This series of patches closes the support gap on one of the explicitly supported platforms (WRT54G3G) by adding direct support for the Sierra Wireless 3G modems. Signed-off-by: RB <aoz.syn@gmail.com>

SVN-Revision: 11898

2 files changed, 1508 insertions, 0 deletions

diff --git a/target/linux/brcm-2.4/patches/014-sierra_support.patch b/target/linux/brcm-2.4/patches/014-sierra_support.patch
new file mode 100644
index 0000000000..93ed7af771
--- /dev/null
+++ b/target/linux/brcm-2.4/patches/014-sierra_support.patch
@@ -0,0 +1,1486 @@
+diff -Naur linux-2.4.35.4-old/drivers/usb/serial/sierra.c linux-2.4.35.4/drivers/usb/serial/sierra.c
+--- linux-2.4.35.4-old/drivers/usb/serial/sierra.c	1969-12-31 17:00:00.000000000 -0700
++++ linux-2.4.35.4/drivers/usb/serial/sierra.c	2008-01-25 10:21:25.747868456 -0700
+@@ -0,0 +1,1446 @@
++/*
++ * Sierra Wireless CDMA Wireless Serial USB drive
++ * 
++ * Current Copy modified by: Kevin Lloyd <linux@sierrawireless.com>
++ * Original Copy written by: 2005 Greg Kroah-Hartman <gregkh <at> suse.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.
++ *
++ * Version history:
++  Version 1.03 (Lloyd):
++  Included support for DTR control and enhanced buffering (should help
++  speed).
++ */
++
++#include <linux/config.h>
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/slab.h>
++#include <linux/tty.h>
++#include <linux/tty_driver.h>
++#include <linux/tty_flip.h>
++#include <linux/module.h>
++#include <linux/usb.h>
++#include <linux/mm.h>
++#include <asm/uaccess.h>
++#include <linux/errno.h>
++#include <linux/list.h>
++#include <linux/spinlock.h>
++#include <linux/smp_lock.h>
++
++#ifdef CONFIG_USB_SERIAL_DEBUG
++	static int debug = 1;
++#else
++	static int debug;
++#endif
++
++#include "usb-serial.h"
++#include "sierra.h"
++#if defined(CONFIG_USB_SERIAL_PL2303) || defined(CONFIG_USB_SERIAL_PL2303_MODULE)
++#include "pl2303.h"  // see /* BEGIN HORRIBLE HACK FOR PL2303 */ below
++#endif
++
++#define DRIVER_VERSION "v1.03"
++
++#if 0
++#define USB_VENDER_REQUEST_SET_DEVICE_POWER_STATE 0
++
++#define USB_DEVICE_POWER_STATE_D0	0x0000
++#define USB_DEVICE_POWER_STATE_D1	0x0001
++#define USB_DEVICE_POWER_STATE_D2	0x0002
++#define USB_DEVICE_POWER_STATE_D3	0x0003
++
++#define SET_CONTROL_LINE_STATE		0x22
++/*
++ * Output control lines.
++ */
++
++#define ACM_CTRL_DTR		0x01
++#define ACM_CTRL_RTS		0x02
++#endif
++
++//static int sw_attach(struct usb_serial *serial);
++static void sw_usb_serial_generic_shutdown(struct usb_serial *serial);
++
++static int  sw_usb_serial_generic_open(struct usb_serial_port *port, struct file *filp);
++static void sw_usb_serial_generic_close(struct usb_serial_port *port, struct file *filp);
++
++#if 1
++/*-----------------------------------------------------------*/
++static int                      serial_refcount;
++static struct tty_driver        serial_tty_driver;
++static struct tty_struct *      serial_tty[SERIAL_TTY_MINORS];
++static struct termios *         serial_termios[SERIAL_TTY_MINORS];
++static struct termios *         serial_termios_locked[SERIAL_TTY_MINORS];
++static struct usb_serial        *serial_table[SERIAL_TTY_MINORS];       /* initially all NULL */
++
++static LIST_HEAD(usb_serial_driver_list);
++static struct usb_serial *get_free_serial (int num_ports, int *minor);
++static void generic_write_bulk_callback (struct urb *urb);
++static void * usb_serial_probe(struct usb_device *dev, unsigned int ifnum,const struct usb_device_id *id);
++static void usb_serial_disconnect(struct usb_device *dev, void *ptr);
++static void sw_usb_serial_generic_read_bulk_callback (struct urb *urb);
++static void port_softint(void *private);
++static void return_serial (struct usb_serial *serial);
++static struct usb_serial *get_free_serial (int num_ports, int *minor);
++static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data);
++/*-----------------------------------------------------------*/
++
++#endif
++
++
++static struct usb_device_id id_table [] = {
++	{ USB_DEVICE(0x1199, 0x0017) },	/* Sierra Wireless EM5625 */
++	{ USB_DEVICE(0x1199, 0x0018) },	/* Sierra Wireless MC5720 */
++	{ USB_DEVICE(0x1199, 0x0218) },	/* Sierra Wireless MC5720 */
++	{ USB_DEVICE(0x0f30, 0x1b1d) },	/* Sierra Wireless MC5720 */
++	{ USB_DEVICE(0x1199, 0x0020) },	/* Sierra Wireless MC5725 */
++	{ USB_DEVICE(0x1199, 0x0220) },	/* Sierra Wireless MC5725 */
++	{ USB_DEVICE(0x1199, 0x0019) },	/* Sierra Wireless AirCard 595 */
++	{ USB_DEVICE(0x1199, 0x0021) },	/* Sierra Wireless AirCard 597E */
++	{ USB_DEVICE(0x1199, 0x0120) },	/* Sierra Wireless USB Dongle 595U */
++	{ USB_DEVICE(0x1199, 0x0023) },	/* Sierra Wireless C597 */
++
++	{ USB_DEVICE(0x1199, 0x6802) },	/* Sierra Wireless MC8755 */
++	{ USB_DEVICE(0x1199, 0x6804) },	/* Sierra Wireless MC8755 */
++	{ USB_DEVICE(0x1199, 0x6803) },	/* Sierra Wireless MC8765 */
++	{ USB_DEVICE(0x1199, 0x6812) },	/* Sierra Wireless MC8775 & AC 875U */
++	{ USB_DEVICE(0x1199, 0x6813) },	/* Sierra Wireless MC8775 (Thinkpad internal) */
++	{ USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
++	{ USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
++	{ USB_DEVICE(0x1199, 0x6820) },	/* Sierra Wireless AirCard 875 */
++	{ USB_DEVICE(0x1199, 0x6821) },	/* Sierra Wireless AirCard 875U */
++	{ USB_DEVICE(0x1199, 0x6832) },	/* Sierra Wireless MC8780*/
++	{ USB_DEVICE(0x1199, 0x6833) },	/* Sierra Wireless MC8781*/
++	{ USB_DEVICE(0x1199, 0x683B) },	/* Sierra Wireless MC8785 Composite*/
++	{ USB_DEVICE(0x1199, 0x6850) },	/* Sierra Wireless AirCard 880 */
++	{ USB_DEVICE(0x1199, 0x6851) },	/* Sierra Wireless AirCard 881 */
++	{ USB_DEVICE(0x1199, 0x6852) },	/* Sierra Wireless AirCard 880 E */
++	{ USB_DEVICE(0x1199, 0x6853) },	/* Sierra Wireless AirCard 881 E */
++	{ USB_DEVICE(0x1199, 0x6855) },	/* Sierra Wireless AirCard 880 U */
++	{ USB_DEVICE(0x1199, 0x6856) },	/* Sierra Wireless AirCard 881 U */
++	{ USB_DEVICE(0x1199, 0x6859) },	/* Sierra Wireless AirCard 885 E */
++	{ USB_DEVICE(0x1199, 0x685A) },	/* Sierra Wireless AirCard 885 E */
++
++	{ USB_DEVICE(0x1199, 0x6468) }, /* Sierra Wireless MP3G - EVDO */
++	{ USB_DEVICE(0x1199, 0x6469) }, /* Sierra Wireless MP3G - UMTS/HSPA */
++
++	{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
++	{ USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra Wireless PC 5220 */
++	{ USB_DEVICE(0x05C6, 0x6613) }, /* Onda H600/ZTE MF330 */
++	{ }
++};
++
++MODULE_DEVICE_TABLE(usb, id_table);
++
++static struct usb_driver sierra_driver = {
++//	.owner =	THIS_MODULE,
++	.name =		"Sierra wireless",
++	.probe =	usb_serial_probe,
++	.disconnect =	usb_serial_disconnect,
++	.id_table =	id_table,
++};
++
++static struct usb_serial_device_type sierra_device = {
++//	.driver = {
++	.owner =		THIS_MODULE,
++	.name =			"Sierra Wireless",
++//	},
++	.id_table =		id_table,
++	.num_interrupt_in =	NUM_DONT_CARE,
++	.num_bulk_in =		NUM_DONT_CARE,
++	.num_bulk_out =		NUM_DONT_CARE,
++	.num_ports =		3,
