEL	0xc29a
+#define USB_DEVICE_ID_LOGITECH_G27_WHEEL	0xc29b
+#define USB_DEVICE_ID_LOGITECH_WII_WHEEL	0xc29c
+#define USB_DEVICE_ID_LOGITECH_ELITE_KBD	0xc30a
+#define USB_DEVICE_ID_S510_RECEIVER	0xc50c
+#define USB_DEVICE_ID_S510_RECEIVER_2	0xc517
+#define USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500	0xc512
+#define USB_DEVICE_ID_MX3000_RECEIVER	0xc513
+#define USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER	0xc52b
+#define USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2	0xc532
+#define USB_DEVICE_ID_SPACETRAVELLER	0xc623
+#define USB_DEVICE_ID_SPACENAVIGATOR	0xc626
+#define USB_DEVICE_ID_DINOVO_DESKTOP	0xc704
+#define USB_DEVICE_ID_DINOVO_EDGE	0xc714
+#define USB_DEVICE_ID_DINOVO_MINI	0xc71f
+#define USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2	0xca03
+
+#define USB_VENDOR_ID_LUMIO		0x202e
+#define USB_DEVICE_ID_CRYSTALTOUCH	0x0006
+#define USB_DEVICE_ID_CRYSTALTOUCH_DUAL	0x0007
+
+#define USB_VENDOR_ID_MADCATZ		0x0738
+#define USB_DEVICE_ID_MADCATZ_BEATPAD	0x4540
+
+#define USB_VENDOR_ID_MCC		0x09db
+#define USB_DEVICE_ID_MCC_PMD1024LS	0x0076
+#define USB_DEVICE_ID_MCC_PMD1208LS	0x007a
+
+#define USB_VENDOR_ID_MGE		0x0463
+#define USB_DEVICE_ID_MGE_UPS		0xffff
+#define USB_DEVICE_ID_MGE_UPS1		0x0001
+
+#define USB_VENDOR_ID_MICROCHIP		0x04d8
+#define USB_DEVICE_ID_PICKIT1		0x0032
+#define USB_DEVICE_ID_PICKIT2		0x0033
+#define USB_DEVICE_ID_PICOLCD		0xc002
+#define USB_DEVICE_ID_PICOLCD_BOOTLOADER	0xf002
+
+#define USB_VENDOR_ID_MICROSOFT		0x045e
+#define USB_DEVICE_ID_SIDEWINDER_GV	0x003b
+#define USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0 0x009d
+#define USB_DEVICE_ID_MS_NE4K		0x00db
+#define USB_DEVICE_ID_MS_LK6K		0x00f9
+#define USB_DEVICE_ID_MS_PRESENTER_8K_BT	0x0701
+#define USB_DEVICE_ID_MS_PRESENTER_8K_USB	0x0713
+#define USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K	0x0730
+#define USB_DEVICE_ID_MS_COMFORT_MOUSE_4500	0x076c
+
+#define USB_VENDOR_ID_MOJO		0x8282
+#define USB_DEVICE_ID_RETRO_ADAPTER	0x3201
+
+#define USB_VENDOR_ID_MONTEREY		0x0566
+#define USB_DEVICE_ID_GENIUS_KB29E	0x3004
+
+#define USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR 0x0400
+#define USB_DEVICE_ID_N_S_HARMONY	0xc359
+
+#define USB_VENDOR_ID_NATSU		0x08b7
+#define USB_DEVICE_ID_NATSU_GAMEPAD	0x0001
+
+#define USB_VENDOR_ID_NCR		0x0404
+#define USB_DEVICE_ID_NCR_FIRST		0x0300
+#define USB_DEVICE_ID_NCR_LAST		0x03ff
+
+#define USB_VENDOR_ID_NEC		0x073e
+#define USB_DEVICE_ID_NEC_USB_GAME_PAD	0x0301
+
+#define USB_VENDOR_ID_NEXTWINDOW	0x1926
+#define USB_DEVICE_ID_NEXTWINDOW_TOUCHSCREEN	0x0003
+
+#define USB_VENDOR_ID_NINTENDO		0x057e
+#define USB_DEVICE_ID_NINTENDO_WIIMOTE	0x0306
+
+#define USB_VENDOR_ID_NOVATEK		0x0603
+#define USB_DEVICE_ID_NOVATEK_PCT	0x0600
+
+#define USB_VENDOR_ID_NTRIG		0x1b96
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN   0x0001
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1   0x0003
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2   0x0004
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3   0x0005
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4   0x0006
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5   0x0007
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6   0x0008
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7   0x0009
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8   0x000A
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9   0x000B
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10   0x000C
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11   0x000D
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12   0x000E
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13   0x000F
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14   0x0010
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15   0x0011
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16   0x0012
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17   0x0013
+#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18   0x0014
+
+#define USB_VENDOR_ID_ONTRAK		0x0a07
+#define USB_DEVICE_ID_ONTRAK_ADU100	0x0064
+
+#define USB_VENDOR_ID_ORTEK		0x05a4
+#define USB_DEVICE_ID_ORTEK_PKB1700	0x1700
+#define USB_DEVICE_ID_ORTEK_WKB2000	0x2000
+
+#define USB_VENDOR_ID_PANASONIC		0x04da
+#define USB_DEVICE_ID_PANABOARD_UBT780	0x1044
+#define USB_DEVICE_ID_PANABOARD_UBT880	0x104d
+
+#define USB_VENDOR_ID_PANJIT		0x134c
+
+#define USB_VENDOR_ID_PANTHERLORD	0x0810
+#define USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK	0x0001
+
+#define USB_VENDOR_ID_PENMOUNT		0x14e1
+#define USB_DEVICE_ID_PENMOUNT_PCI	0x3500
+
+#define USB_VENDOR_ID_PETALYNX		0x18b1
+#define USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE	0x0037
+
+#define USB_VENDOR_ID_PHILIPS		0x0471
+#define USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE 0x0617
+
+#define USB_VENDOR_ID_PI_ENGINEERING	0x05f3
+#define USB_DEVICE_ID_PI_ENGINEERING_VEC_USB_FOOTPEDAL	0xff
+
+#define USB_VENDOR_ID_PIXART				0x093a
+#define USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN	0x8001
+#define USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1	0x8002
+#define USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2	0x8003
+
+#define USB_VENDOR_ID_PLAYDOTCOM	0x0b43
+#define USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII	0x0003
+
+#define USB_VENDOR_ID_POWERCOM		0x0d9f
+#define USB_DEVICE_ID_POWERCOM_UPS	0x0002
+
+#define USB_VENDOR_ID_PRODIGE		0x05af
+#define USB_DEVICE_ID_PRODIGE_CORDLESS	0x3062
+
+#define USB_VENDOR_ID_QUANTA		0x0408
+#define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH		0x3000
+#define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001		0x3001
+#define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008		0x3008
+
+#define USB_VENDOR_ID_ROCCAT		0x1e7d
+#define USB_DEVICE_ID_ROCCAT_ARVO	0x30d4
+#define USB_DEVICE_ID_ROCCAT_ISKU	0x319c
+#define USB_DEVICE_ID_ROCCAT_KONE	0x2ced
+#define USB_DEVICE_ID_ROCCAT_KONEPLUS	0x2d51
+#define USB_DEVICE_ID_ROCCAT_KONEXTD	0x2e22
+#define USB_DEVICE_ID_ROCCAT_KOVAPLUS	0x2d50
+#define USB_DEVICE_ID_ROCCAT_LUA	0x2c2e
+#define USB_DEVICE_ID_ROCCAT_PYRA_WIRED	0x2c24
+#define USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS	0x2cf6
+#define USB_DEVICE_ID_ROCCAT_SAVU	0x2d5a
+
+#define USB_VENDOR_ID_SAITEK		0x06a3
+#define USB_DEVICE_ID_SAITEK_RUMBLEPAD	0xff17
+#define USB_DEVICE_ID_SAITEK_PS1000	0x0621
+
+#define USB_VENDOR_ID_SAMSUNG		0x0419
+#define USB_DEVICE_ID_SAMSUNG_IR_REMOTE	0x0001
+#define USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE	0x0600
+
+#define USB_VENDOR_ID_SENNHEISER	0x1395
+#define USB_DEVICE_ID_SENNHEISER_BTD500USB	0x002c
+
+#define USB_VENDOR_ID_SIGMA_MICRO	0x1c4f
+#define USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD	0x0002
+
+#define USB_VENDOR_ID_SIGMATEL		0x066F
+#define USB_DEVICE_ID_SIGMATEL_STMP3780	0x3780
+
+#define USB_VENDOR_ID_SKYCABLE			0x1223
+#define	USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER	0x3F07
+
+#define USB_VENDOR_ID_SONY			0x054c
+#define USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE	0x024b
+#define USB_DEVICE_ID_SONY_PS3_BDREMOTE		0x0306
+#define USB_DEVICE_ID_SONY_PS3_CONTROLLER	0x0268
+#define USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER	0x042f
+
+#define USB_VENDOR_ID_SOUNDGRAPH	0x15c2
+#define USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST	0x0034
+#define USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST	0x0046
+
+#define USB_VENDOR_ID_STANTUM		0x1f87
+#define USB_DEVICE_ID_MTP		0x0002
+
+#define USB_VENDOR_ID_STANTUM_STM		0x0483
+#define USB_DEVICE_ID_MTP_STM		0x3261
+#define USB_DEVICE_ID_SENSOR_HUB_7014	0x7014
+
+#define USB_VENDOR_ID_STANTUM_SITRONIX		0x1403
+#define USB_DEVICE_ID_MTP_SITRONIX		0x5001
+
+#define USB_VENDOR_ID_SUN		0x0430
+#define USB_DEVICE_ID_RARITAN_KVM_DONGLE	0xcdab
+
+#define USB_VENDOR_ID_SUNPLUS		0x04fc
+#define USB_DEVICE_ID_SUNPLUS_WDESKTOP	0x05d8
+
+#define USB_VENDOR_ID_SYMBOL		0x05e0
+#define USB_DEVICE_ID_SYMBOL_SCANNER_1	0x0800
+#define USB_DEVICE_ID_SYMBOL_SCANNER_2	0x1300
+
+#define USB_VENDOR_ID_SYNAPTICS		0x06cb
+#define USB_DEVICE_ID_SYNAPTICS_TP	0x0001
+#define USB_DEVICE_ID_SYNAPTICS_INT_TP	0x0002
+#define USB_DEVICE_ID_SYNAPTICS_CPAD	0x0003
+#define USB_DEVICE_ID_SYNAPTICS_TS	0x0006
+#define USB_DEVICE_ID_SYNAPTICS_STICK	0x0007
+#define USB_DEVICE_ID_SYNAPTICS_WP	0x0008
+#define USB_DEVICE_ID_SYNAPTICS_COMP_TP	0x0009
+#define USB_DEVICE_ID_SYNAPTICS_WTP	0x0010
+#define USB_DEVICE_ID_SYNAPTICS_DPAD	0x0013
+
+#define USB_VENDOR_ID_THRUSTMASTER	0x044f
+
+#define USB_VENDOR_ID_TIVO		0x150a
+#define USB_DEVICE_ID_TIVO_SLIDE_BT	0x1200
+#define USB_DEVICE_ID_TIVO_SLIDE	0x1201
+
+#define USB_VENDOR_ID_TOPSEED		0x0766
+#define USB_DEVICE_ID_TOPSEED_CYBERLINK	0x0204
+
+#define USB_VENDOR_ID_TOPSEED2		0x1784
+#define USB_DEVICE_ID_TOPSEED2_RF_COMBO	0x0004
+#define USB_DEVICE_ID_TOPSEED2_PERIPAD_701	0x0016
+
+#define USB_VENDOR_ID_TOPMAX		0x0663
+#define USB_DEVICE_ID_TOPMAX_COBRAPAD	0x0103
+
+#define USB_VENDOR_ID_TOUCH_INTL	0x1e5e
+#define USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH	0x0313
+
+#define USB_VENDOR_ID_TOUCHPACK		0x1bfd
+#define USB_DEVICE_ID_TOUCHPACK_RTS	0x1688
+
+#define USB_VENDOR_ID_TPV		0x25aa
+#define USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN	0x8883
+
+#define USB_VENDOR_ID_TURBOX		0x062a
+#define USB_DEVICE_ID_TURBOX_KEYBOARD	0x0201
+#define USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART	0x7100
+
+#define USB_VENDOR_ID_TWINHAN		0x6253
+#define USB_DEVICE_ID_TWINHAN_IR_REMOTE	0x0100
+
+#define USB_VENDOR_ID_UCLOGIC		0x5543
+#define USB_DEVICE_ID_UCLOGIC_TABLET_PF1209	0x0042
+#define USB_DEVICE_ID_UCLOGIC_TABLET_KNA5	0x6001
+#define USB_DEVICE_ID_UCLOGIC_TABLET_TWA60	0x0064
+#define USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U	0x0003
+#define USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U	0x0004
+#define USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U	0x0005
+#define USB_DEVICE_ID_UCLOGIC_TABLET_WP1062	0x0064
+#define USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850	0x0522
+#define USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60	0x0781
+
+#define USB_VENDOR_ID_UNITEC	0x227d
+#define USB_DEVICE_ID_UNITEC_USB_TOUCH_0709	0x0709
+#define USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19	0x0a19
+
+#define USB_VENDOR_ID_VERNIER		0x08f7
+#define USB_DEVICE_ID_VERNIER_LABPRO	0x0001
+#define USB_DEVICE_ID_VERNIER_GOTEMP	0x0002
