Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 1752 deletions

diff --git a/ANDROID_3.4.5/drivers/usb/class/cdc-acm.c b/ANDROID_3.4.5/drivers/usb/class/cdc-acm.c
deleted file mode 100644
index 640cf798..00000000
--- a/ANDROID_3.4.5/drivers/usb/class/cdc-acm.c
+++ /dev/null
@@ -1,1752 +0,0 @@
-/*
- * cdc-acm.c
- *
- * Copyright (c) 1999 Armin Fuerst	<fuerst@in.tum.de>
- * Copyright (c) 1999 Pavel Machek	<pavel@ucw.cz>
- * Copyright (c) 1999 Johannes Erdfelt	<johannes@erdfelt.com>
- * Copyright (c) 2000 Vojtech Pavlik	<vojtech@suse.cz>
- * Copyright (c) 2004 Oliver Neukum	<oliver@neukum.name>
- * Copyright (c) 2005 David Kubicek	<dave@awk.cz>
- * Copyright (c) 2011 Johan Hovold	<jhovold@gmail.com>
- *
- * USB Abstract Control Model driver for USB modems and ISDN adapters
- *
- * Sponsored by SuSE
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#undef DEBUG
-#undef VERBOSE_DEBUG
-
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/tty.h>
-#include <linux/serial.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/serial.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/uaccess.h>
-#include <linux/usb.h>
-#include <linux/usb/cdc.h>
-#include <asm/byteorder.h>
-#include <asm/unaligned.h>
-#include <linux/list.h>
-
-#include "cdc-acm.h"
-
-
-#define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold"
-#define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters"
-
-static struct usb_driver acm_driver;
-static struct tty_driver *acm_tty_driver;
-static struct acm *acm_table[ACM_TTY_MINORS];
-
-static DEFINE_MUTEX(acm_table_lock);
-
-/*
- * acm_table accessors
- */
-
-/*
- * Look up an ACM structure by index. If found and not disconnected, increment
- * its refcount and return it with its mutex held.
- */
-static struct acm *acm_get_by_index(unsigned index)
-{
-	struct acm *acm;
-
-	mutex_lock(&acm_table_lock);
-	acm = acm_table[index];
-	if (acm) {
-		mutex_lock(&acm->mutex);
-		if (acm->disconnected) {
-			mutex_unlock(&acm->mutex);
-			acm = NULL;
-		} else {
-			tty_port_get(&acm->port);
-			mutex_unlock(&acm->mutex);
-		}
-	}
-	mutex_unlock(&acm_table_lock);
-	return acm;
-}
-
-/*
- * Try to find an available minor number and if found, associate it with 'acm'.
- */
-static int acm_alloc_minor(struct acm *acm)
-{
-	int minor;
-
-	mutex_lock(&acm_table_lock);
-	for (minor = 0; minor < ACM_TTY_MINORS; minor++) {
-		if (!acm_table[minor]) {
-			acm_table[minor] = acm;
-			break;
-		}
-	}
-	mutex_unlock(&acm_table_lock);
-
-	return minor;
-}
-
-/* Release the minor number associated with 'acm'.  */
-static void acm_release_minor(struct acm *acm)
-{
-	mutex_lock(&acm_table_lock);
-	acm_table[acm->minor] = NULL;
-	mutex_unlock(&acm_table_lock);
-}
-
-/*
- * Functions for ACM control messages.
- */
-
-static int acm_ctrl_msg(struct acm *acm, int request, int value,
-							void *buf, int len)
-{
-	int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
-		request, USB_RT_ACM, value,
-		acm->control->altsetting[0].desc.bInterfaceNumber,
-		buf, len, 5000);
-	dev_dbg(&acm->control->dev,
-			"%s - rq 0x%02x, val %#x, len %#x, result %d\n",
-			__func__, request, value, len, retval);
-	return retval < 0 ? retval : 0;
-}
-
-/* devices aren't required to support these requests.
- * the cdc acm descriptor tells whether they do...
- */
-#define acm_set_control(acm, control) \
-	acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
-#define acm_set_line(acm, line) \
-	acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
-#define acm_send_break(acm, ms) \
-	acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
-
-/*
- * Write buffer management.