++	//.startup =		sw_attach,
++	.shutdown =		sw_usb_serial_generic_shutdown,
++	.open = 		sw_usb_serial_generic_open,
++	.close = 		sw_usb_serial_generic_close,
++};
++
++#define MAX_NUM_PORTS 8
++
++/* local function prototypes */
++static int  serial_open (struct tty_struct *tty, struct file * filp);
++static void serial_close (struct tty_struct *tty, struct file * filp);
++static int  serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count);
++static int  serial_write_room (struct tty_struct *tty);
++static int  serial_chars_in_buffer (struct tty_struct *tty);
++static void serial_throttle (struct tty_struct * tty);
++static void serial_unthrottle (struct tty_struct * tty);
++static int  serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg);
++static void serial_set_termios (struct tty_struct *tty, struct termios * old);
++//static void serial_shutdown (struct usb_serial *serial);
++static void serial_break (struct tty_struct *tty, int break_state);
++static int generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
++static int generic_write_room (struct usb_serial_port *port);
++static void generic_cleanup (struct usb_serial_port *port);
++static int generic_chars_in_buffer (struct usb_serial_port *port);
++//static void generic_shutdown (struct usb_serial *serial);
++
++#if 1
++static struct tty_driver serial_tty_driver = {
++        .magic =                TTY_DRIVER_MAGIC,
++        .driver_name =          "usb-serial",
++#ifndef CONFIG_DEVFS_FS
++        .name =                 "ttyUSB",
++#else
++        .name =                 "usb/tts/%d",
++#endif
++        .major =                SERIAL_TTY_MAJOR,
++        .minor_start =          0,
++        .num =                  SERIAL_TTY_MINORS,
++        .type =                 TTY_DRIVER_TYPE_SERIAL,
++        .subtype =              SERIAL_TYPE_NORMAL,
++        .flags =                TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS,
++
++        .refcount =             &serial_refcount,
++        .table =                serial_tty,
++        .termios =              serial_termios,
++        .termios_locked =       serial_termios_locked,
++
++        .open =                 serial_open,
++        .close =                serial_close,
++        .write =                serial_write,
++        .write_room =           serial_write_room,
++        .ioctl =                serial_ioctl,
++        .set_termios =          serial_set_termios,
++        .throttle =             serial_throttle,
++        .unthrottle =           serial_unthrottle,
++        .break_ctl =            serial_break,
++        .chars_in_buffer =      serial_chars_in_buffer,
++        .read_proc =            serial_read_proc,
++};
++#endif
++
++
++/*****************************************************************************
++ * Driver tty interface functions
++ *****************************************************************************/
++static struct usb_serial *get_serial_by_minor (unsigned int minor)
++{
++        return serial_table[minor];
++}
++
++static int serial_open (struct tty_struct *tty, struct file * filp)
++{
++	struct usb_serial *serial;
++	struct usb_serial_port *port;
++	unsigned int portNumber;
++	int retval = 0;
++	
++	dbg("%s", __FUNCTION__);
++
++	/* initialize the pointer incase something fails */
++	tty->driver_data = NULL;
++
++	/* get the serial object associated with this tty pointer */
++	serial = get_serial_by_minor (MINOR(tty->device));
++
++	if (serial_paranoia_check (serial, __FUNCTION__))
++		return -ENODEV;
++
++	/* set up our port structure making the tty driver remember our port object, and us it */
++	portNumber = MINOR(tty->device) - serial->minor;
++	port = &serial->port[portNumber];
++	tty->driver_data = port;
++
++	down (&port->sem);
++	port->tty = tty;
++	 
++	/* lock this module before we call it */
++	if (serial->type->owner)
++		__MOD_INC_USE_COUNT(serial->type->owner);
++
++	++port->open_count;
++	if (port->open_count == 1) {
++		/* only call the device specific open if this 
++		 * is the first time the port is opened */
++		if (serial->type->open)
++			retval = serial->type->open(port, filp);
++		else
++			retval = sw_usb_serial_generic_open(port, filp);//@.@
++	}
++
++	if (retval) {
++		port->open_count = 0;
++		if (serial->type->owner)
++			__MOD_DEC_USE_COUNT(serial->type->owner);
++	}
++
++	up (&port->sem);
++	return retval;
++}
++
++static void __serial_close(struct usb_serial_port *port, struct file *filp)
++{
++	if (!port->open_count) {
++		dbg ("%s - port not opened", __FUNCTION__);
++		return;
++	}
++
++	--port->open_count;
++	if (port->open_count <= 0) {
++		/* only call the device specific close if this 
++		 * port is being closed by the last owner */
++		if (port->serial->type->close)
++			port->serial->type->close(port, filp);
++		else
++			//generic_close(port, filp);
++			sw_usb_serial_generic_close(port, filp);
++		port->open_count = 0;
++	}
++
++	if (port->serial->type->owner)
++		__MOD_DEC_USE_COUNT(port->serial->type->owner);
++}
++
++static void serial_close(struct tty_struct *tty, struct file * filp)
++{
++	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
++	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++
++	if (!serial)
++		return;
++
++	down (&port->sem);
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	/* if disconnect beat us to the punch here, there's nothing to do */
++	if (tty->driver_data) {
++		__serial_close(port, filp);
++	}
++
++	up (&port->sem);
++}
++
++static int serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count)
++{
++	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
++	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++	int retval = -EINVAL;
++
++	if (!serial)
++		return -ENODEV;
++
++	down (&port->sem);
++
++	dbg("%s - port %d, %d byte(s)", __FUNCTION__, port->number, count);
++
++	if (!port->open_count) {
++		dbg("%s - port not opened", __FUNCTION__);
++		goto exit;
++	}
++
++	/* pass on to the driver specific version of this function if it is available */
++	if (serial->type->write)
++		retval = serial->type->write(port, from_user, buf, count);
++	else
++		retval = generic_write(port, from_user, buf, count);
++
++exit:
++	up (&port->sem);
++	return retval;
++}
++
++static int serial_write_room (struct tty_struct *tty) 
++{
++	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
++	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++	int retval = -EINVAL;
++
++	if (!serial)
++		return -ENODEV;
++
++	down (&port->sem);
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	if (!port->open_count) {
++		dbg("%s - port not open", __FUNCTION__);
++		goto exit;
++	}
++
++	/* pass on to the driver specific version of this function if it is available */
++	if (serial->type->write_room)
++		retval = serial->type->write_room(port);
++	else
++		retval = generic_write_room(port);
++
++exit:
++	up (&port->sem);