+#define USB_DEVICE_ID_VERNIER_SKIP	0x0003
+#define USB_DEVICE_ID_VERNIER_CYCLOPS	0x0004
+#define USB_DEVICE_ID_VERNIER_LCSPEC	0x0006
+
+#define USB_VENDOR_ID_WACOM		0x056a
+#define USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH	0x81
+#define USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH   0x00BD
+
+#define USB_VENDOR_ID_WALTOP				0x172f
+#define USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH	0x0032
+#define USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH	0x0034
+#define USB_DEVICE_ID_WALTOP_Q_PAD			0x0037
+#define USB_DEVICE_ID_WALTOP_PID_0038			0x0038
+#define USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH	0x0501
+#define USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH	0x0500
+#define USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET	0x0502
+
+#define USB_VENDOR_ID_WISEGROUP		0x0925
+#define USB_DEVICE_ID_SMARTJOY_PLUS	0x0005
+#define USB_DEVICE_ID_1_PHIDGETSERVO_20	0x8101
+#define USB_DEVICE_ID_4_PHIDGETSERVO_20	0x8104
+#define USB_DEVICE_ID_8_8_4_IF_KIT	0x8201
+#define USB_DEVICE_ID_SUPER_JOY_BOX_3	0x8888
+#define USB_DEVICE_ID_QUAD_USB_JOYPAD	0x8800
+#define USB_DEVICE_ID_DUAL_USB_JOYPAD	0x8866
+
+#define USB_VENDOR_ID_WISEGROUP_LTD	0x6666
+#define USB_VENDOR_ID_WISEGROUP_LTD2	0x6677
+#define USB_DEVICE_ID_SMARTJOY_DUAL_PLUS 0x8802
+#define USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO 0x8801
+#define USB_DEVICE_ID_SUPER_DUAL_BOX_PRO 0x8802
+#define USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO 0x8804
+
+#define USB_VENDOR_ID_X_TENSIONS               0x1ae7
+#define USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE    0x9001
+
+#define USB_VENDOR_ID_XAT	0x2505
+#define USB_DEVICE_ID_XAT_CSR	0x0220
+
+#define USB_VENDOR_ID_XIROKU		0x1477
+#define USB_DEVICE_ID_XIROKU_SPX	0x1006
+#define USB_DEVICE_ID_XIROKU_MPX	0x1007
+#define USB_DEVICE_ID_XIROKU_CSR	0x100e
+#define USB_DEVICE_ID_XIROKU_SPX1	0x1021
+#define USB_DEVICE_ID_XIROKU_CSR1	0x1022
+#define USB_DEVICE_ID_XIROKU_MPX1	0x1023
+#define USB_DEVICE_ID_XIROKU_SPX2	0x1024
+#define USB_DEVICE_ID_XIROKU_CSR2	0x1025
+#define USB_DEVICE_ID_XIROKU_MPX2	0x1026
+
+#define USB_VENDOR_ID_YEALINK		0x6993
+#define USB_DEVICE_ID_YEALINK_P1K_P4K_B2K	0xb001
+
+#define USB_VENDOR_ID_ZEROPLUS		0x0c12
+
+#define USB_VENDOR_ID_ZYDACRON	0x13EC
+#define USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL	0x0006
+
+#define USB_VENDOR_ID_ZYTRONIC		0x14c8
+#define USB_DEVICE_ID_ZYTRONIC_ZXY100	0x0005
+
+#define USB_VENDOR_ID_PRIMAX	0x0461
+#define USB_DEVICE_ID_PRIMAX_KEYBOARD	0x4e05
+
+#endif
diff --git a/compat/kfifo.c b/compat/kfifo.c
new file mode 100644
index 0000000..96e1bdf
--- /dev/null
+++ b/compat/kfifo.c
@@ -0,0 +1,608 @@
+/*
+ * A generic kernel FIFO implementation
+ *
+ * Copyright (C) 2009/2010 Stefani Seibold <stefani@seibold.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/log2.h>
+#include <linux/uaccess.h>
+#include <linux/kfifo.h>
+
+/*
+ * internal helper to calculate the unused elements in a fifo
+ */
+static inline unsigned int kfifo_unused(struct __kfifo *fifo)
+{
+	return (fifo->mask + 1) - (fifo->in - fifo->out);
+}
+
+int __kfifo_alloc(struct __kfifo *fifo, unsigned int size,
+		size_t esize, gfp_t gfp_mask)
+{
+	/*
+	 * round down to the next power of 2, since our 'let the indices
+	 * wrap' technique works only in this case.
+	 */
+	if (!is_power_of_2(size))
+		size = rounddown_pow_of_two(size);
+
+	fifo->in = 0;
+	fifo->out = 0;
+	fifo->esize = esize;
+
+	if (size < 2) {
+		fifo->data = NULL;
+		fifo->mask = 0;
+		return -EINVAL;
+	}
+
+	fifo->data = kmalloc(size * esize, gfp_mask);
+
+	if (!fifo->data) {
+		fifo->mask = 0;
+		return -ENOMEM;
+	}
+	fifo->mask = size - 1;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(__kfifo_alloc);
+
+void __kfifo_free(struct __kfifo *fifo)
+{
+	kfree(fifo->data);
+	fifo->in = 0;
+	fifo->out = 0;
+	fifo->esize = 0;
+	fifo->data = NULL;
+	fifo->mask = 0;
+}
+EXPORT_SYMBOL_GPL(__kfifo_free);
+
+int __kfifo_init(struct __kfifo *fifo, void *buffer,
+		unsigned int size, size_t esize)
+{
+	size /= esize;
+
+	if (!is_power_of_2(size))
+		size = rounddown_pow_of_two(size);
+
+	fifo->in = 0;
+	fifo->out = 0;
+	fifo->esize = esize;
+	fifo->data = buffer;
+
+	if (size < 2) {
+		fifo->mask = 0;
+		return -EINVAL;
+	}
+	fifo->mask = size - 1;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(__kfifo_init);
+
+static void kfifo_copy_in(struct __kfifo *fifo, const void *src,
+		unsigned int len, unsigned int off)
+{
+	unsigned int size = fifo->mask + 1;
+	unsigned int esize = fifo->esize;
+	unsigned int l;
+
+	off &= fifo->mask;
+	if (esize != 1) {
+		off *= esize;
+		size *= esize;
+		len *= esize;
+	}
+	l = min(len, size - off);
+
+	memcpy(fifo->data + off, src, l);
+	memcpy(fifo->data, src + l, len - l);
+	/*
+	 * make sure that the data in the fifo is up to date before
+	 * incrementing the fifo->in index counter
+	 */
+	smp_wmb();
+}
+
+unsigned int __kfifo_in(struct __kfifo *fifo,
+		const void *buf, unsigned int len)
+{
+	unsigned int l;
+
+	l = kfifo_unused(fifo);
+	if (len > l)
+		len = l;
+
+	kfifo_copy_in(fifo, buf, len, fifo->in);
+	fifo->in += len;
+	return len;
+}
+EXPORT_SYMBOL_GPL(__kfifo_in);
+
+static void kfifo_copy_out(struct __kfifo *fifo, void *dst,
+		unsigned int len, unsigned int off)
+{
+	unsigned int size = fifo->mask + 1;
+	unsigned int esize = fifo->esize;
+	unsigned int l;
+
+	off &= fifo->mask;
+	if (esize != 1) {
+		off *= esize;
+		size *= esize;
+		len *= esize;
+	}
+	l = min(len, size - off);
+
+	memcpy(dst, fifo->data + off, l);
+	memcpy(dst + l, fifo->data, len - l);
+	/*
+	 * make sure that the data is copied before
+	 * incrementing the fifo->out index counter
+	 */
+	smp_wmb();
+}
+
+unsigned int __kfifo_out_peek(struct __kfifo *fifo,
+		void *buf, unsigned int len)
+{
+	unsigned int l;
+
+	l = fifo->in - fifo->out;
+	if (len > l)
+		len = l;
+
+	kfifo_copy_out(fifo, buf, len, fifo->out);
+	return len;
+}
+EXPORT_SYMBOL_GPL(__kfifo_out_peek);
+
+unsigned int __kfifo_out(struct __kfifo *fifo,
+		void *buf, unsigned int len)
+{
+	len = __kfifo_out_peek(fifo, buf, len);
+	fifo->out += len;
+	return len;
+}
+EXPORT_SYMBOL_GPL(__kfifo_out);
+
+static unsigned long kfifo_copy_from_user(struct __kfifo *fifo,
+	const void __user *from, unsigned int len, unsigned int off,
+	unsigned int *copied)
+{
+	unsigned int size = fifo->mask + 1;
+	unsigned int esize = fifo->esize;
+	unsigned int l;
+	unsigned long ret;
+
+	off &= fifo->mask;
+	if (esize != 1) {
+		off *= esize;
+		size *= esize;
+		len *= esize;
+	}
+	l = min(len, size - off);
+
+	ret = copy_from_user(fifo->data + off, from, l);
+	if (unlikely(ret))
+		ret = DIV_ROUND_UP(ret + len - l, esize);
+	else {
+		ret = copy_from_user(fifo->data, from + l, len - l);
+		if (unlikely(ret))
+			ret = DIV_ROUND_UP(ret, esize);
+	}
+	/*
+	 * make sure that the data in the fifo is up to date before
+	 * incrementing the fifo->in index counter
+	 */
+	smp_wmb();
+	*copied = len - ret;
+	/* return the number of elements which are not copied */
+	return ret;
+}
+
+int __kfifo_from_user(struct __kfifo *fifo, const void __user *from,
+		unsigned long len, unsigned int *copied)
+{
+	unsigned int l;
+	unsigned long ret;
+	unsigned int esize = fifo->esize;
+	int err;
+
+	if (esize != 1)
+		len /= esize;
+
+	l = kfifo_unused(fifo);
+	if (len > l)
+		len = l;
+
+	ret = kfifo_copy_from_user(fifo, from, len, fifo->in, copied);
+	if (unlikely(ret)) {
+		len -= ret;
+		err = -EFAULT;
+	} else
+		err = 0;
+	fifo->in += len;
+	return err;
+}
+EXPORT_SYMBOL_GPL(__kfifo_from_user);
+
+static unsigned long kfifo_copy_to_user(struct __kfifo *fifo, void __user *to,
+		unsigned int len, unsigned int off, unsigned int *copied)
+{
+	unsigned int l;
+	unsigned long ret;
+	unsigned int size = fifo->mask + 1;
+	unsigned int esize = fifo->esize;
+
+	off &= fifo->mask;
+	if (esize != 1) {
+		off *= esize;
+		size *= esize;
+		len *= esize;
+	}
+	l = min(len, size - off);
+
+	ret = copy_to_user(to, fifo->data + off, l);
+	if (unlikely(ret))
+		ret = DIV_ROUND_UP(ret + len - l, esize);
+	else {
+		ret = copy_to_user(to + l, fifo->data, len - l);
+		if (unlikely(ret))
+			ret = DIV_ROUND_UP(ret, esize);
+	}
+	/*
+	 * make sure that the data is copied before
+	 * incrementing the fifo->out index counter
+	 */
+	smp_wmb();
+	*copied = len - ret;
+	/* return the number of elements which are not copied */
+	return ret;
+}
+
+int __kfifo_to_user(struct __kfifo *fifo, void __user *to,
+		unsigned long len, unsigned int *copied)
+{
+	unsigned int l;
+	unsigned long ret;
+	unsigned int esize = fifo->esize;
+	int err;
+
+	if (esize != 1)
+		len /= esize;
+
+	l = fifo->in - fifo->out;
+	if (len > l)
+		len = l;
+	ret = kfifo_copy_to_user(fifo, to, len, fifo->out, copied);
+	if (unlikely(ret)) {
+		len -= ret;
+		err = -EFAULT;
+	} else
+		err = 0;
+	fifo->out += len;
+	return err;
+}
+EXPORT_SYMBOL_GPL(__kfifo_to_user);
+
+static int setup_sgl_buf(struct scatterlist *sgl, void *buf,
+		int nents, unsigned int len)
+{
+	int n;
+	unsigned int l;
+	unsigned int off;
+	struct page *page;
+
+	if (!nents)
+		return 0;
+
+	if (!len)
+		return 0;
+
+	n = 0;
+	page = virt_to_page(buf);
+	off = offset_in_page(buf);
+	l = 0;
+
+	while (len >= l + PAGE_SIZE - off) {
+		struct page *npage;
+
+		l += PAGE_SIZE;
+		buf += PAGE_SIZE;
+		npage = virt_to_page(buf);
+		if (page_to_phys(page) != page_to_phys(npage) - l) {
+			sg_set_page(sgl, page, l - off, off);
+			sgl = sg_next(sgl);
+			if (++n == nents || sgl == NULL)
+				return n;
+			page = npage;
+			len -= l - off;
+			l = off = 0;
+		}
+	}
+	sg_set_page(sgl, page, len, off);
+	return n + 1;
+}
+
+static unsigned int setup_sgl(struct __kfifo *fifo, struct scatterlist *sgl,
+		int nents, unsigned int len, unsigned int off)
+{
+	unsigned int size = fifo->mask + 1;
+	unsigned int esize = fifo->esize;
+	unsigned int l;
+	unsigned int n;
+
+	off &= fifo->mask;
+	if (esize != 1) {
+		off *= esize;
+		size *= esize;
+		len *= esize;
+	}
+	l = min(len, size - off);
+
+	n = setup_sgl_buf(sgl, fifo->data + off, nents, l);
+	n += setup_sgl_buf(sgl + n, fifo->data, nents - n, len - l);
+
+	return n;
+}
+
+unsigned int __kfifo_dma_in_prepare(struct __kfifo *fifo,
+		struct scatterlist *sgl, int nents, unsigned int len)
+{
+	unsigned int l;
+
+	l = kfifo_unused(fifo);
+	if (len > l)
+		len = l;
+
+	return setup_sgl(fifo, sgl, nents, len, fifo->in);
+}
+EXPORT_SYMBOL_GPL(__kfifo_dma_in_prepare);
+
+unsigned int __kfifo_dma_out_prepare(struct __kfifo *fifo,