- * All of these assume proper locks taken by the caller.
- */
-
-static int acm_wb_alloc(struct acm *acm)
-{
-	int i, wbn;
-	struct acm_wb *wb;
-
-	wbn = 0;
-	i = 0;
-	for (;;) {
-		wb = &acm->wb[wbn];
-		if (!wb->use) {
-			wb->use = 1;
-			return wbn;
-		}
-		wbn = (wbn + 1) % ACM_NW;
-		if (++i >= ACM_NW)
-			return -1;
-	}
-}
-
-static int acm_wb_is_avail(struct acm *acm)
-{
-	int i, n;
-	unsigned long flags;
-
-	n = ACM_NW;
-	spin_lock_irqsave(&acm->write_lock, flags);
-	for (i = 0; i < ACM_NW; i++)
-		n -= acm->wb[i].use;
-	spin_unlock_irqrestore(&acm->write_lock, flags);
-	return n;
-}
-
-/*
- * Finish write. Caller must hold acm->write_lock
- */
-static void acm_write_done(struct acm *acm, struct acm_wb *wb)
-{
-	wb->use = 0;
-	acm->transmitting--;
-	usb_autopm_put_interface_async(acm->control);
-}
-
-/*
- * Poke write.
- *
- * the caller is responsible for locking
- */
-
-static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
-{
-	int rc;
-
-	acm->transmitting++;
-
-	wb->urb->transfer_buffer = wb->buf;
-	wb->urb->transfer_dma = wb->dmah;
-	wb->urb->transfer_buffer_length = wb->len;
-	wb->urb->dev = acm->dev;
-
-	rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
-	if (rc < 0) {
-		dev_err(&acm->data->dev,
-			"%s - usb_submit_urb(write bulk) failed: %d\n",
-			__func__, rc);
-		acm_write_done(acm, wb);
-	}
-	return rc;
-}
-
-static int acm_write_start(struct acm *acm, int wbn)
-{
-	unsigned long flags;
-	struct acm_wb *wb = &acm->wb[wbn];
-	int rc;
-
-	spin_lock_irqsave(&acm->write_lock, flags);
-	if (!acm->dev) {
-		wb->use = 0;
-		spin_unlock_irqrestore(&acm->write_lock, flags);
-		return -ENODEV;
-	}
-
-	dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__,
-							acm->susp_count);
-	usb_autopm_get_interface_async(acm->control);
-	if (acm->susp_count) {
-		if (!acm->delayed_wb)
-			acm->delayed_wb = wb;
-		else
-			usb_autopm_put_interface_async(acm->control);
-		spin_unlock_irqrestore(&acm->write_lock, flags);
-		return 0;	/* A white lie */
-	}
-	usb_mark_last_busy(acm->dev);
-
-	rc = acm_start_wb(acm, wb);
-	spin_unlock_irqrestore(&acm->write_lock, flags);
-
-	return rc;
-
-}
-/*
- * attributes exported through sysfs
- */
-static ssize_t show_caps
-(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct usb_interface *intf = to_usb_interface(dev);
-	struct acm *acm = usb_get_intfdata(intf);
-
-	return sprintf(buf, "%d", acm->ctrl_caps);
-}
-static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
-
-static ssize_t show_country_codes
-(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct usb_interface *intf = to_usb_interface(dev);
-	struct acm *acm = usb_get_intfdata(intf);
-
-	memcpy(buf, acm->country_codes, acm->country_code_size);
-	return acm->country_code_size;
-}
-
-static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
-
-static ssize_t show_country_rel_date
-(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct usb_interface *intf = to_usb_interface(dev);
-	struct acm *acm = usb_get_intfdata(intf);
-
-	return sprintf(buf, "%d", acm->country_rel_date);
-}
-
-static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
-/*
- * Interrupt handlers for various ACM device responses
- */
-
-/* control interface reports status changes with "interrupt" transfers */
-static void acm_ctrl_irq(struct urb *urb)
-{
-	struct acm *acm = urb->context;