++	return retval;
++}
++
++static int serial_chars_in_buffer (struct tty_struct *tty) 
++{
++	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
++	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++	int retval = -EINVAL;
++
++	if (!serial)
++		return -ENODEV;
++
++	down (&port->sem);
++
++	dbg("%s = port %d", __FUNCTION__, port->number);
++
++	if (!port->open_count) {
++		dbg("%s - port not open", __FUNCTION__);
++		goto exit;
++	}
++
++	/* pass on to the driver specific version of this function if it is available */
++	if (serial->type->chars_in_buffer)
++		retval = serial->type->chars_in_buffer(port);
++	else
++		retval = generic_chars_in_buffer(port);
++
++exit:
++	up (&port->sem);
++	return retval;
++}
++
++static void serial_throttle (struct tty_struct * tty)
++{
++	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
++	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++
++	if (!serial)
++		return;
++
++	down (&port->sem);
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	if (!port->open_count) {
++		dbg ("%s - port not open", __FUNCTION__);
++		goto exit;
++	}
++
++	/* pass on to the driver specific version of this function */
++	if (serial->type->throttle)
++		serial->type->throttle(port);
++
++exit:
++	up (&port->sem);
++}
++
++static void serial_unthrottle (struct tty_struct * tty)
++{
++	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
++	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++
++	if (!serial)
++		return;
++
++	down (&port->sem);
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	if (!port->open_count) {
++		dbg("%s - port not open", __FUNCTION__);
++		goto exit;
++	}
++
++	/* pass on to the driver specific version of this function */
++	if (serial->type->unthrottle)
++		serial->type->unthrottle(port);
++
++exit:
++	up (&port->sem);
++}
++
++static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
++{
++	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
++	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++	int retval = -ENODEV;
++
++	if (!serial)
++		return -ENODEV;
++
++	down (&port->sem);
++
++	dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
++
++	if (!port->open_count) {
++		dbg ("%s - port not open", __FUNCTION__);
++		goto exit;
++	}
++
++	/* pass on to the driver specific version of this function if it is available */
++	if (serial->type->ioctl)
++		retval = serial->type->ioctl(port, file, cmd, arg);
++	else
++		retval = -ENOIOCTLCMD;
++
++exit:
++	up (&port->sem);
++	return retval;
++}
++
++static void serial_set_termios (struct tty_struct *tty, struct termios * old)
++{
++	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
++	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++
++	if (!serial)
++		return;
++
++	down (&port->sem);
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	if (!port->open_count) {
++		dbg("%s - port not open", __FUNCTION__);
++		goto exit;
++	}
++
++	/* pass on to the driver specific version of this function if it is available */
++	if (serial->type->set_termios)
++		serial->type->set_termios(port, old);
++
++exit:
++	up (&port->sem);
++}
++
++static void serial_break (struct tty_struct *tty, int break_state)
++{
++	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;
++	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++
++	if (!serial)
++		return;
++
++	down (&port->sem);
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	if (!port->open_count) {
++		dbg("%s - port not open", __FUNCTION__);
++		goto exit;
++	}
++
++	/* pass on to the driver specific version of this function if it is available */
++	if (serial->type->break_ctl)
++		serial->type->break_ctl(port, break_state);
++
++exit:
++	up (&port->sem);
++}
++#if 0
++static void serial_shutdown (struct usb_serial *serial)
++{
++	dbg ("%s", __FUNCTION__);
++
++	if (serial->type->shutdown)
++		serial->type->shutdown(serial);
++	else
++		generic_shutdown(serial);
++}
++#endif
++static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data)
++{
++	struct usb_serial *serial;
++	int length = 0;
++	int i;
++	off_t begin = 0;
++	char tmp[40];
++
++	dbg("%s", __FUNCTION__);
++	length += sprintf (page, "usbserinfo:1.0 driver:%s\n", DRIVER_VERSION);
++	for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) {
++		serial = get_serial_by_minor(i);
++		if (serial == NULL)
++			continue;
++
++		length += sprintf (page+length, "%d:", i);
++		if (serial->type->owner)
++			length += sprintf (page+length, " module:%s", serial->type->owner->name);
++		length += sprintf (page+length, " name:\"%s\"", serial->type->name);
++		length += sprintf (page+length, " vendor:%04x product:%04x", serial->vendor, serial->product);
++		length += sprintf (page+length, " num_ports:%d", serial->num_ports);
++		length += sprintf (page+length, " port:%d", i - serial->minor + 1);
++
++		usb_make_path(serial->dev, tmp, sizeof(tmp));
++		length += sprintf (page+length, " path:%s", tmp);
++			
++		length += sprintf (page+length, "\n");
++		if ((length + begin) > (off + count))
++			goto done;
++		if ((length + begin) < off) {
++			begin += length;
++			length = 0;
++		}
++	}
++	*eof = 1;
++done:
++	if (off >= (length + begin))
++		return 0;
++	*start = page + (off-begin);
++	return ((count < begin+length-off) ? count : begin+length-off);
++}
++
++
++/*-----------------------------------------------------------*/
++static int generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count)
++{
++        struct usb_serial *serial = port->serial;
++        int result;
++
++        dbg("%s - port %d", __FUNCTION__, port->number);
++
++        if (count == 0) {
++                dbg("%s - write request of 0 bytes", __FUNCTION__);
++                return (0);
++        }
++
++        /* only do something if we have a bulk out endpoint */
++        if (serial->num_bulk_out) {
++                if (port->write_urb->status == -EINPROGRESS) {
++                        dbg("%s - already writing", __FUNCTION__);
++                        return (0);
++                }
++
++                count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
++
++                if (from_user) {
++                        if (copy_from_user(port->write_urb->transfer_buffer, buf, count))
++                                return -EFAULT;
++                }
++                else {
++                        memcpy (port->write_urb->transfer_buffer, buf, count);
++                }
++
++                usb_serial_debug_data (__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer);
++
++                /* set up our urb */
++                usb_fill_bulk_urb (port->write_urb, serial->dev,
++                                   usb_sndbulkpipe (serial->dev,
++                                                    port->bulk_out_endpointAddress),
++                                   port->write_urb->transfer_buffer, count,
++                                   ((serial->type->write_bulk_callback) ?