+		struct scatterlist *sgl, int nents, unsigned int len)
+{
+	unsigned int l;
+
+	l = fifo->in - fifo->out;
+	if (len > l)
+		len = l;
+
+	return setup_sgl(fifo, sgl, nents, len, fifo->out);
+}
+EXPORT_SYMBOL_GPL(__kfifo_dma_out_prepare);
+
+unsigned int __kfifo_max_r(unsigned int len, size_t recsize)
+{
+	unsigned int max = (1 << (recsize << 3)) - 1;
+
+	if (len > max)
+		return max;
+	return len;
+}
+
+#define	__KFIFO_PEEK(data, out, mask) \
+	((data)[(out) & (mask)])
+/*
+ * __kfifo_peek_n internal helper function for determinate the length of
+ * the next record in the fifo
+ */
+static unsigned int __kfifo_peek_n(struct __kfifo *fifo, size_t recsize)
+{
+	unsigned int l;
+	unsigned int mask = fifo->mask;
+	unsigned char *data = fifo->data;
+
+	l = __KFIFO_PEEK(data, fifo->out, mask);
+
+	if (--recsize)
+		l |= __KFIFO_PEEK(data, fifo->out + 1, mask) << 8;
+
+	return l;
+}
+
+#define	__KFIFO_POKE(data, in, mask, val) \
+	( \
+	(data)[(in) & (mask)] = (unsigned char)(val) \
+	)
+
+/*
+ * __kfifo_poke_n internal helper function for storeing the length of
+ * the record into the fifo
+ */
+static void __kfifo_poke_n(struct __kfifo *fifo, unsigned int n, size_t recsize)
+{
+	unsigned int mask = fifo->mask;
+	unsigned char *data = fifo->data;
+
+	__KFIFO_POKE(data, fifo->in, mask, n);
+
+	if (recsize > 1)
+		__KFIFO_POKE(data, fifo->in + 1, mask, n >> 8);
+}
+
+unsigned int __kfifo_len_r(struct __kfifo *fifo, size_t recsize)
+{
+	return __kfifo_peek_n(fifo, recsize);
+}
+EXPORT_SYMBOL_GPL(__kfifo_len_r);
+
+unsigned int __kfifo_in_r(struct __kfifo *fifo, const void *buf,
+		unsigned int len, size_t recsize)
+{
+	if (len + recsize > kfifo_unused(fifo))
+		return 0;
+
+	__kfifo_poke_n(fifo, len, recsize);
+
+	kfifo_copy_in(fifo, buf, len, fifo->in + recsize);
+	fifo->in += len + recsize;
+	return len;
+}
+EXPORT_SYMBOL_GPL(__kfifo_in_r);
+
+static unsigned int kfifo_out_copy_r(struct __kfifo *fifo,
+	void *buf, unsigned int len, size_t recsize, unsigned int *n)
+{
+	*n = __kfifo_peek_n(fifo, recsize);
+
+	if (len > *n)
+		len = *n;
+
+	kfifo_copy_out(fifo, buf, len, fifo->out + recsize);
+	return len;
+}
+
+unsigned int __kfifo_out_peek_r(struct __kfifo *fifo, void *buf,
+		unsigned int len, size_t recsize)
+{
+	unsigned int n;
+
+	if (fifo->in == fifo->out)
+		return 0;
+
+	return kfifo_out_copy_r(fifo, buf, len, recsize, &n);
+}
+EXPORT_SYMBOL_GPL(__kfifo_out_peek_r);
+
+unsigned int __kfifo_out_r(struct __kfifo *fifo, void *buf,
+		unsigned int len, size_t recsize)
+{
+	unsigned int n;
+
+	if (fifo->in == fifo->out)
+		return 0;
+
+	len = kfifo_out_copy_r(fifo, buf, len, recsize, &n);
+	fifo->out += n + recsize;
+	return len;
+}
+EXPORT_SYMBOL_GPL(__kfifo_out_r);
+
+void __kfifo_skip_r(struct __kfifo *fifo, size_t recsize)
+{
+	unsigned int n;
+
+	n = __kfifo_peek_n(fifo, recsize);
+	fifo->out += n + recsize;
+}
+EXPORT_SYMBOL_GPL(__kfifo_skip_r);
+
+int __kfifo_from_user_r(struct __kfifo *fifo, const void __user *from,
+	unsigned long len, unsigned int *copied, size_t recsize)
+{
+	unsigned long ret;
+
+	len = __kfifo_max_r(len, recsize);
+
+	if (len + recsize > kfifo_unused(fifo)) {
+		*copied = 0;
+		return 0;
+	}
+
+	__kfifo_poke_n(fifo, len, recsize);
+
+	ret = kfifo_copy_from_user(fifo, from, len, fifo->in + recsize, copied);
+	if (unlikely(ret)) {
+		*copied = 0;
+		return -EFAULT;
+	}
+	fifo->in += len + recsize;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(__kfifo_from_user_r);
+
+int __kfifo_to_user_r(struct __kfifo *fifo, void __user *to,
+	unsigned long len, unsigned int *copied, size_t recsize)
+{
+	unsigned long ret;
+	unsigned int n;
+
+	if (fifo->in == fifo->out) {
+		*copied = 0;
+		return 0;
+	}
+
+	n = __kfifo_peek_n(fifo, recsize);
+	if (len > n)
+		len = n;
+
+	ret = kfifo_copy_to_user(fifo, to, len, fifo->out + recsize, copied);
+	if (unlikely(ret)) {
+		*copied = 0;
+		return -EFAULT;
+	}
+	fifo->out += n + recsize;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(__kfifo_to_user_r);
+
+unsigned int __kfifo_dma_in_prepare_r(struct __kfifo *fifo,
+	struct scatterlist *sgl, int nents, unsigned int len, size_t recsize)
+{
+	if (!nents)
+		BUG();
+
+	len = __kfifo_max_r(len, recsize);
+
+	if (len + recsize > kfifo_unused(fifo))
+		return 0;
+
+	return setup_sgl(fifo, sgl, nents, len, fifo->in + recsize);
+}
+EXPORT_SYMBOL_GPL(__kfifo_dma_in_prepare_r);
+
+void __kfifo_dma_in_finish_r(struct __kfifo *fifo,
+	unsigned int len, size_t recsize)
+{
+	len = __kfifo_max_r(len, recsize);
+	__kfifo_poke_n(fifo, len, recsize);
+	fifo->in += len + recsize;
+}
+EXPORT_SYMBOL_GPL(__kfifo_dma_in_finish_r);
+
+unsigned int __kfifo_dma_out_prepare_r(struct __kfifo *fifo,
+	struct scatterlist *sgl, int nents, unsigned int len, size_t recsize)
+{
+	if (!nents)
+		BUG();
+
+	len = __kfifo_max_r(len, recsize);
+
+	if (len + recsize > fifo->in - fifo->out)
+		return 0;
+
+	return setup_sgl(fifo, sgl, nents, len, fifo->out + recsize);
+}
+EXPORT_SYMBOL_GPL(__kfifo_dma_out_prepare_r);
+
+void __kfifo_dma_out_finish_r(struct __kfifo *fifo, size_t recsize)
+{
+	unsigned int len;
+
+	len = __kfifo_peek_n(fifo, recsize);
+	fifo->out += len + recsize;
+}
+EXPORT_SYMBOL_GPL(__kfifo_dma_out_finish_r);
diff --git a/compat/kstrtox.c b/compat/kstrtox.c
new file mode 100644
index 0000000..fdbc56e
--- /dev/null
+++ b/compat/kstrtox.c
@@ -0,0 +1,236 @@
+/*
+ * Convert integer string representation to an integer.
+ * If an integer doesn't fit into specified type, -E is returned.
+ *
+ * Integer starts with optional sign.
+ * kstrtou*() functions do not accept sign "-".
+ *
+ * Radix 0 means autodetection: leading "0x" implies radix 16,
+ * leading "0" implies radix 8, otherwise radix is 10.
+ * Autodetection hints work after optional sign, but not before.
+ *
+ * If -E is returned, result is not touched.
+ */
+#include <linux/kernel.h>
+/* 
+ * kstrto* was included in kernel 2.6.38.4 and causes conflicts with the
+ * version included in compat-drivers. We use strict_strtol to check if
+ * kstrto* is already available.
+ */
+#ifndef strict_strtoll
+
+#include <linux/ctype.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+static inline char _tolower(const char c)
+{
+	return c | 0x20;
+}
+
+static int _kstrtoull(const char *s, unsigned int base, unsigned long long *res)
+{
+	unsigned long long acc;
+	int ok;
+
+	if (base == 0) {
+		if (s[0] == '0') {
+			if (_tolower(s[1]) == 'x' && isxdigit(s[2]))
+				base = 16;
+			else
+				base = 8;
+		} else
+			base = 10;
+	}
+	if (base == 16 && s[0] == '0' && _tolower(s[1]) == 'x')
+		s += 2;
+
+	acc = 0;
+	ok = 0;
+	while (*s) {
+		unsigned int val;
+
+		if ('0' <= *s && *s <= '9')
+			val = *s - '0';
+		else if ('a' <= _tolower(*s) && _tolower(*s) <= 'f')
+			val = _tolower(*s) - 'a' + 10;
+		else if (*s == '\n') {
+			if (*(s + 1) == '\0')
+				break;
+			else
+				return -EINVAL;
+		} else
+			return -EINVAL;
+
+		if (val >= base)
+			return -EINVAL;
+		if (acc > div_u64(ULLONG_MAX - val, base))
+			return -ERANGE;
+		acc = acc * base + val;
+		ok = 1;
+
+		s++;
+	}
+	if (!ok)
+		return -EINVAL;
+	*res = acc;
+	return 0;
+}
+
+int kstrtoull(const char *s, unsigned int base, unsigned long long *res)
+{
+	if (s[0] == '+')
+		s++;
+	return _kstrtoull(s, base, res);
+}
+EXPORT_SYMBOL_GPL(kstrtoull);
+
+int kstrtoll(const char *s, unsigned int base, long long *res)
+{
+	unsigned long long tmp;
+	int rv;
+
+	if (s[0] == '-') {
+		rv = _kstrtoull(s + 1, base, &tmp);
+		if (rv < 0)
+			return rv;
+		if ((long long)(-tmp) >= 0)
+			return -ERANGE;
+		*res = -tmp;
+	} else {
+		rv = kstrtoull(s, base, &tmp);
+		if (rv < 0)
+			return rv;
+		if ((long long)tmp < 0)
+			return -ERANGE;
+		*res = tmp;
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(kstrtoll);
+
+/* Internal, do not use. */
+int _kstrtoul(const char *s, unsigned int base, unsigned long *res)
+{
+	unsigned long long tmp;
+	int rv;
+
+	rv = kstrtoull(s, base, &tmp);
+	if (rv < 0)
+		return rv;
+	if (tmp != (unsigned long long)(unsigned long)tmp)
+		return -ERANGE;
+	*res = tmp;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(_kstrtoul);
+
+/* Internal, do not use. */
+int _kstrtol(const char *s, unsigned int base, long *res)
+{
+	long long tmp;
+	int rv;
+
+	rv = kstrtoll(s, base, &tmp);
+	if (rv < 0)
+		return rv;
+	if (tmp != (long long)(long)tmp)
+		return -ERANGE;
+	*res = tmp;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(_kstrtol);
+
+int kstrtouint(const char *s, unsigned int base, unsigned int *res)
+{
+	unsigned long long tmp;
+	int rv;
+
+	rv = kstrtoull(s, base, &tmp);
+	if (rv < 0)
+		return rv;
+	if (tmp != (unsigned long long)(unsigned int)tmp)
+		return -ERANGE;
+	*res = tmp;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(kstrtouint);
+
+int kstrtoint(const char *s, unsigned int base, int *res)
+{
+	long long tmp;
+	int rv;
+
+	rv = kstrtoll(s, base, &tmp);
+	if (rv < 0)
+		return rv;
+	if (tmp != (long long)(int)tmp)
+		return -ERANGE;
+	*res = tmp;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(kstrtoint);
+
+int kstrtou16(const char *s, unsigned int base, u16 *res)
+{
+	unsigned long long tmp;
+	int rv;
+
+	rv = kstrtoull(s, base, &tmp);
+	if (rv < 0)
+		return rv;
+	if (tmp != (unsigned long long)(u16)tmp)
+		return -ERANGE;
+	*res = tmp;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(kstrtou16);
+
+int kstrtos16(const char *s, unsigned int base, s16 *res)
+{
+	long long tmp;
+	int rv;
+
+	rv = kstrtoll(s, base, &tmp);
+	if (rv < 0)
+		return rv;
+	if (tmp != (long long)(s16)tmp)
+		return -ERANGE;
+	*res = tmp;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(kstrtos16);
+
+int kstrtou8(const char *s, unsigned int base, u8 *res)
+{
+	unsigned long long tmp;
+	int rv;
+
+	rv = kstrtoull(s, base, &tmp);
+	if (rv < 0)
+		return rv;
+	if (tmp != (unsigned long long)(u8)tmp)
+		return -ERANGE;
+	*res = tmp;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(kstrtou8);
+
+int kstrtos8(const char *s, unsigned int base, s8 *res)
+{
+	long long tmp;
+	int rv;
+
+	rv = kstrtoll(s, base, &tmp);
+	if (rv < 0)
+		return rv;
+	if (tmp != (long long)(s8)tmp)
+		return -ERANGE;
+	*res = tmp;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(kstrtos8);
+#endif /* #ifndef strict_strtol */
diff --git a/compat/lib-average.c b/compat/lib-average.c
new file mode 100644
index 0000000..99a67e6
--- /dev/null
+++ b/compat/lib-average.c
@@ -0,0 +1,62 @@
+/*
+ * lib/average.c
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2.  See the file COPYING for more details.
