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-rw-r--r--target/linux/generic-2.6/patches/000-reenable_devfs.patch219
1 files changed, 219 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches/000-reenable_devfs.patch b/target/linux/generic-2.6/patches/000-reenable_devfs.patch
new file mode 100644
index 0000000000..ce98def5da
--- /dev/null
+++ b/target/linux/generic-2.6/patches/000-reenable_devfs.patch
@@ -0,0 +1,219 @@
+diff -ur linux-2.6.15-rc5/drivers/mtd/mtd_blkdevs.c linux-2.6.15-rc5-openwrt/drivers/mtd/mtd_blkdevs.c
+--- linux-2.6.15-rc5/drivers/mtd/mtd_blkdevs.c 2005-12-04 06:10:42.000000000 +0100
++++ linux-2.6.15-rc5-openwrt/drivers/mtd/mtd_blkdevs.c 2005-12-15 07:53:20.000000000 +0100
+@@ -21,6 +21,9 @@
+ #include <linux/init.h>
+ #include <asm/semaphore.h>
+ #include <asm/uaccess.h>
++#ifdef CONFIG_DEVFS_FS
++#include <linux/devfs_fs_kernel.h>
++#endif
+
+ static LIST_HEAD(blktrans_majors);
+
+@@ -302,6 +305,11 @@
+ snprintf(gd->disk_name, sizeof(gd->disk_name),
+ "%s%d", tr->name, new->devnum);
+
++#ifdef CONFIG_DEVFS_FS
++ snprintf(gd->devfs_name, sizeof(gd->devfs_name),
++ "%s/%c", tr->name, (tr->part_bits?'a':'0') + new->devnum);
++#endif
++
+ /* 2.5 has capacity in units of 512 bytes while still
+ having BLOCK_SIZE_BITS set to 10. Just to keep us amused. */
+ set_capacity(gd, (new->size * new->blksize) >> 9);
+@@ -418,6 +426,10 @@
+ return ret;
+ }
+
++#ifdef CONFIG_DEVFS_FS
++ devfs_mk_dir(tr->name);
++#endif
++
+ INIT_LIST_HEAD(&tr->devs);
+ list_add(&tr->list, &blktrans_majors);
+
+@@ -450,6 +462,10 @@
+ tr->remove_dev(dev);
+ }
+
++#ifdef CONFIG_DEVFS_FS
++ devfs_remove(tr->name);
++#endif
++
+ blk_cleanup_queue(tr->blkcore_priv->rq);
+ unregister_blkdev(tr->major, tr->name);
+
+diff -ur linux-2.6.15-rc5/drivers/mtd/mtdchar.c linux-2.6.15-rc5-openwrt/drivers/mtd/mtdchar.c
+--- linux-2.6.15-rc5/drivers/mtd/mtdchar.c 2005-12-04 06:10:42.000000000 +0100
++++ linux-2.6.15-rc5-openwrt/drivers/mtd/mtdchar.c 2005-12-15 07:49:15.000000000 +0100
+@@ -6,7 +6,6 @@
+ */
+
+ #include <linux/config.h>
+-#include <linux/device.h>
+ #include <linux/fs.h>
+ #include <linux/init.h>
+ #include <linux/kernel.h>
+@@ -19,19 +18,33 @@
+
+ #include <asm/uaccess.h>
+
++#ifdef CONFIG_DEVFS_FS
++#include <linux/devfs_fs_kernel.h>
++#else
++#include <linux/device.h>
++
+ static struct class *mtd_class;
++#endif
+
+ static void mtd_notify_add(struct mtd_info* mtd)
+ {
+ if (!mtd)
+ return;
+
++#ifdef CONFIG_DEVFS_FS
++ devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
++ S_IFCHR | S_IRUGO | S_IWUGO, "mtd/%d", mtd->index);
++
++ devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
++ S_IFCHR | S_IRUGO, "mtd/%dro", mtd->index);
++#else
+ class_device_create(mtd_class, NULL, MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
+ NULL, "mtd%d", mtd->index);
+
+ class_device_create(mtd_class, NULL,
+ MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
+ NULL, "mtd%dro", mtd->index);
++#endif
+ }
+
+ static void mtd_notify_remove(struct mtd_info* mtd)
+@@ -39,8 +52,13 @@
+ if (!mtd)
+ return;
+
++#ifdef CONFIG_DEVFS_FS
++ devfs_remove("mtd/%d", mtd->index);
++ devfs_remove("mtd/%dro", mtd->index);
++#else
+ class_device_destroy(mtd_class, MKDEV(MTD_CHAR_MAJOR, mtd->index*2));
+ class_device_destroy(mtd_class, MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1));
++#endif
+ }
+
+ static struct mtd_notifier notifier = {
+@@ -48,6 +66,22 @@
+ .remove = mtd_notify_remove,
+ };
+
++#ifdef CONFIG_DEVFS_FS
++ static inline void mtdchar_devfs_init(void)
++ {
++ devfs_mk_dir("mtd");
++ register_mtd_user(&notifier);
++ }
++ static inline void mtdchar_devfs_exit(void)
++ {
++ unregister_mtd_user(&notifier);
++ devfs_remove("mtd");
++ }
++ #else /* !DEVFS */
++ #define mtdchar_devfs_init() do { } while(0)
++ #define mtdchar_devfs_exit() do { } while(0)
++#endif
++
+ /*
+ * We use file->private_data to store a pointer to the MTDdevice.