++                                     serial->type->write_bulk_callback :
++                                     generic_write_bulk_callback), port);
++
++                /* send the data out the bulk port */
++                result = usb_submit_urb(port->write_urb);
++                if (result)
++                        err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
++                else
++                        result = count;
++
++                return result;
++        }
++
++        /* no bulk out, so return 0 bytes written */
++        return (0);
++}
++
++static int generic_write_room (struct usb_serial_port *port)
++{
++        struct usb_serial *serial = port->serial;
++        int room = 0;
++
++        dbg("%s - port %d", __FUNCTION__, port->number);
++
++        if (serial->num_bulk_out) {
++                if (port->write_urb->status != -EINPROGRESS)
++                        room = port->bulk_out_size;
++        }
++
++        dbg("%s - returns %d", __FUNCTION__, room);
++        return (room);
++}
++
++static int generic_chars_in_buffer (struct usb_serial_port *port)
++{
++        struct usb_serial *serial = port->serial;
++        int chars = 0;
++
++        dbg("%s - port %d", __FUNCTION__, port->number);
++
++        if (serial->num_bulk_out) {
++                if (port->write_urb->status == -EINPROGRESS)
++                        chars = port->write_urb->transfer_buffer_length;
++        }
++
++        dbg("%s - returns %d", __FUNCTION__, chars);
++        return (chars);
++}
++#if 0
++static void generic_shutdown (struct usb_serial *serial)
++{
++        int i;
++
++        dbg("%s", __FUNCTION__);
++
++        /* stop reads and writes on all ports */
++        for (i=0; i < serial->num_ports; ++i) {
++                generic_cleanup (&serial->port[i]);
++        }
++}
++static void generic_cleanup (struct usb_serial_port *port)
++{
++        struct usb_serial *serial = port->serial;
++
++        dbg("%s - port %d", __FUNCTION__, port->number);
++
++        if (serial->dev) {
++                /* shutdown any bulk reads that might be going on */
++                if (serial->num_bulk_out)
++                        usb_unlink_urb (port->write_urb);
++                if (serial->num_bulk_in)
++                        usb_unlink_urb (port->read_urb);
++        }
++}
++#endif
++/*----------------------------------------------------------*/
++static void generic_write_bulk_callback (struct urb *urb)
++{
++        struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
++        struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++
++        dbg("%s - port %d", __FUNCTION__, port->number);
++
++        if (!serial) {
++                dbg("%s - bad serial pointer, exiting", __FUNCTION__);
++                return;
++        }
++
++        if (urb->status) {
++                dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
++                return;
++        }
++
++        queue_task(&port->tqueue, &tq_immediate);
++        mark_bh(IMMEDIATE_BH);
++
++        return;
++}
++
++static struct usb_serial *get_free_serial (int num_ports, int *minor)
++{
++        struct usb_serial *serial = NULL;
++        int i, j;
++        int good_spot;
++
++        dbg("%s %d", __FUNCTION__, num_ports);
++
++        *minor = 0;
++        for (i = 0; i < SERIAL_TTY_MINORS; ++i) {
++                if (serial_table[i])
++                        continue;
++
++                good_spot = 1;
++                for (j = 1; j <= num_ports-1; ++j)
++                        if (serial_table[i+j])
++                                good_spot = 0;
++                if (good_spot == 0)
++                        continue;
++
++                if (!(serial = kmalloc(sizeof(struct usb_serial), GFP_KERNEL))) {
++                        err("%s - Out of memory", __FUNCTION__);
++                        return NULL;
++                }
++                memset(serial, 0, sizeof(struct usb_serial));
++                serial->magic = USB_SERIAL_MAGIC;
++                serial_table[i] = serial;
++                *minor = i;
++                dbg("%s - minor base = %d", __FUNCTION__, *minor);
++                for (i = *minor+1; (i < (*minor + num_ports)) && (i < SERIAL_TTY_MINORS); ++i)
++                        serial_table[i] = serial;
++                return serial;
++        }
++        return NULL;
++}
++
++static void return_serial (struct usb_serial *serial)
++{
++        int i;
++
++        dbg("%s", __FUNCTION__);
++
++        if (serial == NULL)
++                return;
++
++        for (i = 0; i < serial->num_ports; ++i) {
++                serial_table[serial->minor + i] = NULL;
++        }
++
++        return;
++}
++
++static void port_softint(void *private)
++{
++        struct usb_serial_port *port = (struct usb_serial_port *)private;
++        struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
++        struct tty_struct *tty;
++
++        dbg("%s - port %d", __FUNCTION__, port->number);
++
++        if (!serial)
++                return;
++
++        tty = port->tty;
++        if (!tty)
++                return;
++
++        if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) {
++                dbg("%s - write wakeup call.", __FUNCTION__);
++                (tty->ldisc.write_wakeup)(tty);
++        }
++
++        wake_up_interruptible(&tty->write_wait);
++}
++
++
++static void * usb_serial_probe(struct usb_device *dev, unsigned int ifnum,
++                               const struct usb_device_id *id)
++{
++        struct usb_serial *serial = NULL;
++        struct usb_serial_port *port;
++        struct usb_interface *interface;
++        struct usb_interface_descriptor *iface_desc;
++        struct usb_endpoint_descriptor *endpoint;
++        struct usb_endpoint_descriptor *interrupt_in_endpoint[MAX_NUM_PORTS];
++        struct usb_endpoint_descriptor *bulk_in_endpoint[MAX_NUM_PORTS];
++        struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS];
++        struct usb_serial_device_type *type = NULL;
++        struct list_head *tmp;
++        int found;
++        int minor;
++        int buffer_size;
++        int i;
++        int num_interrupt_in = 0;
++        int num_bulk_in = 0;
++        int num_bulk_out = 0;
++        int num_ports;
++        int max_endpoints;
++        const struct usb_device_id *id_pattern = NULL;
++
++        /* loop through our list of known serial converters, and see if this
++           device matches. */
++        found = 0;
++        interface = &dev->actconfig->interface[ifnum];
++        list_for_each (tmp, &usb_serial_driver_list) {
++                type = list_entry(tmp, struct usb_serial_device_type, driver_list);
++                id_pattern = usb_match_id(dev, interface, type->id_table);
++                if (id_pattern != NULL) {
++                        dbg("descriptor matches");
++                        found = 1;
++                        break;
++                }
++        }
++        if (!found) {
++                /* no match */
++                dbg("none matched");
++                return(NULL);
++        }
++        /* descriptor matches, let's find the endpoints needed */