+ */
+
+#include <linux/export.h>
+#include <linux/average.h>
+#include <linux/kernel.h>
+#include <linux/bug.h>
+#include <linux/log2.h>
+
+/**
+ * DOC: Exponentially Weighted Moving Average (EWMA)
+ *
+ * These are generic functions for calculating Exponentially Weighted Moving
+ * Averages (EWMA). We keep a structure with the EWMA parameters and a scaled
+ * up internal representation of the average value to prevent rounding errors.
+ * The factor for scaling up and the exponential weight (or decay rate) have to
+ * be specified thru the init fuction. The structure should not be accessed
+ * directly but only thru the helper functions.
+ */
+
+/**
+ * ewma_init() - Initialize EWMA parameters
+ * @avg: Average structure
+ * @factor: Factor to use for the scaled up internal value. The maximum value
+ *	of averages can be ULONG_MAX/(factor*weight). For performance reasons
+ *	factor has to be a power of 2.
+ * @weight: Exponential weight, or decay rate. This defines how fast the
+ *	influence of older values decreases. For performance reasons weight has
+ *	to be a power of 2.
+ *
+ * Initialize the EWMA parameters for a given struct ewma @avg.
+ */
+void ewma_init(struct ewma *avg, unsigned long factor, unsigned long weight)
+{
+	WARN_ON(!is_power_of_2(weight) || !is_power_of_2(factor));
+
+	avg->weight = ilog2(weight);
+	avg->factor = ilog2(factor);
+	avg->internal = 0;
+}
+EXPORT_SYMBOL(ewma_init);
+
+/**
+ * ewma_add() - Exponentially weighted moving average (EWMA)
+ * @avg: Average structure
+ * @val: Current value
+ *
+ * Add a sample to the average.
+ */
+struct ewma *ewma_add(struct ewma *avg, unsigned long val)
+{
+	avg->internal = avg->internal  ?
+		(((avg->internal << avg->weight) - avg->internal) +
+			(val << avg->factor)) >> avg->weight :
+		(val << avg->factor);
+	return avg;
+}
+EXPORT_SYMBOL(ewma_add);
diff --git a/compat/lib-radix-tree-helpers.c b/compat/lib-radix-tree-helpers.c
new file mode 100644
index 0000000..837de04
--- /dev/null
+++ b/compat/lib-radix-tree-helpers.c
@@ -0,0 +1,266 @@
+/*
+ * Copyright (C) 2013 Konstantin Khlebnikov
+ * Copyright (c) 2013 Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * Backports radix_tree_next_chunk()
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2, or (at
+ * your option) any later version.
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/export.h>
+#include <linux/radix-tree.h>
+#include <linux/percpu.h>
+#include <linux/slab.h>
+#include <linux/notifier.h>
+#include <linux/cpu.h>
+#include <linux/string.h>
+#include <linux/bitops.h>
+#include <linux/rcupdate.h>
+
+#ifdef __KERNEL__
+#define RADIX_TREE_MAP_SHIFT	(CONFIG_BASE_SMALL ? 4 : 6)
+#else
+#define RADIX_TREE_MAP_SHIFT	3	/* For more stressful testing */
+#endif
+
+#define RADIX_TREE_MAP_SIZE	(1UL << RADIX_TREE_MAP_SHIFT)
+#define RADIX_TREE_MAP_MASK	(RADIX_TREE_MAP_SIZE-1)
+
+#define RADIX_TREE_TAG_LONGS	\
+	((RADIX_TREE_MAP_SIZE + BITS_PER_LONG - 1) / BITS_PER_LONG)
+
+struct radix_tree_node {
+	unsigned int	height;		/* Height from the bottom */
+	unsigned int	count;
+	union {
+		struct radix_tree_node *parent;	/* Used when ascending tree */
+		struct rcu_head	rcu_head;	/* Used when freeing node */
+	};
+	void __rcu	*slots[RADIX_TREE_MAP_SIZE];
+	unsigned long	tags[RADIX_TREE_MAX_TAGS][RADIX_TREE_TAG_LONGS];
+};
+
+static inline void *ptr_to_indirect(void *ptr)
+{
+	return (void *)((unsigned long)ptr | RADIX_TREE_INDIRECT_PTR);
+}
+
+static inline void *indirect_to_ptr(void *ptr)
+{
+	return (void *)((unsigned long)ptr & ~RADIX_TREE_INDIRECT_PTR);
+}
+
+static inline gfp_t root_gfp_mask(struct radix_tree_root *root)
+{
+	return root->gfp_mask & __GFP_BITS_MASK;
+}
+
+static inline void tag_set(struct radix_tree_node *node, unsigned int tag,
+		int offset)
+{
+	__set_bit(offset, node->tags[tag]);
+}
+
+static inline void tag_clear(struct radix_tree_node *node, unsigned int tag,
+		int offset)
+{
+	__clear_bit(offset, node->tags[tag]);
+}
+
+static inline int tag_get(struct radix_tree_node *node, unsigned int tag,
+		int offset)
+{
+	return test_bit(offset, node->tags[tag]);
+}
+
+static inline void root_tag_set(struct radix_tree_root *root, unsigned int tag)
+{
+	root->gfp_mask |= (__force gfp_t)(1 << (tag + __GFP_BITS_SHIFT));
+}
+
+static inline void root_tag_clear(struct radix_tree_root *root, unsigned int tag)
+{
+	root->gfp_mask &= (__force gfp_t)~(1 << (tag + __GFP_BITS_SHIFT));
+}
+
+static inline void root_tag_clear_all(struct radix_tree_root *root)
+{
+	root->gfp_mask &= __GFP_BITS_MASK;
+}
+
+static inline int root_tag_get(struct radix_tree_root *root, unsigned int tag)
+{
+	return (__force unsigned)root->gfp_mask & (1 << (tag + __GFP_BITS_SHIFT));
+}
+
+/*
+ * Returns 1 if any slot in the node has this tag set.
+ * Otherwise returns 0.
+ */
+static inline int any_tag_set(struct radix_tree_node *node, unsigned int tag)
+{
+	int idx;
+	for (idx = 0; idx < RADIX_TREE_TAG_LONGS; idx++) {
+		if (node->tags[tag][idx])
+			return 1;
+	}
+	return 0;
+}
+
+/**
+ * radix_tree_find_next_bit - find the next set bit in a memory region
+ *
+ * @addr: The address to base the search on
+ * @size: The bitmap size in bits
+ * @offset: The bitnumber to start searching at
+ *
+ * Unrollable variant of find_next_bit() for constant size arrays.
+ * Tail bits starting from size to roundup(size, BITS_PER_LONG) must be zero.
+ * Returns next bit offset, or size if nothing found.
+ */
+static __always_inline unsigned long
+radix_tree_find_next_bit(const unsigned long *addr,
+			 unsigned long size, unsigned long offset)
+{
+	if (!__builtin_constant_p(size))
+		return find_next_bit(addr, size, offset);
+
+	if (offset < size) {
+		unsigned long tmp;
+
+		addr += offset / BITS_PER_LONG;
+		tmp = *addr >> (offset % BITS_PER_LONG);
+		if (tmp)
+			return __ffs(tmp) + offset;
+		offset = (offset + BITS_PER_LONG) & ~(BITS_PER_LONG - 1);
+		while (offset < size) {
+			tmp = *++addr;
+			if (tmp)
+				return __ffs(tmp) + offset;
+			offset += BITS_PER_LONG;
+		}
+	}
+	return size;
+}
+
+/**
+ * radix_tree_next_chunk - find next chunk of slots for iteration
+ *
+ * @root:	radix tree root
+ * @iter:	iterator state
+ * @flags:	RADIX_TREE_ITER_* flags and tag index
+ * Returns:	pointer to chunk first slot, or NULL if iteration is over
+ */
+void **radix_tree_next_chunk(struct radix_tree_root *root,
+			     struct radix_tree_iter *iter, unsigned flags)
+{
+	unsigned shift, tag = flags & RADIX_TREE_ITER_TAG_MASK;
+	struct radix_tree_node *rnode, *node;
+	unsigned long index, offset;
+
+	if ((flags & RADIX_TREE_ITER_TAGGED) && !root_tag_get(root, tag))
+		return NULL;
+
+	/*
+	 * Catch next_index overflow after ~0UL. iter->index never overflows
+	 * during iterating; it can be zero only at the beginning.
+	 * And we cannot overflow iter->next_index in a single step,
+	 * because RADIX_TREE_MAP_SHIFT < BITS_PER_LONG.
+	 *
+	 * This condition also used by radix_tree_next_slot() to stop
+	 * contiguous iterating, and forbid swithing to the next chunk.
+	 */
+	index = iter->next_index;
+	if (!index && iter->index)
+		return NULL;
+
+	rnode = rcu_dereference_raw(root->rnode);
+	if (radix_tree_is_indirect_ptr(rnode)) {
+		rnode = indirect_to_ptr(rnode);
+	} else if (rnode && !index) {
+		/* Single-slot tree */
+		iter->index = 0;
+		iter->next_index = 1;
+		iter->tags = 1;
+		return (void **)&root->rnode;
+	} else
+		return NULL;
+
+restart:
+	shift = (rnode->height - 1) * RADIX_TREE_MAP_SHIFT;
+	offset = index >> shift;
+
+	/* Index outside of the tree */
+	if (offset >= RADIX_TREE_MAP_SIZE)
+		return NULL;
+
+	node = rnode;
+	while (1) {
+		if ((flags & RADIX_TREE_ITER_TAGGED) ?