-	struct usb_cdc_notification *dr = urb->transfer_buffer;
-	struct tty_struct *tty;
-	unsigned char *data;
-	int newctrl;
-	int retval;
-	int status = urb->status;
-
-	switch (status) {
-	case 0:
-		/* success */
-		break;
-	case -ECONNRESET:
-	case -ENOENT:
-	case -ESHUTDOWN:
-		/* this urb is terminated, clean up */
-		dev_dbg(&acm->control->dev,
-				"%s - urb shutting down with status: %d\n",
-				__func__, status);
-		return;
-	default:
-		dev_dbg(&acm->control->dev,
-				"%s - nonzero urb status received: %d\n",
-				__func__, status);
-		goto exit;
-	}
-
-	usb_mark_last_busy(acm->dev);
-
-	data = (unsigned char *)(dr + 1);
-	switch (dr->bNotificationType) {
-	case USB_CDC_NOTIFY_NETWORK_CONNECTION:
-		dev_dbg(&acm->control->dev, "%s - network connection: %d\n",
-							__func__, dr->wValue);
-		break;
-
-	case USB_CDC_NOTIFY_SERIAL_STATE:
-		tty = tty_port_tty_get(&acm->port);
-		newctrl = get_unaligned_le16(data);
-
-		if (tty) {
-			if (!acm->clocal &&
-				(acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
-				dev_dbg(&acm->control->dev,
-					"%s - calling hangup\n", __func__);
-				tty_hangup(tty);
-			}
-			tty_kref_put(tty);
-		}
-
-		acm->ctrlin = newctrl;
-
-		dev_dbg(&acm->control->dev,
-			"%s - input control lines: dcd%c dsr%c break%c "
-			"ring%c framing%c parity%c overrun%c\n",
-			__func__,
-			acm->ctrlin & ACM_CTRL_DCD ? '+' : '-',
-			acm->ctrlin & ACM_CTRL_DSR ? '+' : '-',
-			acm->ctrlin & ACM_CTRL_BRK ? '+' : '-',
-			acm->ctrlin & ACM_CTRL_RI  ? '+' : '-',
-			acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-',
-			acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-',
-			acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-');
-			break;
-
-	default:
-		dev_dbg(&acm->control->dev,
-			"%s - unknown notification %d received: index %d "
-			"len %d data0 %d data1 %d\n",
-			__func__,
-			dr->bNotificationType, dr->wIndex,
-			dr->wLength, data[0], data[1]);
-		break;
-	}
-exit:
-	retval = usb_submit_urb(urb, GFP_ATOMIC);
-	if (retval)
-		dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n",
-							__func__, retval);
-}
-
-static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
-{
-	int res;
-
-	if (!test_and_clear_bit(index, &acm->read_urbs_free))
-		return 0;
-
-	dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index);
-
-	res = usb_submit_urb(acm->read_urbs[index], mem_flags);
-	if (res) {
-		if (res != -EPERM) {
-			dev_err(&acm->data->dev,
-					"%s - usb_submit_urb failed: %d\n",
-					__func__, res);
-		}
-		set_bit(index, &acm->read_urbs_free);
-		return res;
-	}
-
-	return 0;
-}
-
-static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags)
-{
-	int res;
-	int i;
-
-	for (i = 0; i < acm->rx_buflimit; ++i) {
-		res = acm_submit_read_urb(acm, i, mem_flags);
-		if (res)
-			return res;
-	}
-
-	return 0;
-}
-
-static void acm_process_read_urb(struct acm *acm, struct urb *urb)
-{
-	struct tty_struct *tty;
-
-	if (!urb->actual_length)
-		return;
-
-	tty = tty_port_tty_get(&acm->port);
-	if (!tty)
-		return;
-
-	tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length);
-	tty_flip_buffer_push(tty);
-
-	tty_kref_put(tty);
-}
-
-static void acm_read_bulk_callback(struct urb *urb)
-{
-	struct acm_rb *rb = urb->context;
-	struct acm *acm = rb->instance;
-	unsigned long flags;
-
-	dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__,