++        /* check out the endpoints */
++        iface_desc = &interface->altsetting[0];
++        for (i = 0; i < iface_desc->bNumEndpoints; ++i) {
++                endpoint = &iface_desc->endpoint[i];
++
++                if ((endpoint->bEndpointAddress & 0x80) &&
++                    ((endpoint->bmAttributes & 3) == 0x02)) {
++                        /* we found a bulk in endpoint */
++                        dbg("found bulk in");
++                        bulk_in_endpoint[num_bulk_in] = endpoint;
++                        ++num_bulk_in;
++                }
++
++                if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
++                    ((endpoint->bmAttributes & 3) == 0x02)) {
++                        /* we found a bulk out endpoint */
++                        dbg("found bulk out");
++                        bulk_out_endpoint[num_bulk_out] = endpoint;
++                        ++num_bulk_out;
++                }
++
++                if ((endpoint->bEndpointAddress & 0x80) &&
++                    ((endpoint->bmAttributes & 3) == 0x03)) {
++                        /* we found a interrupt in endpoint */
++                        dbg("found interrupt in");
++                        interrupt_in_endpoint[num_interrupt_in] = endpoint;
++                        ++num_interrupt_in;
++                }
++        }
++
++#if defined(CONFIG_USB_SERIAL_PL2303) || defined(CONFIG_USB_SERIAL_PL2303_MODULE)
++        /* BEGIN HORRIBLE HACK FOR PL2303 */
++        /* this is needed due to the looney way its endpoints are set up */
++        if (((dev->descriptor.idVendor == PL2303_VENDOR_ID) &&
++             (dev->descriptor.idProduct == PL2303_PRODUCT_ID)) ||
++            ((dev->descriptor.idVendor == ATEN_VENDOR_ID) &&
++             (dev->descriptor.idProduct == ATEN_PRODUCT_ID))) {
++                if (ifnum == 1) {
++                        /* check out the endpoints of the other interface*/
++                        interface = &dev->actconfig->interface[ifnum ^ 1];
++                        iface_desc = &interface->altsetting[0];
++                        for (i = 0; i < iface_desc->bNumEndpoints; ++i) {
++                                endpoint = &iface_desc->endpoint[i];
++                                if ((endpoint->bEndpointAddress & 0x80) &&
++                                    ((endpoint->bmAttributes & 3) == 0x03)) {
++                                        /* we found a interrupt in endpoint */
++                                        dbg("found interrupt in for Prolific device on separate interface");
++                                        interrupt_in_endpoint[num_interrupt_in] = endpoint;
++                                        ++num_interrupt_in;
++                                }
++                        }
++                }
++
++                /* Now make sure the PL-2303 is configured correctly.
++                 * If not, give up now and hope this hack will work
++                 * properly during a later invocation of usb_serial_probe
++                 */
++                if (num_bulk_in == 0 || num_bulk_out == 0) {
++                        info("PL-2303 hack: descriptors matched but endpoints did not");
++                        return NULL;
++                }
++        }
++        /* END HORRIBLE HACK FOR PL2303 */
++#endif
++
++        /* found all that we need */
++        info("%s converter detected", type->name);
++
++#ifdef CONFIG_USB_SERIAL_SIERRAWIRELESS
++        if (type == &sierra_driver) {
++                num_ports = num_bulk_out;
++                if (num_ports == 0) {
++                        err("Sierra 3G device with no bulk out, not allowed.");
++                        return NULL;
++                }
++        } else
++#endif
++                num_ports = type->num_ports;
++
++        serial = get_free_serial (num_ports, &minor);
++        if (serial == NULL) {
++                err("No more free serial devices");
++                return NULL;
++        }
++
++        serial->dev = dev;
++        serial->type = type;
++        serial->interface = interface;
++        serial->minor = minor;
++        serial->num_ports = num_ports;
++        serial->num_bulk_in = num_bulk_in;
++        serial->num_bulk_out = num_bulk_out;
++        serial->num_interrupt_in = num_interrupt_in;
++        serial->vendor = dev->descriptor.idVendor;
++        serial->product = dev->descriptor.idProduct;
++
++        /* set up the endpoint information */
++        for (i = 0; i < num_bulk_in; ++i) {
++                endpoint = bulk_in_endpoint[i];
++                port = &serial->port[i];
++                port->read_urb = usb_alloc_urb (0);
++                if (!port->read_urb) {
++                        err("No free urbs available");
++                        goto probe_error;
++                }
++//Amin marked           buffer_size = endpoint->wMaxPacketSize;
++// ===> 20060310 Amin modify for improve EVDO and HSDPA Card
++                buffer_size = 2048;
++                printk("KERNEL DEBUG => USBSERIAL.O buffer_size = 2048\n");
++// <=== 20060310 Amin modify for improve EVDO and HSDPA Card
++                port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
++                port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
++                if (!port->bulk_in_buffer) {
++                        err("Couldn't allocate bulk_in_buffer");
++                        goto probe_error;
++                }
++                usb_fill_bulk_urb (port->read_urb, dev,
++                                   usb_rcvbulkpipe (dev,
++                                                    endpoint->bEndpointAddress),
++                                   port->bulk_in_buffer, buffer_size,
++                                   ((serial->type->read_bulk_callback) ?
++                                     serial->type->read_bulk_callback :
++                                     sw_usb_serial_generic_read_bulk_callback),
++                                   port);
++        }
++
++        for (i = 0; i < num_bulk_out; ++i) {
++                endpoint = bulk_out_endpoint[i];
++                port = &serial->port[i];
++                port->write_urb = usb_alloc_urb(0);
++                if (!port->write_urb) {
++                        err("No free urbs available");
++                        goto probe_error;
++                }
++                buffer_size = endpoint->wMaxPacketSize;
++                port->bulk_out_size = buffer_size;
++                port->bulk_out_endpointAddress = endpoint->bEndpointAddress;
++                port->bulk_out_buffer = kmalloc (buffer_size, GFP_KERNEL);
++                if (!port->bulk_out_buffer) {
++                        err("Couldn't allocate bulk_out_buffer");
++                        goto probe_error;
++                }
++                usb_fill_bulk_urb (port->write_urb, dev,
++                                   usb_sndbulkpipe (dev,
++                                                    endpoint->bEndpointAddress),
++                                   port->bulk_out_buffer, buffer_size,
++                                   ((serial->type->write_bulk_callback) ?