+				!test_bit(offset, node->tags[tag]) :
+				!node->slots[offset]) {
+			/* Hole detected */
+			if (flags & RADIX_TREE_ITER_CONTIG)
+				return NULL;
+
+			if (flags & RADIX_TREE_ITER_TAGGED)
+				offset = radix_tree_find_next_bit(
+						node->tags[tag],
+						RADIX_TREE_MAP_SIZE,
+						offset + 1);
+			else
+				while (++offset	< RADIX_TREE_MAP_SIZE) {
+					if (node->slots[offset])
+						break;
+				}
+			index &= ~((RADIX_TREE_MAP_SIZE << shift) - 1);
+			index += offset << shift;
+			/* Overflow after ~0UL */
+			if (!index)
+				return NULL;
+			if (offset == RADIX_TREE_MAP_SIZE)
+				goto restart;
+		}
+
+		/* This is leaf-node */
+		if (!shift)
+			break;
+
+		node = rcu_dereference_raw(node->slots[offset]);
+		if (node == NULL)
+			goto restart;
+		shift -= RADIX_TREE_MAP_SHIFT;
+		offset = (index >> shift) & RADIX_TREE_MAP_MASK;
+	}
+
+	/* Update the iterator state */
+	iter->index = index;
+	iter->next_index = (index | RADIX_TREE_MAP_MASK) + 1;
+
+	/* Construct iter->tags bit-mask from node->tags[tag] array */
+	if (flags & RADIX_TREE_ITER_TAGGED) {
+		unsigned tag_long, tag_bit;
+
+		tag_long = offset / BITS_PER_LONG;
+		tag_bit  = offset % BITS_PER_LONG;
+		iter->tags = node->tags[tag][tag_long] >> tag_bit;
+		/* This never happens if RADIX_TREE_TAG_LONGS == 1 */
+		if (tag_long < RADIX_TREE_TAG_LONGS - 1) {
+			/* Pick tags from next element */
+			if (tag_bit)
+				iter->tags |= node->tags[tag][tag_long + 1] <<
+						(BITS_PER_LONG - tag_bit);
+			/* Clip chunk size, here only BITS_PER_LONG tags */
+			iter->next_index = index + BITS_PER_LONG;
+		}
+	}
+
+	return node->slots + offset;
+}
+EXPORT_SYMBOL_GPL(radix_tree_next_chunk);
diff --git a/compat/main.c b/compat/main.c
new file mode 100644
index 0000000..da64057
--- /dev/null
+++ b/compat/main.c
@@ -0,0 +1,85 @@
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pm_qos.h>
+#include <linux/workqueue.h>
+#include "compat-2.6.34.h"
+#include "backports.h"
+
+MODULE_AUTHOR("Luis R. Rodriguez");
+MODULE_DESCRIPTION("Kernel backport module");
+MODULE_LICENSE("GPL");
+
+#ifndef BACKPORTED_KERNEL_NAME
+#error "You need a BACKPORTED_KERNEL_NAME"
+#endif
+
+#ifndef BACKPORTED_KERNEL_VERSION
+#error "You need a BACKPORTED_KERNEL_VERSION"
+#endif
+
+#ifndef BACKPORTS_VERSION
+#error "You need a BACKPORTS_VERSION"
+#endif
+
+static char *backported_kernel_name = BACKPORTED_KERNEL_NAME;
+
+module_param(backported_kernel_name, charp, 0400);
+MODULE_PARM_DESC(backported_kernel_name,
+		 "The kernel tree name that was used for this backport (" BACKPORTED_KERNEL_NAME ")");
+
+#ifdef BACKPORTS_GIT_TRACKED 
+static char *backports_tracker_id = BACKPORTS_GIT_TRACKED;
+module_param(backports_tracker_id, charp, 0400);
+MODULE_PARM_DESC(backports_tracker_id,
+		 "The version of the tree containing this backport (" BACKPORTS_GIT_TRACKED ")");
+#else
+static char *backported_kernel_version = BACKPORTED_KERNEL_VERSION;
+static char *backports_version = BACKPORTS_VERSION;
+
+module_param(backported_kernel_version, charp, 0400);
+MODULE_PARM_DESC(backported_kernel_version,
+		 "The kernel version that was used for this backport (" BACKPORTED_KERNEL_VERSION ")");
+
+module_param(backports_version, charp, 0400);
+MODULE_PARM_DESC(backports_version,
+		 "The git version of the backports tree used to generate this backport (" BACKPORTS_VERSION ")");
+
+#endif
+
+void backport_dependency_symbol(void)
+{
+}
+EXPORT_SYMBOL_GPL(backport_dependency_symbol);
+
+
+static int __init backport_init(void)
+{
+	backport_pm_qos_power_init();
+	backport_system_workqueue_create();
+	backport_init_mmc_pm_flags();
+	dma_buf_init();
+
+	printk(KERN_INFO "Loading modules backported from " BACKPORTED_KERNEL_NAME
+#ifndef BACKPORTS_GIT_TRACKED
+		" version " BACKPORTED_KERNEL_VERSION
+#endif
+		"\n");
+#ifdef BACKPORTS_GIT_TRACKED
+	printk(KERN_INFO BACKPORTS_GIT_TRACKED "\n");
+#else
+	printk(KERN_INFO "Backport generated by backports.git " BACKPORTS_VERSION "\n");
+#endif
+
+        return 0;
+}
+subsys_initcall(backport_init);
+
+static void __exit backport_exit(void)
+{
+	backport_pm_qos_power_deinit();
+	backport_system_workqueue_destroy();
+
+        return;
+}
+module_exit(backport_exit);
+
diff --git a/compat/pm_qos_params.c b/compat/pm_qos_params.c
new file mode 100644
index 0000000..1f000ab
--- /dev/null
+++ b/compat/pm_qos_params.c
@@ -0,0 +1,478 @@
+#include <net/sock.h>
+#include <net/compat.h>
+
+/* This is the backport of pm-qos params for kernels <= 2.6.25 */
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25))
+
+/*
+ * This module exposes the interface to kernel space for specifying
+ * QoS dependencies.  It provides infrastructure for registration of:
+ *
+ * Dependents on a QoS value : register requirements
+ * Watchers of QoS value : get notified when target QoS value changes
+ *
+ * This QoS design is best effort based.  Dependents register their QoS needs.
+ * Watchers register to keep track of the current QoS needs of the system.
+ *
+ * There are 3 basic classes of QoS parameter: latency, timeout, throughput
+ * each have defined units:
+ * latency: usec
+ * timeout: usec <-- currently not used.
+ * throughput: kbs (kilo byte / sec)
+ *
+ * There are lists of pm_qos_objects each one wrapping requirements, notifiers
+ *
+ * User mode requirements on a QOS parameter register themselves to the
+ * subsystem by opening the device node /dev/... and writing there request to
+ * the node.  As long as the process holds a file handle open to the node the
+ * client continues to be accounted for.  Upon file release the usermode
+ * requirement is removed and a new qos target is computed.  This way when the
+ * requirement that the application has is cleaned up when closes the file
+ * pointer or exits the pm_qos_object will get an opportunity to clean up.
+ *
+ * Mark Gross <mgross@linux.intel.com>
+ */
+
+#include <linux/pm_qos_params.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/miscdevice.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+
+#include <linux/uaccess.h>
+
+/*
+ * locking rule: all changes to requirements or notifiers lists
+ * or pm_qos_object list and pm_qos_objects need to happen with pm_qos_lock
+ * held, taken with _irqsave.  One lock to rule them all
+ */
+struct requirement_list {
+	struct list_head list;
+	union {
+		s32 value;
+		s32 usec;
+		s32 kbps;
+	};
+	char *name;
+};
+
+static s32 max_compare(s32 v1, s32 v2);
+static s32 min_compare(s32 v1, s32 v2);
+
+struct pm_qos_object {
+	struct requirement_list requirements;
+	struct blocking_notifier_head *notifiers;
+	struct miscdevice pm_qos_power_miscdev;
+	char *name;
+	s32 default_value;
+	atomic_t target_value;
+	s32 (*comparitor)(s32, s32);
+};
+
+static struct pm_qos_object null_pm_qos;
+static BLOCKING_NOTIFIER_HEAD(cpu_dma_lat_notifier);
+static struct pm_qos_object cpu_dma_pm_qos = {
+	.requirements = {LIST_HEAD_INIT(cpu_dma_pm_qos.requirements.list)},
+	.notifiers = &cpu_dma_lat_notifier,
+	.name = "cpu_dma_latency",
+	.default_value = 2000 * USEC_PER_SEC,
+	.target_value = ATOMIC_INIT(2000 * USEC_PER_SEC),
+	.comparitor = min_compare
+};
+
+static BLOCKING_NOTIFIER_HEAD(network_lat_notifier);
+static struct pm_qos_object network_lat_pm_qos = {
+	.requirements = {LIST_HEAD_INIT(network_lat_pm_qos.requirements.list)},
+	.notifiers = &network_lat_notifier,
+	.name = "network_latency",
+	.default_value = 2000 * USEC_PER_SEC,
+	.target_value = ATOMIC_INIT(2000 * USEC_PER_SEC),
+	.comparitor = min_compare
+};
+
+
+static BLOCKING_NOTIFIER_HEAD(network_throughput_notifier);
+static struct pm_qos_object network_throughput_pm_qos = {
+	.requirements =
+		{LIST_HEAD_INIT(network_throughput_pm_qos.requirements.list)},
+	.notifiers = &network_throughput_notifier,
+	.name = "network_throughput",
+	.default_value = 0,
+	.target_value = ATOMIC_INIT(0),
+	.comparitor = max_compare
+};
+
+static BLOCKING_NOTIFIER_HEAD(system_bus_freq_notifier);
+static struct pm_qos_object system_bus_freq_pm_qos = {
+	.requirements =
+		{LIST_HEAD_INIT(system_bus_freq_pm_qos.requirements.list)},
+	.notifiers = &system_bus_freq_notifier,
+	.name = "system_bus_freq",
+	.default_value = 0,
+	.target_value = ATOMIC_INIT(0),
+	.comparitor = max_compare
+};
+
+
+static struct pm_qos_object *pm_qos_array[PM_QOS_NUM_CLASSES] = {
+	[PM_QOS_RESERVED] = &null_pm_qos,
+	[PM_QOS_CPU_DMA_LATENCY] = &cpu_dma_pm_qos,
+	[PM_QOS_NETWORK_LATENCY] = &network_lat_pm_qos,
+	[PM_QOS_NETWORK_THROUGHPUT] = &network_throughput_pm_qos,
+	[PM_QOS_SYSTEM_BUS_FREQ] = &system_bus_freq_pm_qos,
+};
+
+static DEFINE_SPINLOCK(pm_qos_lock);
+
+static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
+		size_t count, loff_t *f_pos);
+static int pm_qos_power_open(struct inode *inode, struct file *filp);
+static int pm_qos_power_release(struct inode *inode, struct file *filp);
+
+static const struct file_operations pm_qos_power_fops = {
+	.write = pm_qos_power_write,
+	.open = pm_qos_power_open,
+	.release = pm_qos_power_release,
+};
+
+/* static helper functions */
+static s32 max_compare(s32 v1, s32 v2)
+{
+	return max(v1, v2);
+}
+
+static s32 min_compare(s32 v1, s32 v2)
+{
+	return min(v1, v2);
+}
+
+
+static void update_target(int target)
+{
+	s32 extreme_value;
+	struct requirement_list *node;
+	unsigned long flags;
+	int call_notifier = 0;
+
+	spin_lock_irqsave(&pm_qos_lock, flags);
+	extreme_value = pm_qos_array[target]->default_value;
+	list_for_each_entry(node,
+			&pm_qos_array[target]->requirements.list, list) {
+		extreme_value = pm_qos_array[target]->comparitor(
+				extreme_value, node->value);
+	}
+	if (atomic_read(&pm_qos_array[target]->target_value) != extreme_value) {
+		call_notifier = 1;
+		atomic_set(&pm_qos_array[target]->target_value, extreme_value);
+		pr_debug(KERN_ERR "new target for qos %d is %d\n", target,
+			atomic_read(&pm_qos_array[target]->target_value));
+	}
+	spin_unlock_irqrestore(&pm_qos_lock, flags);
+
+	if (call_notifier)
+		blocking_notifier_call_chain(pm_qos_array[target]->notifiers,
+			(unsigned long) extreme_value, NULL);
+}
+
+static int register_pm_qos_misc(struct pm_qos_object *qos)
+{
+	qos->pm_qos_power_miscdev.minor = MISC_DYNAMIC_MINOR;
+	qos->pm_qos_power_miscdev.name = qos->name;
+	qos->pm_qos_power_miscdev.fops = &pm_qos_power_fops;
+
+	return misc_register(&qos->pm_qos_power_miscdev);
+}
+
+static int find_pm_qos_object_by_minor(int minor)
+{
+	int pm_qos_class;
+
+	for (pm_qos_class = 0;
+		pm_qos_class < PM_QOS_NUM_CLASSES; pm_qos_class++) {
+		if (minor ==
+			pm_qos_array[pm_qos_class]->pm_qos_power_miscdev.minor)
+			return pm_qos_class;
+	}
+	return -1;
+}
+
+/**
+ * pm_qos_requirement - returns current system wide qos expectation
+ * @pm_qos_class: identification of which qos value is requested
+ *
+ * This function returns the current target value in an atomic manner.
+ */
+int pm_qos_requirement(int pm_qos_class)
+{
+	return atomic_read(&pm_qos_array[pm_qos_class]->target_value);
+}
+EXPORT_SYMBOL_GPL(pm_qos_requirement);
+
+/**
+ * pm_qos_add_requirement - inserts new qos request into the list
+ * @pm_qos_class: identifies which list of qos request to us
+ * @name: identifies the request
+ * @value: defines the qos request
+ *
+ * This function inserts a new entry in the pm_qos_class list of requested qos
+ * performance characteristics.  It recomputes the aggregate QoS expectations
+ * for the pm_qos_class of parameters.
+ */
+int pm_qos_add_requirement(int pm_qos_class, char *name, s32 value)
+{
+	struct requirement_list *dep;
+	unsigned long flags;
+
+	dep = kzalloc(sizeof(struct requirement_list), GFP_KERNEL);
+	if (dep) {
+		if (value == PM_QOS_DEFAULT_VALUE)
+			dep->value = pm_qos_array[pm_qos_class]->default_value;
+		else
+			dep->value = value;
+		dep->name = kstrdup(name, GFP_KERNEL);
+		if (!dep->name)
+			goto cleanup;
+
+		spin_lock_irqsave(&pm_qos_lock, flags);
+		list_add(&dep->list,
+			&pm_qos_array[pm_qos_class]->requirements.list);
+		spin_unlock_irqrestore(&pm_qos_lock, flags);
+		update_target(pm_qos_class);
+
+		return 0;
+	}
+
+cleanup:
+	kfree(dep);
+	return -ENOMEM;
+}
+EXPORT_SYMBOL_GPL(pm_qos_add_requirement);
+
+/**
+ * pm_qos_update_requirement - modifies an existing qos request
+ * @pm_qos_class: identifies which list of qos request to us
+ * @name: identifies the request
+ * @value: defines the qos request
+ *
+ * Updates an existing qos requirement for the pm_qos_class of parameters along
+ * with updating the target pm_qos_class value.
+ *
+ * If the named request isn't in the list then no change is made.
+ */
+int pm_qos_update_requirement(int pm_qos_class, char *name, s32 new_value)
+{
+	unsigned long flags;
+	struct requirement_list *node;
+	int pending_update = 0;
+
+	spin_lock_irqsave(&pm_qos_lock, flags);
+	list_for_each_entry(node,
+		&pm_qos_array[pm_qos_class]->requirements.list, list) {
+		if (strcmp(node->name, name) == 0) {
+			if (new_value == PM_QOS_DEFAULT_VALUE)
+				node->value =
+				pm_qos_array[pm_qos_class]->default_value;
+			else
+				node->value = new_value;
+			pending_update = 1;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&pm_qos_lock, flags);
+	if (pending_update)
+		update_target(pm_qos_class);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(pm_qos_update_requirement);
+
+/**
+ * pm_qos_remove_requirement - modifies an existing qos request
+ * @pm_qos_class: identifies which list of qos request to us
+ * @name: identifies the request
+ *
+ * Will remove named qos request from pm_qos_class list of parameters and
+ * recompute the current target value for the pm_qos_class.