-					rb->index, urb->actual_length);
-	set_bit(rb->index, &acm->read_urbs_free);
-
-	if (!acm->dev) {
-		dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__);
-		return;
-	}
-	usb_mark_last_busy(acm->dev);
-
-	if (urb->status) {
-		dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
-							__func__, urb->status);
-		return;
-	}
-	acm_process_read_urb(acm, urb);
-
-	/* throttle device if requested by tty */
-	spin_lock_irqsave(&acm->read_lock, flags);
-	acm->throttled = acm->throttle_req;
-	if (!acm->throttled && !acm->susp_count) {
-		spin_unlock_irqrestore(&acm->read_lock, flags);
-		acm_submit_read_urb(acm, rb->index, GFP_ATOMIC);
-	} else {
-		spin_unlock_irqrestore(&acm->read_lock, flags);
-	}
-}
-
-/* data interface wrote those outgoing bytes */
-static void acm_write_bulk(struct urb *urb)
-{
-	struct acm_wb *wb = urb->context;
-	struct acm *acm = wb->instance;
-	unsigned long flags;
-
-	if (urb->status	|| (urb->actual_length != urb->transfer_buffer_length))
-		dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n",
-			__func__,
-			urb->actual_length,
-			urb->transfer_buffer_length,
-			urb->status);
-
-	spin_lock_irqsave(&acm->write_lock, flags);
-	acm_write_done(acm, wb);
-	spin_unlock_irqrestore(&acm->write_lock, flags);
-	schedule_work(&acm->work);
-}
-
-static void acm_softint(struct work_struct *work)
-{
-	struct acm *acm = container_of(work, struct acm, work);
-	struct tty_struct *tty;
-
-	dev_vdbg(&acm->data->dev, "%s\n", __func__);
-
-	tty = tty_port_tty_get(&acm->port);
-	if (!tty)
-		return;
-	tty_wakeup(tty);
-	tty_kref_put(tty);
-}
-
-/*
- * TTY handlers
- */
-
-static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
-{
-	struct acm *acm;
-	int retval;
-
-	dev_dbg(tty->dev, "%s\n", __func__);
-
-	acm = acm_get_by_index(tty->index);
-	if (!acm)
-		return -ENODEV;
-
-	retval = tty_standard_install(driver, tty);
-	if (retval)
-		goto error_init_termios;
-
-	tty->driver_data = acm;
-
-	return 0;
-
-error_init_termios:
-	tty_port_put(&acm->port);
-	return retval;
-}
-
-static int acm_tty_open(struct tty_struct *tty, struct file *filp)
-{
-	struct acm *acm = tty->driver_data;
-
-	dev_dbg(tty->dev, "%s\n", __func__);
-
-	return tty_port_open(&acm->port, tty, filp);
-}
-
-static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
-{
-	struct acm *acm = container_of(port, struct acm, port);
-	int retval = -ENODEV;
-
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
-
-	mutex_lock(&acm->mutex);
-	if (acm->disconnected)
-		goto disconnected;
-
-	retval = usb_autopm_get_interface(acm->control);
-	if (retval)
-		goto error_get_interface;
-
-	/*
-	 * FIXME: Why do we need this? Allocating 64K of physically contiguous
-	 * memory is really nasty...
-	 */
-	set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
-	acm->control->needs_remote_wakeup = 1;
-
-	acm->ctrlurb->dev = acm->dev;
-	if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
-		dev_err(&acm->control->dev,
-			"%s - usb_submit_urb(ctrl irq) failed\n", __func__);
-		goto error_submit_urb;
-	}
-
-	acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS;
-	if (acm_set_control(acm, acm->ctrlout) < 0 &&
-	    (acm->ctrl_caps & USB_CDC_CAP_LINE))
-		goto error_set_control;
-
-	usb_autopm_put_interface(acm->control);
-
-	/*
-	 * Unthrottle device in case the TTY was closed while throttled.