++                                     serial->type->write_bulk_callback :
++                                     generic_write_bulk_callback),
++                                   port);
++        }
++
++        for (i = 0; i < num_interrupt_in; ++i) {
++                endpoint = interrupt_in_endpoint[i];
++                port = &serial->port[i];
++                port->interrupt_in_urb = usb_alloc_urb(0);
++                if (!port->interrupt_in_urb) {
++                        err("No free urbs available");
++                        goto probe_error;
++                }
++                buffer_size = endpoint->wMaxPacketSize;
++                port->interrupt_in_endpointAddress = endpoint->bEndpointAddress;
++                port->interrupt_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
++                if (!port->interrupt_in_buffer) {
++                        err("Couldn't allocate interrupt_in_buffer");
++                        goto probe_error;
++                }
++                usb_fill_int_urb (port->interrupt_in_urb, dev,
++                                  usb_rcvintpipe (dev,
++                                                  endpoint->bEndpointAddress),
++                                  port->interrupt_in_buffer, buffer_size,
++                                  serial->type->read_int_callback, port,
++                                  endpoint->bInterval);
++        }
++
++        /* initialize some parts of the port structures */
++        /* we don't use num_ports here cauz some devices have more endpoint pairs than ports */
++        max_endpoints = max(num_bulk_in, num_bulk_out);
++        max_endpoints = max(max_endpoints, num_interrupt_in);
++        max_endpoints = max(max_endpoints, (int)serial->num_ports);
++        dbg("%s - setting up %d port structures for this device", __FUNCTION__, max_endpoints);
++        for (i = 0; i < max_endpoints; ++i) {
++                port = &serial->port[i];
++                port->number = i + serial->minor;
++                port->serial = serial;
++                port->magic = USB_SERIAL_PORT_MAGIC;
++                port->tqueue.routine = port_softint;
++                port->tqueue.data = port;
++                init_MUTEX (&port->sem);
++        }
++
++        /* if this device type has a startup function, call it */
++        if (type->startup) {
++                i = type->startup (serial);
++                if (i < 0)
++                        goto probe_error;
++                if (i > 0)
++                        return serial;
++        }
++
++        /* initialize the devfs nodes for this device and let the user know what ports we are bound to */
++        for (i = 0; i < serial->num_ports; ++i) {
++                tty_register_devfs (&serial_tty_driver, 0, serial->port[i].number);
++                info("%s converter now attached to ttyUSB%d (or usb/tts/%d for devfs)",
++                     type->name, serial->port[i].number, serial->port[i].number);
++        }
++
++        return serial; /* success */
++
++
++probe_error:
++        for (i = 0; i < num_bulk_in; ++i) {
++                port = &serial->port[i];
++                if (port->read_urb)
++                        usb_free_urb (port->read_urb);
++                if (port->bulk_in_buffer)
++                        kfree (port->bulk_in_buffer);
++        }
++        for (i = 0; i < num_bulk_out; ++i) {
++                port = &serial->port[i];
++                if (port->write_urb)
++                        usb_free_urb (port->write_urb);
++                if (port->bulk_out_buffer)
++                        kfree (port->bulk_out_buffer);
++        }
++        for (i = 0; i < num_interrupt_in; ++i) {
++                port = &serial->port[i];
++                if (port->interrupt_in_urb)
++                        usb_free_urb (port->interrupt_in_urb);
++                if (port->interrupt_in_buffer)
++                        kfree (port->interrupt_in_buffer);
++        }
++
++        /* return the minor range that this device had */
++        return_serial (serial);
++
++        /* free up any memory that we allocated */
++        kfree (serial);
++        return NULL;
++}
++
++static void usb_serial_disconnect(struct usb_device *dev, void *ptr)
++{
++        struct usb_serial *serial = (struct usb_serial *) ptr;
++        struct usb_serial_port *port;
++        int i;
++
++        dbg ("%s", __FUNCTION__);
++        if (serial) {
++                /* fail all future close/read/write/ioctl/etc calls */
++                for (i = 0; i < serial->num_ports; ++i) {
++                        port = &serial->port[i];
++                        down (&port->sem);
++                        if (port->tty != NULL) {
++                                while (port->open_count > 0) {
++                                        //__serial_close(port, NULL);
++					sw_usb_serial_generic_close(port,NULL);
++                                }
++                                port->tty->driver_data = NULL;
++                        }
++                        up (&port->sem);
++                }
++
++                serial->dev = NULL;
++                //serial_shutdown (serial);
++		sw_usb_serial_generic_shutdown(serial);
++
++                for (i = 0; i < serial->num_ports; ++i)
++                        serial->port[i].open_count = 0;
++
++                for (i = 0; i < serial->num_bulk_in; ++i) {
++                        port = &serial->port[i];
++                        if (port->read_urb) {
++                                usb_unlink_urb (port->read_urb);
++                                usb_free_urb (port->read_urb);
++                        }
++                        if (port->bulk_in_buffer)
++                                kfree (port->bulk_in_buffer);
++                }
++                for (i = 0; i < serial->num_bulk_out; ++i) {
++                        port = &serial->port[i];
++                        if (port->write_urb) {
++                                usb_unlink_urb (port->write_urb);
++                                usb_free_urb (port->write_urb);
++                        }
++                        if (port->bulk_out_buffer)
++                                kfree (port->bulk_out_buffer);
++                }
++                for (i = 0; i < serial->num_interrupt_in; ++i) {
++                        port = &serial->port[i];
++                        if (port->interrupt_in_urb) {
++                                usb_unlink_urb (port->interrupt_in_urb);
++                                usb_free_urb (port->interrupt_in_urb);
++                        }
++                        if (port->interrupt_in_buffer)
++                                kfree (port->interrupt_in_buffer);
++                }
++
++                for (i = 0; i < serial->num_ports; ++i) {
++                        tty_unregister_devfs (&serial_tty_driver, serial->port[i].number);
++                        info("%s converter now disconnected from ttyUSB%d", serial->type->name, serial->port[i].number);
++                }
++
++                /* return the minor range that this device had */
++                return_serial (serial);
++
++                /* free up any memory that we allocated */
++                kfree (serial);
++
++        } else {
++                info("device disconnected");
++        }
++
++}
++
++#if 0
++static int sw_attach(struct usb_serial *serial)
++{
++	struct usb_device *hdev = serial->dev;
++	int rc;
++
++	dbg("%s - serial(0x%p)", __FUNCTION__, serial);
++	
++	rc = usb_control_msg(
++		hdev, 
++		usb_sndctrlpipe(hdev, 0),
++		USB_VENDER_REQUEST_SET_DEVICE_POWER_STATE,	/* bRequest */ 
++		USB_TYPE_VENDOR|USB_RECIP_DEVICE, 		/* bmRequestType */
++		USB_DEVICE_POWER_STATE_D0, 			/* wValue */
++		0,						/* wIndex */
++		NULL, 						/* Data */
++		0, 						/* wLength */
++		1000);						/* Timeout */
++
++	err("%s - rc(%d)", __FUNCTION__, rc);
++	return rc;
++}
++#endif
++//void sw_usb_serial_generic_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
++static void sw_usb_serial_generic_read_bulk_callback (struct urb *urb)
++{
++	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
++	struct usb_serial *serial = port->serial;
++	struct tty_struct *tty;
++	unsigned char *data = urb->transfer_buffer;
++	int result;
++	int i;
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	if (urb->status) {
++		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
++		return;
++	}
++
++	//usb_serial_dbg_data(__FILE__,  __FUNCTION__, urb->actual_length, data);
++
++	tty = port->tty;
++	if (tty && urb->actual_length) {
++	   #if 0
++		tty_buffer_request_room(tty, urb->actual_length);
++		tty_insert_flip_string(tty, data, urb->actual_length);
++	  	tty_flip_buffer_push(tty);
++           #endif
++           #if 1
++                for (i = 0; i < urb->actual_length ; ++i) {
++                        /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
++                        if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
++                                tty_flip_buffer_push(tty);
++                        }
++                        /* this doesn't actually push the data through unless tty->low_latency is set */
++                        tty_insert_flip_char(tty, data[i], 0);
++                }
++                tty_flip_buffer_push(tty);
++           #endif
++
++	}
++	else
++		dbg("%s: empty read urb received", __FUNCTION__);
++
++	/* Continue trying to always read  */
++	usb_fill_bulk_urb (port->read_urb, serial->dev,
++			   usb_rcvbulkpipe (serial->dev,
++				   	    port->bulk_in_endpointAddress),
++			   port->read_urb->transfer_buffer,
++			   port->read_urb->transfer_buffer_length,
++			   ((serial->type->read_bulk_callback) ? 