+ */
+void pm_qos_remove_requirement(int pm_qos_class, char *name)
+{
+	unsigned long flags;
+	struct requirement_list *node;
+	int pending_update = 0;
+
+	spin_lock_irqsave(&pm_qos_lock, flags);
+	list_for_each_entry(node,
+		&pm_qos_array[pm_qos_class]->requirements.list, list) {
+		if (strcmp(node->name, name) == 0) {
+			kfree(node->name);
+			list_del(&node->list);
+			kfree(node);
+			pending_update = 1;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&pm_qos_lock, flags);
+	if (pending_update)
+		update_target(pm_qos_class);
+}
+EXPORT_SYMBOL_GPL(pm_qos_remove_requirement);
+
+/**
+ * pm_qos_add_notifier - sets notification entry for changes to target value
+ * @pm_qos_class: identifies which qos target changes should be notified.
+ * @notifier: notifier block managed by caller.
+ *
+ * will register the notifier into a notification chain that gets called
+ * upon changes to the pm_qos_class target value.
+ */
+int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier)
+{
+	int retval;
+
+	retval = blocking_notifier_chain_register(
+			pm_qos_array[pm_qos_class]->notifiers, notifier);
+
+	return retval;
+}
+EXPORT_SYMBOL_GPL(pm_qos_add_notifier);
+
+/**
+ * pm_qos_remove_notifier - deletes notification entry from chain.
+ * @pm_qos_class: identifies which qos target changes are notified.
+ * @notifier: notifier block to be removed.
+ *
+ * will remove the notifier from the notification chain that gets called
+ * upon changes to the pm_qos_class target value.
+ */
+int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier)
+{
+	int retval;
+
+	retval = blocking_notifier_chain_unregister(
+			pm_qos_array[pm_qos_class]->notifiers, notifier);
+
+	return retval;
+}
+EXPORT_SYMBOL_GPL(pm_qos_remove_notifier);
+
+#define PID_NAME_LEN 32
+
+static int pm_qos_power_open(struct inode *inode, struct file *filp)
+{
+	int ret;
+	long pm_qos_class;
+	char name[PID_NAME_LEN];
+
+	pm_qos_class = find_pm_qos_object_by_minor(iminor(inode));
+	if (pm_qos_class >= 0) {
+		filp->private_data = (void *)pm_qos_class;
+		snprintf(name, PID_NAME_LEN, "process_%d", current->pid);
+		ret = pm_qos_add_requirement(pm_qos_class, name,
+					PM_QOS_DEFAULT_VALUE);
+		if (ret >= 0)
+			return 0;
+	}
+	return -EPERM;
+}
+
+static int pm_qos_power_release(struct inode *inode, struct file *filp)
+{
+	int pm_qos_class;
+	char name[PID_NAME_LEN];
+
+	pm_qos_class = (long)filp->private_data;
+	snprintf(name, PID_NAME_LEN, "process_%d", current->pid);
+	pm_qos_remove_requirement(pm_qos_class, name);
+
+	return 0;
+}
+
+static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
+		size_t count, loff_t *f_pos)
+{
+	s32 value;
+	int pm_qos_class;
+	char name[PID_NAME_LEN];
+
+	pm_qos_class = (long)filp->private_data;
+	if (count != sizeof(s32))
+		return -EINVAL;
+	if (copy_from_user(&value, buf, sizeof(s32)))
+		return -EFAULT;
+	snprintf(name, PID_NAME_LEN, "process_%d", current->pid);
+	pm_qos_update_requirement(pm_qos_class, name, value);
+
+	return  sizeof(s32);
+}
+
+
+/*
+ * This initializes pm-qos for older kernels.
+ */
+int backport_pm_qos_power_init(void)
+{
+	int ret = 0;
+
+	ret = register_pm_qos_misc(&cpu_dma_pm_qos);
+	if (ret < 0) {
+		printk(KERN_ERR "pm_qos_param: cpu_dma_latency setup failed\n");
+		return ret;
+	}
+	ret = register_pm_qos_misc(&network_lat_pm_qos);
+	if (ret < 0) {
+		printk(KERN_ERR "pm_qos_param: network_latency setup failed\n");
+		return ret;
+	}
+	ret = register_pm_qos_misc(&network_throughput_pm_qos);
+	if (ret < 0) {
+		printk(KERN_ERR
+			"pm_qos_param: network_throughput setup failed\n");
+		return ret;
+	}
+	ret = register_pm_qos_misc(&system_bus_freq_pm_qos);
+	if (ret < 0)
+		printk(KERN_ERR
+			"pm_qos_param: system_bus_freq setup failed\n");
+
+	return ret;
+}
+
+int backport_pm_qos_power_deinit(void)
+{
+	int ret = 0;
+
+	ret = misc_deregister(&cpu_dma_pm_qos.pm_qos_power_miscdev);
+	if (ret < 0) {
+		printk(KERN_ERR "pm_qos_param: cpu_dma_latency deinit failed\n");
+		return ret;
+	}
+
+	ret = misc_deregister(&network_lat_pm_qos.pm_qos_power_miscdev);
+	if (ret < 0) {
+		printk(KERN_ERR "pm_qos_param: network_latency deinit failed\n");
+		return ret;
+	}
+
+	ret = misc_deregister(&network_throughput_pm_qos.pm_qos_power_miscdev);
+	if (ret < 0) {
+		printk(KERN_ERR
+			"pm_qos_param: network_throughput deinit failed\n");
+		return ret;
+	}
+
+	ret = misc_deregister(&system_bus_freq_pm_qos.pm_qos_power_miscdev);
+	if (ret < 0) {
+		printk(KERN_ERR
+			"pm_qos_param: system_bus_freq deinit failed\n");
+		return ret;
+	}
+
+	return ret;
+}
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25) */
diff --git a/compat/sch_codel.c b/compat/sch_codel.c
new file mode 100644
index 0000000..5ad66fb
--- /dev/null
+++ b/compat/sch_codel.c
@@ -0,0 +1,306 @@
+/*
+ * Codel - The Controlled-Delay Active Queue Management algorithm
+ *
+ *  Copyright (C) 2011-2012 Kathleen Nichols <nichols@pollere.com>
+ *  Copyright (C) 2011-2012 Van Jacobson <van@pollere.net>
+ *
+ *  Implemented on linux by :
+ *  Copyright (C) 2012 Michael D. Taht <dave.taht@bufferbloat.net>
+ *  Copyright (C) 2012 Eric Dumazet <edumazet@google.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the authors may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this
+ * software may be distributed under the terms of the GNU General
+ * Public License ("GPL") version 2, in which case the provisions of the
+ * GPL apply INSTEAD OF those given above.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+#include <linux/prefetch.h>
+#include <net/pkt_sched.h>
+#include <net/codel.h>
+
+
+#define DEFAULT_CODEL_LIMIT 1000
+
+struct codel_sched_data {
+	struct codel_params	params;
+	struct codel_vars	vars;
+	struct codel_stats	stats;
+	u32			drop_overlimit;
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	u32 limit;
+#endif
+};
+
+/* This is the specific function called from codel_dequeue()
+ * to dequeue a packet from queue. Note: backlog is handled in
+ * codel, we dont need to reduce it here.
+ */
+static struct sk_buff *dequeue(struct codel_vars *vars, struct Qdisc *sch)
+{
+	struct sk_buff *skb = __skb_dequeue(&sch->q);
+
+	prefetch(&skb->end); /* we'll need skb_shinfo() */
+	return skb;
+}
+
+static struct sk_buff *codel_qdisc_dequeue(struct Qdisc *sch)
+{
+	struct codel_sched_data *q = qdisc_priv(sch);
+	struct sk_buff *skb;
+
+	skb = codel_dequeue(sch, &q->params, &q->vars, &q->stats, dequeue);
+
+	/* We cant call qdisc_tree_decrease_qlen() if our qlen is 0,
+	 * or HTB crashes. Defer it for next round.
+	 */
+	if (q->stats.drop_count && sch->q.qlen) {
+		qdisc_tree_decrease_qlen(sch, q->stats.drop_count);
+		q->stats.drop_count = 0;
+	}
+	if (skb)
+		qdisc_bstats_update(sch, skb);
+	return skb;
+}
+
+static int codel_qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+{
+	struct codel_sched_data *q;
+
+	q = qdisc_priv(sch);
+
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	if (likely(qdisc_qlen(sch) < q->limit)) {
+#else
+	if (likely(qdisc_qlen(sch) < sch->limit)) {
+#endif
+		codel_set_enqueue_time(skb);
+		return qdisc_enqueue_tail(skb, sch);
+	}
+	q->drop_overlimit++;
+	return qdisc_drop(skb, sch);
+}
+
+static const struct nla_policy codel_policy[TCA_CODEL_MAX + 1] = {
+	[TCA_CODEL_TARGET]	= { .type = NLA_U32 },
+	[TCA_CODEL_LIMIT]	= { .type = NLA_U32 },
+	[TCA_CODEL_INTERVAL]	= { .type = NLA_U32 },
+	[TCA_CODEL_ECN]		= { .type = NLA_U32 },
+};
+
+static int codel_change(struct Qdisc *sch, struct nlattr *opt)
+{
+	struct codel_sched_data *q = qdisc_priv(sch);
+	struct nlattr *tb[TCA_CODEL_MAX + 1];
+	unsigned int qlen;
+	int err;
+
+	if (!opt)
+		return -EINVAL;
+
+	err = nla_parse_nested(tb, TCA_CODEL_MAX, opt, codel_policy);
+	if (err < 0)
+		return err;
+
+	sch_tree_lock(sch);
+
+	if (tb[TCA_CODEL_TARGET]) {
+		u32 target = nla_get_u32(tb[TCA_CODEL_TARGET]);
+
+		q->params.target = ((u64)target * NSEC_PER_USEC) >> CODEL_SHIFT;
+	}
+
+	if (tb[TCA_CODEL_INTERVAL]) {
+		u32 interval = nla_get_u32(tb[TCA_CODEL_INTERVAL]);
+
+		q->params.interval = ((u64)interval * NSEC_PER_USEC) >> CODEL_SHIFT;
+	}
+
+	if (tb[TCA_CODEL_LIMIT])
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+		q->limit = nla_get_u32(tb[TCA_CODEL_LIMIT]);
+#else
+		sch->limit = nla_get_u32(tb[TCA_CODEL_LIMIT]);
+#endif
+
+	if (tb[TCA_CODEL_ECN])
+		q->params.ecn = !!nla_get_u32(tb[TCA_CODEL_ECN]);
+
+	qlen = sch->q.qlen;
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	while (sch->q.qlen > q->limit) {
+#else
+	while (sch->q.qlen > sch->limit) {
+#endif
+		struct sk_buff *skb = __skb_dequeue(&sch->q);
+
+		sch->qstats.backlog -= qdisc_pkt_len(skb);
+		qdisc_drop(skb, sch);
+	}
+	qdisc_tree_decrease_qlen(sch, qlen - sch->q.qlen);
+
+	sch_tree_unlock(sch);
+	return 0;
+}
+
+static int codel_init(struct Qdisc *sch, struct nlattr *opt)
+{
+	struct codel_sched_data *q = qdisc_priv(sch);
+
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	q->limit = DEFAULT_CODEL_LIMIT;
+#else
+	sch->limit = DEFAULT_CODEL_LIMIT;
+#endif
+
+	codel_params_init(&q->params);
+	codel_vars_init(&q->vars);
+	codel_stats_init(&q->stats);
+
+	if (opt) {
+		int err = codel_change(sch, opt);
+
+		if (err)
+			return err;
+	}
+
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	if (q->limit >= 1)
+#else
+	if (sch->limit >= 1)
+#endif
+		sch->flags |= TCQ_F_CAN_BYPASS;
+	else
+		sch->flags &= ~TCQ_F_CAN_BYPASS;
+
+	return 0;
+}
+
+static int codel_dump(struct Qdisc *sch, struct sk_buff *skb)
+{
+	struct codel_sched_data *q = qdisc_priv(sch);
+	struct nlattr *opts;
+
+	opts = nla_nest_start(skb, TCA_OPTIONS);
+	if (opts == NULL)
+		goto nla_put_failure;
+
+	if (nla_put_u32(skb, TCA_CODEL_TARGET,
+			codel_time_to_us(q->params.target)) ||
+	    nla_put_u32(skb, TCA_CODEL_LIMIT,
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+			q->limit) ||
+#else
+			sch->limit) ||
+#endif
+	    nla_put_u32(skb, TCA_CODEL_INTERVAL,
+			codel_time_to_us(q->params.interval)) ||
+	    nla_put_u32(skb, TCA_CODEL_ECN,
+			q->params.ecn))
+		goto nla_put_failure;
+
+	return nla_nest_end(skb, opts);
+
+nla_put_failure:
+	nla_nest_cancel(skb, opts);
+	return -1;
+}
+
+static int codel_dump_stats(struct Qdisc *sch, struct gnet_dump *d)
+{
+	const struct codel_sched_data *q = qdisc_priv(sch);
+	struct tc_codel_xstats st = {
+		.maxpacket	= q->stats.maxpacket,
+		.count		= q->vars.count,
+		.lastcount	= q->vars.lastcount,
+		.drop_overlimit = q->drop_overlimit,
+		.ldelay		= codel_time_to_us(q->vars.ldelay),
+		.dropping	= q->vars.dropping,
+		.ecn_mark	= q->stats.ecn_mark,
+	};
+
+	if (q->vars.dropping) {
+		codel_tdiff_t delta = q->vars.drop_next - codel_get_time();
+
+		if (delta >= 0)
+			st.drop_next = codel_time_to_us(delta);
+		else
+			st.drop_next = -codel_time_to_us(-delta);
+	}
+
+	return gnet_stats_copy_app(d, &st, sizeof(st));
+}
+
+static void codel_reset(struct Qdisc *sch)
+{
+	struct codel_sched_data *q = qdisc_priv(sch);
+
+	qdisc_reset_queue(sch);
+	codel_vars_init(&q->vars);
+}
+
+static struct Qdisc_ops codel_qdisc_ops __read_mostly = {
+	.id		=	"codel",
+	.priv_size	=	sizeof(struct codel_sched_data),
+
+	.enqueue	=	codel_qdisc_enqueue,
+	.dequeue	=	codel_qdisc_dequeue,
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,28))
+	.peek		=	qdisc_peek_dequeued,
+#endif
+	.init		=	codel_init,
+	.reset		=	codel_reset,
+	.change 	=	codel_change,
+	.dump		=	codel_dump,
+	.dump_stats	=	codel_dump_stats,
+	.owner		=	THIS_MODULE,
+};
+
+static int __init codel_module_init(void)
+{
+	return register_qdisc(&codel_qdisc_ops);
+}
+
+static void __exit codel_module_exit(void)
+{
+	unregister_qdisc(&codel_qdisc_ops);
+}
+
+module_init(codel_module_init)
+module_exit(codel_module_exit)
+
+MODULE_DESCRIPTION("Controlled Delay queue discipline");
+MODULE_AUTHOR("Dave Taht");
+MODULE_AUTHOR("Eric Dumazet");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/compat/sch_fq_codel_core.c b/compat/sch_fq_codel_core.c
new file mode 100644
index 0000000..f03df2a
--- /dev/null
+++ b/compat/sch_fq_codel_core.c
@@ -0,0 +1,659 @@
+/*
+ * Fair Queue CoDel discipline
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ *
+ *  Copyright (C) 2012 Eric Dumazet <edumazet@google.com>
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include <linux/string.h>
+#include <linux/in.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/skbuff.h>
+#include <linux/jhash.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <net/netlink.h>
+#include <net/pkt_sched.h>
+#include <net/flow_keys.h>
+#include <net/codel.h>
+
+/*	Fair Queue CoDel.