-	 */
-	spin_lock_irq(&acm->read_lock);
-	acm->throttled = 0;
-	acm->throttle_req = 0;
-	spin_unlock_irq(&acm->read_lock);
-
-	if (acm_submit_read_urbs(acm, GFP_KERNEL))
-		goto error_submit_read_urbs;
-
-	mutex_unlock(&acm->mutex);
-
-	return 0;
-
-error_submit_read_urbs:
-	acm->ctrlout = 0;
-	acm_set_control(acm, acm->ctrlout);
-error_set_control:
-	usb_kill_urb(acm->ctrlurb);
-error_submit_urb:
-	usb_autopm_put_interface(acm->control);
-error_get_interface:
-disconnected:
-	mutex_unlock(&acm->mutex);
-	return retval;
-}
-
-static void acm_port_destruct(struct tty_port *port)
-{
-	struct acm *acm = container_of(port, struct acm, port);
-
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
-
-	tty_unregister_device(acm_tty_driver, acm->minor);
-	acm_release_minor(acm);
-	usb_put_intf(acm->control);
-	kfree(acm->country_codes);
-	kfree(acm);
-}
-
-static void acm_port_shutdown(struct tty_port *port)
-{
-	struct acm *acm = container_of(port, struct acm, port);
-	int i;
-
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
-
-	mutex_lock(&acm->mutex);
-	if (!acm->disconnected) {
-		usb_autopm_get_interface(acm->control);
-		acm_set_control(acm, acm->ctrlout = 0);
-		usb_kill_urb(acm->ctrlurb);
-		for (i = 0; i < ACM_NW; i++)
-			usb_kill_urb(acm->wb[i].urb);
-		for (i = 0; i < acm->rx_buflimit; i++)
-			usb_kill_urb(acm->read_urbs[i]);
-		acm->control->needs_remote_wakeup = 0;
-		usb_autopm_put_interface(acm->control);
-	}
-	mutex_unlock(&acm->mutex);
-}
-
-static void acm_tty_cleanup(struct tty_struct *tty)
-{
-	struct acm *acm = tty->driver_data;
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
-	tty_port_put(&acm->port);
-}
-
-static void acm_tty_hangup(struct tty_struct *tty)
-{
-	struct acm *acm = tty->driver_data;
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
-	tty_port_hangup(&acm->port);
-}
-
-static void acm_tty_close(struct tty_struct *tty, struct file *filp)
-{
-	struct acm *acm = tty->driver_data;
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
-	tty_port_close(&acm->port, tty, filp);
-}
-
-static int acm_tty_write(struct tty_struct *tty,
-					const unsigned char *buf, int count)
-{
-	struct acm *acm = tty->driver_data;
-	int stat;
-	unsigned long flags;
-	int wbn;
-	struct acm_wb *wb;
-
-	if (!count)
-		return 0;
-
-	dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count);
-
-	spin_lock_irqsave(&acm->write_lock, flags);
-	wbn = acm_wb_alloc(acm);
-	if (wbn < 0) {
-		spin_unlock_irqrestore(&acm->write_lock, flags);
-		return 0;
-	}
-	wb = &acm->wb[wbn];
-
-	count = (count > acm->writesize) ? acm->writesize : count;
-	dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count);
-	memcpy(wb->buf, buf, count);
-	wb->len = count;
-	spin_unlock_irqrestore(&acm->write_lock, flags);
-
-	stat = acm_write_start(acm, wbn);
-	if (stat < 0)
-		return stat;
-	return count;
-}
-
-static int acm_tty_write_room(struct tty_struct *tty)
-{
-	struct acm *acm = tty->driver_data;
-	/*
-	 * Do not let the line discipline to know that we have a reserve,
-	 * or it might get too enthusiastic.
-	 */
-	return acm_wb_is_avail(acm) ? acm->writesize : 0;
-}
-
-static int acm_tty_chars_in_buffer(struct tty_struct *tty)
-{
-	struct acm *acm = tty->driver_data;
-	/*
-	 * if the device was unplugged then any remaining characters fell out
-	 * of the connector ;)
-	 */
-	if (acm->disconnected)
-		return 0;
-	/*
-	 * This is inaccurate (overcounts), but it works.