++			     serial->type->read_bulk_callback : 
++			     sw_usb_serial_generic_read_bulk_callback), port);
++	result = usb_submit_urb(port->read_urb);
++        //result = usb_submit_urb(port->read_urb, GFP_ATOMIC); //for kernel 2.6
++	if (result)
++		dbg("%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
++}
++#if 1
++static int generic_open (struct usb_serial_port *port, struct file *filp)
++{
++	struct usb_serial *serial = port->serial;
++	int result = 0;
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	/* force low_latency on so that our tty_push actually forces the data through, 
++	   otherwise it is scheduled, and with high data rates (like with OHCI) data
++	   can get lost. */
++	if (port->tty)
++		port->tty->low_latency = 1;
++
++	/* if we have a bulk interrupt, start reading from it */
++	if (serial->num_bulk_in) {
++		/* Start reading from the device */
++		usb_fill_bulk_urb (port->read_urb, serial->dev,
++				   usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
++				   port->read_urb->transfer_buffer,
++				   port->read_urb->transfer_buffer_length,
++				   ((serial->type->read_bulk_callback) ?
++				     serial->type->read_bulk_callback :
++				     sw_usb_serial_generic_read_bulk_callback),
++				   port);
++		result = usb_submit_urb(port->read_urb); //, GFP_KERNEL);
++		if (result)
++			//dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
++			dbg("%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
++
++	}
++
++	return result;
++}
++#endif
++int sw_usb_serial_generic_open (struct usb_serial_port *port, struct file *filp)
++{
++	int rc;
++	struct usb_serial *serial = port->serial;
++	struct usb_device *hdev = serial->dev;
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	rc = generic_open(port, filp);
++	err("%s - rc(%d)", __FUNCTION__, rc);
++
++	if(0 == rc)
++	{
++		rc = usb_control_msg(
++			hdev, 
++			usb_sndctrlpipe(hdev, 0),
++			SET_CONTROL_LINE_STATE,				/* bRequest */ 
++			USB_TYPE_CLASS|USB_RECIP_INTERFACE, 		/* bmRequestType */
++			ACM_CTRL_DTR|ACM_CTRL_RTS,			/* wValue */
++			0,						/* wIndex */
++			NULL, 						/* Data */
++			0, 						/* wLength */
++			1000);						/* Timeout */
++		err("%s - usb_control_msg: rc(%d)", __FUNCTION__, rc);
++	}
++
++	return rc;
++}
++
++static void generic_cleanup (struct usb_serial_port *port)
++{
++	struct usb_serial *serial = port->serial;
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	if (serial->dev) {
++		/* shutdown any bulk reads that might be going on */
++		if (serial->num_bulk_out)
++			usb_unlink_urb(port->write_urb);
++			//usb_kill_urb(port->write_urb);
++		if (serial->num_bulk_in)
++			usb_unlink_urb(port->read_urb);
++			//usb_kill_urb(port->read_urb);
++	}
++}
++
++static void sw_usb_serial_generic_close (struct usb_serial_port *port, struct file * filp)
++{
++	int rc;
++	struct usb_serial *serial = port->serial;
++	struct usb_device *hdev = serial->dev;
++
++	dbg("%s - port %d", __FUNCTION__, port->number);
++
++	rc = usb_control_msg(
++		hdev, 
++		usb_sndctrlpipe(hdev, 0),
++		SET_CONTROL_LINE_STATE,				/* bRequest */ 
++		USB_TYPE_CLASS|USB_RECIP_INTERFACE, 		/* bmRequestType */
++		0, 						/* wValue */
++		0,						/* wIndex */
++		NULL, 						/* Data */
++		0, 						/* wLength */
++		1000);						/* Timeout */
++	err("%s - rc(%d)", __FUNCTION__, rc);
++	
++	generic_cleanup (port);
++}
++
++static void sw_usb_serial_generic_shutdown(struct usb_serial *serial)
++{
++	int i, rc;
++	struct usb_device *hdev = serial->dev;
++
++	dbg("%s serial(0x%p)", __FUNCTION__, serial);
++
++	if(hdev)
++	{
++		rc = usb_control_msg(
++			hdev, 
++			usb_sndctrlpipe(hdev, 0),
++			USB_VENDER_REQUEST_SET_DEVICE_POWER_STATE,	/* bRequest */ 
++			USB_TYPE_VENDOR|USB_RECIP_DEVICE, 		/* bmRequestType */
++			USB_DEVICE_POWER_STATE_D3, 			/* wValue */
++			0,						/* wIndex */
++			NULL, 						/* Data */
++			0, 						/* wLength */
++			1000);						/* Timeout */
++		err("%s - rc(%d)", __FUNCTION__, rc);
++	}
++
++	/* stop reads and writes on all ports */
++	for (i=0; i < serial->num_ports; ++i) {
++		generic_cleanup(&serial->port[i]);
++	}
++}
++int usb_serial_register(struct usb_serial_device_type *new_device)
++{
++        /* Add this device to our list of devices */
++        list_add(&new_device->driver_list, &usb_serial_driver_list);
++
++        info ("USB Serial support registered for %s", new_device->name);
++
++        usb_scan_devices();
++
++        return 0;
++}
++
++
++void usb_serial_deregister(struct usb_serial_device_type *device)
++{
++        struct usb_serial *serial;
++        int i;
++
++        info("USB Serial deregistering driver %s", device->name);
++
++        /* clear out the serial_table if the device is attached to a port */
++        for(i = 0; i < SERIAL_TTY_MINORS; ++i) {