+ *
+ * Principles :
+ * Packets are classified (internal classifier or external) on flows.
+ * This is a Stochastic model (as we use a hash, several flows
+ *			       might be hashed on same slot)
+ * Each flow has a CoDel managed queue.
+ * Flows are linked onto two (Round Robin) lists,
+ * so that new flows have priority on old ones.
+ *
+ * For a given flow, packets are not reordered (CoDel uses a FIFO)
+ * head drops only.
+ * ECN capability is on by default.
+ * Low memory footprint (64 bytes per flow)
+ */
+
+struct fq_codel_flow {
+	struct sk_buff	  *head;
+	struct sk_buff	  *tail;
+	struct list_head  flowchain;
+	int		  deficit;
+	u32		  dropped; /* number of drops (or ECN marks) on this flow */
+	struct codel_vars cvars;
+}; /* please try to keep this structure <= 64 bytes */
+
+struct fq_codel_sched_data {
+	struct tcf_proto *filter_list;	/* optional external classifier */
+	struct fq_codel_flow *flows;	/* Flows table [flows_cnt] */
+	u32		*backlogs;	/* backlog table [flows_cnt] */
+	u32		flows_cnt;	/* number of flows */
+	u32		perturbation;	/* hash perturbation */
+	u32		quantum;	/* psched_mtu(qdisc_dev(sch)); */
+	struct codel_params cparams;
+	struct codel_stats cstats;
+	u32		drop_overlimit;
+	u32		new_flow_count;
+
+	struct list_head new_flows;	/* list of new flows */
+	struct list_head old_flows;	/* list of old flows */
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	u32 limit;
+#endif
+};
+
+static unsigned int fq_codel_hash(const struct fq_codel_sched_data *q,
+				  const struct sk_buff *skb)
+{
+	struct flow_keys keys;
+	unsigned int hash;
+
+	skb_flow_dissect(skb, &keys);
+	hash = jhash_3words((__force u32)keys.dst,
+			    (__force u32)keys.src ^ keys.ip_proto,
+			    (__force u32)keys.ports, q->perturbation);
+	return ((u64)hash * q->flows_cnt) >> 32;
+}
+
+static unsigned int fq_codel_classify(struct sk_buff *skb, struct Qdisc *sch,
+				      int *qerr)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	struct tcf_result res;
+	int result;
+
+	if (TC_H_MAJ(skb->priority) == sch->handle &&
+	    TC_H_MIN(skb->priority) > 0 &&
+	    TC_H_MIN(skb->priority) <= q->flows_cnt)
+		return TC_H_MIN(skb->priority);
+
+	if (!q->filter_list)
+		return fq_codel_hash(q, skb) + 1;
+
+	*qerr = NET_XMIT_SUCCESS | __NET_XMIT_BYPASS;
+	result = tc_classify(skb, q->filter_list, &res);
+	if (result >= 0) {
+#ifdef CONFIG_NET_CLS_ACT
+		switch (result) {
+		case TC_ACT_STOLEN:
+		case TC_ACT_QUEUED:
+			*qerr = NET_XMIT_SUCCESS | __NET_XMIT_STOLEN;
+		case TC_ACT_SHOT:
+			return 0;
+		}
+#endif
+		if (TC_H_MIN(res.classid) <= q->flows_cnt)
+			return TC_H_MIN(res.classid);
+	}
+	return 0;
+}
+
+/* helper functions : might be changed when/if skb use a standard list_head */
+
+/* remove one skb from head of slot queue */
+static inline struct sk_buff *dequeue_head(struct fq_codel_flow *flow)
+{
+	struct sk_buff *skb = flow->head;
+
+	flow->head = skb->next;
+	skb->next = NULL;
+	return skb;
+}
+
+/* add skb to flow queue (tail add) */
+static inline void flow_queue_add(struct fq_codel_flow *flow,
+				  struct sk_buff *skb)
+{
+	if (flow->head == NULL)
+		flow->head = skb;
+	else
+		flow->tail->next = skb;
+	flow->tail = skb;
+	skb->next = NULL;
+}
+
+static unsigned int fq_codel_drop(struct Qdisc *sch)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	struct sk_buff *skb;
+	unsigned int maxbacklog = 0, idx = 0, i, len;
+	struct fq_codel_flow *flow;
+
+	/* Queue is full! Find the fat flow and drop packet from it.
+	 * This might sound expensive, but with 1024 flows, we scan
+	 * 4KB of memory, and we dont need to handle a complex tree
+	 * in fast path (packet queue/enqueue) with many cache misses.
+	 */
+	for (i = 0; i < q->flows_cnt; i++) {
+		if (q->backlogs[i] > maxbacklog) {
+			maxbacklog = q->backlogs[i];
+			idx = i;
+		}
+	}
+	flow = &q->flows[idx];
+	skb = dequeue_head(flow);
+	len = qdisc_pkt_len(skb);
+	q->backlogs[idx] -= len;
+	kfree_skb(skb);
+	sch->q.qlen--;
+	sch->qstats.drops++;
+	sch->qstats.backlog -= len;
+	flow->dropped++;
+	return idx;
+}
+
+static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	unsigned int idx;
+	struct fq_codel_flow *flow;
+	int uninitialized_var(ret);
+
+	idx = fq_codel_classify(skb, sch, &ret);
+	if (idx == 0) {
+		if (ret & __NET_XMIT_BYPASS)
+			sch->qstats.drops++;
+		kfree_skb(skb);
+		return ret;
+	}
+	idx--;
+
+	codel_set_enqueue_time(skb);
+	flow = &q->flows[idx];
+	flow_queue_add(flow, skb);
+	q->backlogs[idx] += qdisc_pkt_len(skb);
+	sch->qstats.backlog += qdisc_pkt_len(skb);
+
+	if (list_empty(&flow->flowchain)) {
+		list_add_tail(&flow->flowchain, &q->new_flows);
+		codel_vars_init(&flow->cvars);
+		q->new_flow_count++;
+		flow->deficit = q->quantum;
+		flow->dropped = 0;
+	}
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	if (++sch->q.qlen < q->limit)
+#else
+	if (++sch->q.qlen < sch->limit)
+#endif
+		return NET_XMIT_SUCCESS;
+
+	q->drop_overlimit++;
+	/* Return Congestion Notification only if we dropped a packet
+	 * from this flow.
+	 */
+	if (fq_codel_drop(sch) == idx)
+		return NET_XMIT_CN;
+
+	/* As we dropped a packet, better let upper stack know this */
+	qdisc_tree_decrease_qlen(sch, 1);
+	return NET_XMIT_SUCCESS;
+}
+
+/* This is the specific function called from codel_dequeue()
+ * to dequeue a packet from queue. Note: backlog is handled in
+ * codel, we dont need to reduce it here.
+ */
+static struct sk_buff *dequeue(struct codel_vars *vars, struct Qdisc *sch)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	struct fq_codel_flow *flow;
+	struct sk_buff *skb = NULL;
+
+	flow = container_of(vars, struct fq_codel_flow, cvars);
+	if (flow->head) {
+		skb = dequeue_head(flow);
+		q->backlogs[flow - q->flows] -= qdisc_pkt_len(skb);
+		sch->q.qlen--;
+	}
+	return skb;
+}
+
+static struct sk_buff *fq_codel_dequeue(struct Qdisc *sch)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	struct sk_buff *skb;
+	struct fq_codel_flow *flow;
+	struct list_head *head;
+	u32 prev_drop_count, prev_ecn_mark;
+
+begin:
+	head = &q->new_flows;
+	if (list_empty(head)) {
+		head = &q->old_flows;
+		if (list_empty(head))
+			return NULL;
+	}
+	flow = list_first_entry(head, struct fq_codel_flow, flowchain);
+
+	if (flow->deficit <= 0) {
+		flow->deficit += q->quantum;
+		list_move_tail(&flow->flowchain, &q->old_flows);
+		goto begin;
+	}
+
+	prev_drop_count = q->cstats.drop_count;
+	prev_ecn_mark = q->cstats.ecn_mark;
+
+	skb = codel_dequeue(sch, &q->cparams, &flow->cvars, &q->cstats,
+			    dequeue);
+
+	flow->dropped += q->cstats.drop_count - prev_drop_count;
+	flow->dropped += q->cstats.ecn_mark - prev_ecn_mark;
+
+	if (!skb) {
+		/* force a pass through old_flows to prevent starvation */
+		if ((head == &q->new_flows) && !list_empty(&q->old_flows))
+			list_move_tail(&flow->flowchain, &q->old_flows);
+		else
+			list_del_init(&flow->flowchain);
+		goto begin;
+	}
+	qdisc_bstats_update(sch, skb);
+	flow->deficit -= qdisc_pkt_len(skb);
+	/* We cant call qdisc_tree_decrease_qlen() if our qlen is 0,
+	 * or HTB crashes. Defer it for next round.