-	 */
-	return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
-}
-
-static void acm_tty_throttle(struct tty_struct *tty)
-{
-	struct acm *acm = tty->driver_data;
-
-	spin_lock_irq(&acm->read_lock);
-	acm->throttle_req = 1;
-	spin_unlock_irq(&acm->read_lock);
-}
-
-static void acm_tty_unthrottle(struct tty_struct *tty)
-{
-	struct acm *acm = tty->driver_data;
-	unsigned int was_throttled;
-
-	spin_lock_irq(&acm->read_lock);
-	was_throttled = acm->throttled;
-	acm->throttled = 0;
-	acm->throttle_req = 0;
-	spin_unlock_irq(&acm->read_lock);
-
-	if (was_throttled)
-		acm_submit_read_urbs(acm, GFP_KERNEL);
-}
-
-static int acm_tty_break_ctl(struct tty_struct *tty, int state)
-{
-	struct acm *acm = tty->driver_data;
-	int retval;
-
-	retval = acm_send_break(acm, state ? 0xffff : 0);
-	if (retval < 0)
-		dev_dbg(&acm->control->dev, "%s - send break failed\n",
-								__func__);
-	return retval;
-}
-
-static int acm_tty_tiocmget(struct tty_struct *tty)
-{
-	struct acm *acm = tty->driver_data;
-
-	return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
-	       (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
-	       (acm->ctrlin  & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
-	       (acm->ctrlin  & ACM_CTRL_RI  ? TIOCM_RI  : 0) |
-	       (acm->ctrlin  & ACM_CTRL_DCD ? TIOCM_CD  : 0) |
-	       TIOCM_CTS;
-}
-
-static int acm_tty_tiocmset(struct tty_struct *tty,
-			    unsigned int set, unsigned int clear)
-{
-	struct acm *acm = tty->driver_data;
-	unsigned int newctrl;
-
-	newctrl = acm->ctrlout;
-	set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
-					(set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
-	clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
-					(clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
-
-	newctrl = (newctrl & ~clear) | set;
-
-	if (acm->ctrlout == newctrl)
-		return 0;
-	return acm_set_control(acm, acm->ctrlout = newctrl);
-}
-
-static int get_serial_info(struct acm *acm, struct serial_struct __user *info)
-{
-	struct serial_struct tmp;
-
-	if (!info)
-		return -EINVAL;
-
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.flags = ASYNC_LOW_LATENCY;
-	tmp.xmit_fifo_size = acm->writesize;
-	tmp.baud_base = le32_to_cpu(acm->line.dwDTERate);
-
-	if (copy_to_user(info, &tmp, sizeof(tmp)))
-		return -EFAULT;
-	else
-		return 0;
-}
-
-static int acm_tty_ioctl(struct tty_struct *tty,
-					unsigned int cmd, unsigned long arg)
-{
-	struct acm *acm = tty->driver_data;
-	int rv = -ENOIOCTLCMD;
-
-	switch (cmd) {
-	case TIOCGSERIAL: /* gets serial port data */
-		rv = get_serial_info(acm, (struct serial_struct __user *) arg);
-		break;
-	}
-
-	return rv;
-}
-
-static const __u32 acm_tty_speed[] = {
-	0, 50, 75, 110, 134, 150, 200, 300, 600,
-	1200, 1800, 2400, 4800, 9600, 19200, 38400,
-	57600, 115200, 230400, 460800, 500000, 576000,
-	921600, 1000000, 1152000, 1500000, 2000000,
-	2500000, 3000000, 3500000, 4000000
-};
-
-static const __u8 acm_tty_size[] = {
-	5, 6, 7, 8
-};
-
-static void acm_tty_set_termios(struct tty_struct *tty,
-						struct ktermios *termios_old)
-{
-	struct acm *acm = tty->driver_data;
-	struct ktermios *termios = tty->termios;
-	struct usb_cdc_line_coding newline;
-	int newctrl = acm->ctrlout;
-
-	newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
-	newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
-	newline.bParityType = termios->c_cflag & PARENB ?