++                serial = serial_table[i];
++                if ((serial != NULL) && (serial->type == device)) {
++                        usb_driver_release_interface (&sierra_driver, serial->interface);
++                        usb_serial_disconnect (NULL, serial);
++                }
++        }
++
++        list_del(&device->driver_list);
++}
++
++static int __init sierra_init(void)
++{
++	int retval;
++	int i;
++
++        /* Initalize our global data */
++        for (i = 0; i < SERIAL_TTY_MINORS; ++i) {
++                serial_table[i] = NULL;
++        }
++
++        /* register the tty driver */
++        serial_tty_driver.init_termios          = tty_std_termios;
++        serial_tty_driver.init_termios.c_cflag  = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
++        if (tty_register_driver (&serial_tty_driver)) {
++                err("%s - failed to register tty driver", __FUNCTION__);
++                return -1;
++        }
++
++	retval = usb_serial_register(&sierra_device);
++	if (retval)
++	{
++		tty_unregister_driver(&serial_tty_driver);
++		printk("%s return usb_serial_register. retval=[%d].\n",__FUNCTION__, retval);
++		return retval;
++	}
++	retval = usb_register(&sierra_driver);
++        if (retval){
++		usb_serial_deregister(&sierra_device);
++                tty_unregister_driver(&serial_tty_driver);
++                err("usb_register failed for the Sierra 3G USB-Serial driver. Error number %d\n", retval);
++                return -1;
++        }
++
++	return retval;
++}
++
++static void __exit sierra_exit(void)
++{
++	usb_deregister(&sierra_driver);
++	usb_serial_deregister(&sierra_device);
++}
++
++module_init(sierra_init);
++module_exit(sierra_exit);
++MODULE_LICENSE("GPL");
+diff -Naur linux-2.4.35.4-old/drivers/usb/serial/sierra.h linux-2.4.35.4/drivers/usb/serial/sierra.h
+--- linux-2.4.35.4-old/drivers/usb/serial/sierra.h	1969-12-31 17:00:00.000000000 -0700
++++ linux-2.4.35.4/drivers/usb/serial/sierra.h	2008-01-25 10:15:35.640743578 -0700
+@@ -0,0 +1,32 @@
++/*
++ * Sierra Wireless CDMA Wireless Serial USB drive
++ * 
++ * Current Copy modified by: Kevin Lloyd <linux@sierrawireless.com>
++ * Original Copy written by: 2005 Greg Kroah-Hartman <gregkh <at> suse.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.
++ *
++ * Version history:
++  Version 1.03 (Lloyd):
++  Included support for DTR control and enhanced buffering (should help
++  speed).
++ */
++
++#define USB_VENDER_REQUEST_SET_DEVICE_POWER_STATE 0
++
++#define USB_DEVICE_POWER_STATE_D0       0x0000
++#define USB_DEVICE_POWER_STATE_D1       0x0001
++#define USB_DEVICE_POWER_STATE_D2       0x0002
++#define USB_DEVICE_POWER_STATE_D3       0x0003
++
++#define SET_CONTROL_LINE_STATE          0x22
++/*
++ * Output control lines.
++ */
++
++#define ACM_CTRL_DTR            0x01
++#define ACM_CTRL_RTS            0x02
++
diff --git a/target/linux/brcm-2.4/patches/015-sierra_kconfig.patch b/target/linux/brcm-2.4/patches/015-sierra_kconfig.patch
new file mode 100644
index 0000000000..ed31619297
--- /dev/null
+++ b/target/linux/brcm-2.4/patches/015-sierra_kconfig.patch
@@ -0,0 +1,22 @@
+diff -Naur linux-2.4.35.4.orig/drivers/usb/serial/Config.in linux-2.4.35.4/drivers/usb/serial/Config.in
+--- linux-2.4.35.4.orig/drivers/usb/serial/Config.in	2008-01-25 10:09:11.541747549 -0700
++++ linux-2.4.35.4/drivers/usb/serial/Config.in	2008-01-25 10:17:01.890745265 -0700
+@@ -39,6 +39,7 @@
+    dep_tristate '  USB KOBIL chipcard reader (EXPERIMENTAL)' CONFIG_USB_SERIAL_KOBIL_SCT $CONFIG_USB_SERIAL $CONFIG_EXPERIMENTAL
+    dep_tristate '  USB Prolific 2303 Single Port Serial Driver' CONFIG_USB_SERIAL_PL2303 $CONFIG_USB_SERIAL
+    dep_tristate '  USB REINER SCT cyberJack pinpad/e-com chipcard reader (EXPERIMENTAL)' CONFIG_USB_SERIAL_CYBERJACK $CONFIG_USB_SERIAL $CONFIG_EXPERIMENTAL
++   dep_tristate '  USB Sierra Wireless Driver' CONFIG_USB_SERIAL_SIERRAWIRELESS $CONFIG_USB_SERIAL
+    dep_tristate '  USB Xircom / Entregra Single Port Serial Driver (EXPERIMENTAL)' CONFIG_USB_SERIAL_XIRCOM $CONFIG_USB_SERIAL $CONFIG_EXPERIMENTAL
+    dep_tristate '  USB ZyXEL omni.net LCD Plus Driver (EXPERIMENTAL)' CONFIG_USB_SERIAL_OMNINET $CONFIG_USB_SERIAL $CONFIG_EXPERIMENTAL
+ fi
+diff -Naur linux-2.4.35.4.orig/drivers/usb/serial/Makefile linux-2.4.35.4/drivers/usb/serial/Makefile
+--- linux-2.4.35.4.orig/drivers/usb/serial/Makefile	2008-01-25 10:09:11.542749582 -0700
++++ linux-2.4.35.4/drivers/usb/serial/Makefile	2008-01-25 10:17:37.412855271 -0700
+@@ -26,6 +26,7 @@
+ obj-$(CONFIG_USB_SERIAL_IR)			+= ir-usb.o
+ obj-$(CONFIG_USB_SERIAL_KLSI)			+= kl5kusb105.o
+ obj-$(CONFIG_USB_SERIAL_KOBIL_SCT)		+= kobil_sct.o
++obj-$(CONFIG_USB_SERIAL_SIERRAWIRELESS)	+= sierra.o
+ 
+ # Objects that export symbols.
+ export-objs	:= usbserial.o