+ * Since alighment is at least 32 bits, we have 2 bits free for OTP
+@@ -643,6 +677,9 @@
+ return -EAGAIN;
+ }
+
++#ifdef CONFIG_DEVFS_FS
++ mtdchar_devfs_init();
++#else
+ mtd_class = class_create(THIS_MODULE, "mtd");
+
+ if (IS_ERR(mtd_class)) {
+@@ -652,13 +689,19 @@
+ }
+
+ register_mtd_user(&notifier);
++#endif
+ return 0;
+ }
+
+ static void __exit cleanup_mtdchar(void)
+ {
++
++#ifdef CONFIG_DEVFS_FS
++ mtdchar_devfs_exit();
++#else
+ unregister_mtd_user(&notifier);
+ class_destroy(mtd_class);
++#endif
+ unregister_chrdev(MTD_CHAR_MAJOR, "mtd");
+ }
+
+diff -ur linux-2.6.15-rc5/fs/Kconfig linux-2.6.15-rc5-openwrt/fs/Kconfig
+--- linux-2.6.15-rc5/fs/Kconfig 2005-12-04 06:10:42.000000000 +0100
++++ linux-2.6.15-rc5-openwrt/fs/Kconfig 2005-12-15 07:44:01.000000000 +0100
+@@ -772,6 +772,56 @@
+ help
+ Exports the dump image of crashed kernel in ELF format.
+
++config DEVFS_FS
++ bool "/dev file system support (OBSOLETE)"
++ depends on EXPERIMENTAL
++ help
++ This is support for devfs, a virtual file system (like /proc) which
++ provides the file system interface to device drivers, normally found
++ in /dev. Devfs does not depend on major and minor number
++ allocations. Device drivers register entries in /dev which then
++ appear automatically, which means that the system administrator does
++ not have to create character and block special device files in the
++ /dev directory using the mknod command (or MAKEDEV script) anymore.
++
++ This is work in progress. If you want to use this, you *must* read
++ the material in <file:Documentation/filesystems/devfs/>, especially
++ the file README there.
++
++ Note that devfs no longer manages /dev/pts! If you are using UNIX98
++ ptys, you will also need to mount the /dev/pts filesystem (devpts).
++
++ Note that devfs has been obsoleted by udev,
++ <http://www.kernel.org/pub/linux/utils/kernel/hotplug/>.
++ It has been stripped down to a bare minimum and is only provided for
++ legacy installations that use its naming scheme which is
++ unfortunately different from the names normal Linux installations
++ use.
++
++ If unsure, say N.
++
++config DEVFS_MOUNT
++ bool "Automatically mount at boot"
++ depends on DEVFS_FS
++ help
++ This option appears if you have CONFIG_DEVFS_FS enabled. Setting
++ this to 'Y' will make the kernel automatically mount devfs onto /dev
++ when the system is booted, before the init thread is started.
++ You can override this with the "devfs=nomount" boot option.
++
++ If unsure, say N.
++
++config DEVFS_DEBUG
++ bool "Debug devfs"
++ depends on DEVFS_FS
++ help
++ If you say Y here, then the /dev file system code will generate
++ debugging messages. See the file
++ <file:Documentation/filesystems/devfs/boot-options> for more
++ details.
++
++ If unsure, say N.
++
+ config SYSFS
+ bool "sysfs file system support" if EMBEDDED
+ default y