+	 */
+	if (q->cstats.drop_count && sch->q.qlen) {
+		qdisc_tree_decrease_qlen(sch, q->cstats.drop_count);
+		q->cstats.drop_count = 0;
+	}
+	return skb;
+}
+
+static void fq_codel_reset(struct Qdisc *sch)
+{
+	struct sk_buff *skb;
+
+	while ((skb = fq_codel_dequeue(sch)) != NULL)
+		kfree_skb(skb);
+}
+
+static const struct nla_policy fq_codel_policy[TCA_FQ_CODEL_MAX + 1] = {
+	[TCA_FQ_CODEL_TARGET]	= { .type = NLA_U32 },
+	[TCA_FQ_CODEL_LIMIT]	= { .type = NLA_U32 },
+	[TCA_FQ_CODEL_INTERVAL]	= { .type = NLA_U32 },
+	[TCA_FQ_CODEL_ECN]	= { .type = NLA_U32 },
+	[TCA_FQ_CODEL_FLOWS]	= { .type = NLA_U32 },
+	[TCA_FQ_CODEL_QUANTUM]	= { .type = NLA_U32 },
+};
+
+static int fq_codel_change(struct Qdisc *sch, struct nlattr *opt)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	struct nlattr *tb[TCA_FQ_CODEL_MAX + 1];
+	int err;
+
+	if (!opt)
+		return -EINVAL;
+
+	err = nla_parse_nested(tb, TCA_FQ_CODEL_MAX, opt, fq_codel_policy);
+	if (err < 0)
+		return err;
+	if (tb[TCA_FQ_CODEL_FLOWS]) {
+		if (q->flows)
+			return -EINVAL;
+		q->flows_cnt = nla_get_u32(tb[TCA_FQ_CODEL_FLOWS]);
+		if (!q->flows_cnt ||
+		    q->flows_cnt > 65536)
+			return -EINVAL;
+	}
+	sch_tree_lock(sch);
+
+	if (tb[TCA_FQ_CODEL_TARGET]) {
+		u64 target = nla_get_u32(tb[TCA_FQ_CODEL_TARGET]);
+
+		q->cparams.target = (target * NSEC_PER_USEC) >> CODEL_SHIFT;
+	}
+
+	if (tb[TCA_FQ_CODEL_INTERVAL]) {
+		u64 interval = nla_get_u32(tb[TCA_FQ_CODEL_INTERVAL]);
+
+		q->cparams.interval = (interval * NSEC_PER_USEC) >> CODEL_SHIFT;
+	}
+
+	if (tb[TCA_FQ_CODEL_LIMIT])
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+		q->limit = nla_get_u32(tb[TCA_FQ_CODEL_LIMIT]);
+#else
+		sch->limit = nla_get_u32(tb[TCA_FQ_CODEL_LIMIT]);
+#endif
+
+	if (tb[TCA_FQ_CODEL_ECN])
+		q->cparams.ecn = !!nla_get_u32(tb[TCA_FQ_CODEL_ECN]);
+
+	if (tb[TCA_FQ_CODEL_QUANTUM])
+		q->quantum = max(256U, nla_get_u32(tb[TCA_FQ_CODEL_QUANTUM]));
+
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	while (sch->q.qlen > q->limit) {
+#else
+	while (sch->q.qlen > sch->limit) {
+#endif
+		struct sk_buff *skb = fq_codel_dequeue(sch);
+
+		kfree_skb(skb);
+		q->cstats.drop_count++;
+	}
+	qdisc_tree_decrease_qlen(sch, q->cstats.drop_count);
+	q->cstats.drop_count = 0;
+
+	sch_tree_unlock(sch);
+	return 0;
+}
+
+static void *fq_codel_zalloc(size_t sz)
+{
+	void *ptr = kzalloc(sz, GFP_KERNEL | __GFP_NOWARN);
+
+	if (!ptr)
+		ptr = vzalloc(sz);
+	return ptr;
+}
+
+static void fq_codel_free(void *addr)
+{
+	if (addr) {
+		if (is_vmalloc_addr(addr))
+			vfree(addr);
+		else
+			kfree(addr);
+	}
+}
+
+static void fq_codel_destroy(struct Qdisc *sch)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,25))
+	tcf_destroy_chain(&q->filter_list);
+#else
+	tcf_destroy_chain(q->filter_list);
+#endif
+	fq_codel_free(q->backlogs);
+	fq_codel_free(q->flows);
+}
+
+static int fq_codel_init(struct Qdisc *sch, struct nlattr *opt)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	int i;
+
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	q->limit = 10*1024;
+#else
+	sch->limit = 10*1024;
+#endif
+	q->flows_cnt = 1024;
+	q->quantum = psched_mtu(qdisc_dev(sch));
+	q->perturbation = net_random();
+	INIT_LIST_HEAD(&q->new_flows);
+	INIT_LIST_HEAD(&q->old_flows);
+	codel_params_init(&q->cparams);
+	codel_stats_init(&q->cstats);
+	q->cparams.ecn = true;
+
+	if (opt) {
+		int err = fq_codel_change(sch, opt);
+		if (err)
+			return err;
+	}
+
+	if (!q->flows) {
+		q->flows = fq_codel_zalloc(q->flows_cnt *
+					   sizeof(struct fq_codel_flow));
+		if (!q->flows)
+			return -ENOMEM;
+		q->backlogs = fq_codel_zalloc(q->flows_cnt * sizeof(u32));
+		if (!q->backlogs) {
+			fq_codel_free(q->flows);
+			return -ENOMEM;
+		}
+		for (i = 0; i < q->flows_cnt; i++) {
+			struct fq_codel_flow *flow = q->flows + i;
+
+			INIT_LIST_HEAD(&flow->flowchain);
+		}
+	}
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+	if (q->limit >= 1)
+#else
+	if (sch->limit >= 1)
+#endif
+		sch->flags |= TCQ_F_CAN_BYPASS;
+	else
+		sch->flags &= ~TCQ_F_CAN_BYPASS;
+	return 0;
+}
+
+static int fq_codel_dump(struct Qdisc *sch, struct sk_buff *skb)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	struct nlattr *opts;
+
+	opts = nla_nest_start(skb, TCA_OPTIONS);
+	if (opts == NULL)
+		goto nla_put_failure;
+
+	if (nla_put_u32(skb, TCA_FQ_CODEL_TARGET,
+			codel_time_to_us(q->cparams.target)) ||
+	    nla_put_u32(skb, TCA_FQ_CODEL_LIMIT,
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,39))
+			q->limit) ||
+#else
+			sch->limit) ||
+#endif
+	    nla_put_u32(skb, TCA_FQ_CODEL_INTERVAL,
+			codel_time_to_us(q->cparams.interval)) ||
+	    nla_put_u32(skb, TCA_FQ_CODEL_ECN,
+			q->cparams.ecn) ||
+	    nla_put_u32(skb, TCA_FQ_CODEL_QUANTUM,
+			q->quantum) ||
+	    nla_put_u32(skb, TCA_FQ_CODEL_FLOWS,
+			q->flows_cnt))
+		goto nla_put_failure;
+
+	nla_nest_end(skb, opts);
+	return skb->len;
+
+nla_put_failure:
+	return -1;
+}
+
+static int fq_codel_dump_stats(struct Qdisc *sch, struct gnet_dump *d)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	struct tc_fq_codel_xstats st = {
+		.type				= TCA_FQ_CODEL_XSTATS_QDISC,
+	};
+	struct list_head *pos;
+
+	st.qdisc_stats.maxpacket = q->cstats.maxpacket;
+	st.qdisc_stats.drop_overlimit = q->drop_overlimit;
+	st.qdisc_stats.ecn_mark = q->cstats.ecn_mark;
+	st.qdisc_stats.new_flow_count = q->new_flow_count;
+
+	list_for_each(pos, &q->new_flows)
+		st.qdisc_stats.new_flows_len++;
+
+	list_for_each(pos, &q->old_flows)
+		st.qdisc_stats.old_flows_len++;
+
+	return gnet_stats_copy_app(d, &st, sizeof(st));
+}
+
+static struct Qdisc *fq_codel_leaf(struct Qdisc *sch, unsigned long arg)
+{
+	return NULL;
+}
+
+static unsigned long fq_codel_get(struct Qdisc *sch, u32 classid)
+{
+	return 0;
+}
+
+static unsigned long fq_codel_bind(struct Qdisc *sch, unsigned long parent,
+			      u32 classid)
+{
+	/* we cannot bypass queue discipline anymore */
+	sch->flags &= ~TCQ_F_CAN_BYPASS;
+	return 0;
+}
+
+static void fq_codel_put(struct Qdisc *q, unsigned long cl)
+{
+}
+
+static struct tcf_proto **fq_codel_find_tcf(struct Qdisc *sch, unsigned long cl)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+
+	if (cl)
+		return NULL;
+	return &q->filter_list;
+}
+
+static int fq_codel_dump_class(struct Qdisc *sch, unsigned long cl,
+			  struct sk_buff *skb, struct tcmsg *tcm)
+{
+	tcm->tcm_handle |= TC_H_MIN(cl);
+	return 0;
+}
+
+static int fq_codel_dump_class_stats(struct Qdisc *sch, unsigned long cl,
+				     struct gnet_dump *d)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	u32 idx = cl - 1;
+	struct gnet_stats_queue qs = { 0 };
+	struct tc_fq_codel_xstats xstats;
+
+	if (idx < q->flows_cnt) {
+		const struct fq_codel_flow *flow = &q->flows[idx];
+		const struct sk_buff *skb = flow->head;
+
+		memset(&xstats, 0, sizeof(xstats));
+		xstats.type = TCA_FQ_CODEL_XSTATS_CLASS;
+		xstats.class_stats.deficit = flow->deficit;
+		xstats.class_stats.ldelay =
+			codel_time_to_us(flow->cvars.ldelay);
+		xstats.class_stats.count = flow->cvars.count;
+		xstats.class_stats.lastcount = flow->cvars.lastcount;
+		xstats.class_stats.dropping = flow->cvars.dropping;
+		if (flow->cvars.dropping) {
+			codel_tdiff_t delta = flow->cvars.drop_next -
+					      codel_get_time();
+
+			xstats.class_stats.drop_next = (delta >= 0) ?
+				codel_time_to_us(delta) :
+				-codel_time_to_us(-delta);
+		}
+		while (skb) {
+			qs.qlen++;
+			skb = skb->next;
+		}
+		qs.backlog = q->backlogs[idx];
+		qs.drops = flow->dropped;
+	}
+	if (gnet_stats_copy_queue(d, &qs) < 0)
+		return -1;
+	if (idx < q->flows_cnt)
+		return gnet_stats_copy_app(d, &xstats, sizeof(xstats));
+	return 0;
+}
+
+static void fq_codel_walk(struct Qdisc *sch, struct qdisc_walker *arg)
+{
+	struct fq_codel_sched_data *q = qdisc_priv(sch);
+	unsigned int i;
+
+	if (arg->stop)
+		return;
+
+	for (i = 0; i < q->flows_cnt; i++) {
+		if (list_empty(&q->flows[i].flowchain) ||
+		    arg->count < arg->skip) {
+			arg->count++;
+			continue;
+		}
+		if (arg->fn(sch, i + 1, arg) < 0) {
+			arg->stop = 1;
+			break;
+		}
+		arg->count++;
+	}
+}
+
+static const struct Qdisc_class_ops fq_codel_class_ops = {
+	.leaf		=	fq_codel_leaf,
+	.get		=	fq_codel_get,
+	.put		=	fq_codel_put,
+	.tcf_chain	=	fq_codel_find_tcf,
+	.bind_tcf	=	fq_codel_bind,
+	.unbind_tcf	=	fq_codel_put,
+	.dump		=	fq_codel_dump_class,
+	.dump_stats	=	fq_codel_dump_class_stats,
+	.walk		=	fq_codel_walk,
+};
+
+static struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = {
+	.cl_ops		=	&fq_codel_class_ops,
+	.id		=	"fq_codel",
+	.priv_size	=	sizeof(struct fq_codel_sched_data),
+	.enqueue	=	fq_codel_enqueue,
+	.dequeue	=	fq_codel_dequeue,
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,28))
+	.peek		=	qdisc_peek_dequeued,
+#endif
+	.drop		=	fq_codel_drop,
+	.init		=	fq_codel_init,
+	.reset		=	fq_codel_reset,
+	.destroy	=	fq_codel_destroy,
+	.change		=	fq_codel_change,
+	.dump		=	fq_codel_dump,
+	.dump_stats =	fq_codel_dump_stats,
+	.owner		=	THIS_MODULE,
+};
+
+static int __init fq_codel_module_init(void)
+{
+	return register_qdisc(&fq_codel_qdisc_ops);
+}
+
+static void __exit fq_codel_module_exit(void)
+{
+	unregister_qdisc(&fq_codel_qdisc_ops);
+}
+
+module_init(fq_codel_module_init)
+module_exit(fq_codel_module_exit)
+MODULE_AUTHOR("Eric Dumazet");
+MODULE_LICENSE("GPL");
diff --git a/compat/user_namespace.c b/compat/user_namespace.c
new file mode 100644
index 0000000..288efc0
--- /dev/null
+++ b/compat/user_namespace.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2012  Luis R. Rodriguez <mcgrof@do-not-panic.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels backporting
+ * user_namespace.c
+ */
+
+#include <linux/module.h>
+#include <linux/highuid.h>
+#include <linux/uidgid.h>
+#include <linux/user_namespace.h>
+
+#ifdef CONFIG_USER_NS
+
+kuid_t make_kuid(struct user_namespace *ns, uid_t uid)
+{
+	/* Map the uid to a global kernel uid */
+	return KUIDT_INIT(uid);
+}
+EXPORT_SYMBOL_GPL(make_kuid);
+
+uid_t from_kuid(struct user_namespace *targ, kuid_t kuid)
+{
+	/* Map the uid from a global kernel uid */
+	return __kuid_val(kuid);
+}
+EXPORT_SYMBOL_GPL(from_kuid);
+
+uid_t from_kuid_munged(struct user_namespace *targ, kuid_t kuid)
+{
+	uid_t uid;
+	uid = from_kuid(targ, kuid);
+
+	if (uid == (uid_t) -1)
+		uid = overflowuid;
+	return uid;
+}
+EXPORT_SYMBOL_GPL(from_kuid_munged);
+
+kgid_t make_kgid(struct user_namespace *ns, gid_t gid)
+{
+	/* Map the gid to a global kernel gid */
+	return KGIDT_INIT(gid);
+}
+EXPORT_SYMBOL_GPL(make_kgid);
+
+gid_t from_kgid(struct user_namespace *targ, kgid_t kgid)
+{
+	/* Map the gid from a global kernel gid */
+	return __kgid_val(kgid);
+}
+EXPORT_SYMBOL_GPL(from_kgid);
+
+gid_t from_kgid_munged(struct user_namespace *targ, kgid_t kgid)
+{
+	gid_t gid;
+	gid = from_kgid(targ, kgid);
+
+	if (gid == (gid_t) -1)
+		gid = overflowgid;
+	return gid;
+}
+EXPORT_SYMBOL_GPL(from_kgid_munged);
+
+#endif /* CONFIG_USER_NS */