-				(termios->c_cflag & PARODD ? 1 : 2) +
-				(termios->c_cflag & CMSPAR ? 2 : 0) : 0;
-	newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4];
-	/* FIXME: Needs to clear unsupported bits in the termios */
-	acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
-
-	if (!newline.dwDTERate) {
-		newline.dwDTERate = acm->line.dwDTERate;
-		newctrl &= ~ACM_CTRL_DTR;
-	} else
-		newctrl |=  ACM_CTRL_DTR;
-
-	if (newctrl != acm->ctrlout)
-		acm_set_control(acm, acm->ctrlout = newctrl);
-
-	if (memcmp(&acm->line, &newline, sizeof newline)) {
-		memcpy(&acm->line, &newline, sizeof newline);
-		dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
-			__func__,
-			le32_to_cpu(newline.dwDTERate),
-			newline.bCharFormat, newline.bParityType,
-			newline.bDataBits);
-		acm_set_line(acm, &acm->line);
-	}
-}
-
-static const struct tty_port_operations acm_port_ops = {
-	.shutdown = acm_port_shutdown,
-	.activate = acm_port_activate,
-	.destruct = acm_port_destruct,
-};
-
-/*
- * USB probe and disconnect routines.
- */
-
-/* Little helpers: write/read buffers free */
-static void acm_write_buffers_free(struct acm *acm)
-{
-	int i;
-	struct acm_wb *wb;
-	struct usb_device *usb_dev = interface_to_usbdev(acm->control);
-
-	for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
-		usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
-}
-
-static void acm_read_buffers_free(struct acm *acm)
-{
-	struct usb_device *usb_dev = interface_to_usbdev(acm->control);
-	int i;
-
-	for (i = 0; i < acm->rx_buflimit; i++)
-		usb_free_coherent(usb_dev, acm->readsize,
-			  acm->read_buffers[i].base, acm->read_buffers[i].dma);
-}
-
-/* Little helper: write buffers allocate */
-static int acm_write_buffers_alloc(struct acm *acm)
-{
-	int i;
-	struct acm_wb *wb;
-
-	for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
-		wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
-		    &wb->dmah);
-		if (!wb->buf) {
-			while (i != 0) {
-				--i;
-				--wb;
-				usb_free_coherent(acm->dev, acm->writesize,
-				    wb->buf, wb->dmah);
-			}
-			return -ENOMEM;
-		}
-	}
-	return 0;
-}
-
-static int acm_probe(struct usb_interface *intf,
-		     const struct usb_device_id *id)
-{
-	struct usb_cdc_union_desc *union_header = NULL;
-	struct usb_cdc_country_functional_desc *cfd = NULL;
-	unsigned char *buffer = intf->altsetting->extra;
-	int buflen = intf->altsetting->extralen;
-	struct usb_interface *control_interface;
-	struct usb_interface *data_interface;
-	struct usb_endpoint_descriptor *epctrl = NULL;
-	struct usb_endpoint_descriptor *epread = NULL;
-	struct usb_endpoint_descriptor *epwrite = NULL;
-	struct usb_device *usb_dev = interface_to_usbdev(intf);
-	struct acm *acm;
-	int minor;
-	int ctrlsize, readsize;
-	u8 *buf;
-	u8 ac_management_function = 0;
-	u8 call_management_function = 0;
-	int call_interface_num = -1;
-	int data_interface_num = -1;
-	unsigned long quirks;
-	int num_rx_buf;
-	int i;
-	int combined_interfaces = 0;
-
-	/* normal quirks */
-	quirks = (unsigned long)id->driver_info;
-	num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
-
-	/* handle quirks deadly to normal probing*/
-	if (quirks == NO_UNION_NORMAL) {
-		data_interface = usb_ifnum_to_if(usb_dev, 1);
-		control_interface = usb_ifnum_to_if(usb_dev, 0);
-		goto skip_normal_probe;
-	}
-
-	/* normal probing*/
-	if (!buffer) {
-		dev_err(&intf->dev, "Weird descriptor references\n");
-		return -EINVAL;
-	}
-
-	if (!buflen) {
-		if (intf->cur_altsetting->endpoint &&
-				intf->cur_altsetting->endpoint->extralen &&
-				intf->cur_altsetting->endpoint->extra) {
-			dev_dbg(&intf->dev,
-				"Seeking extra descriptors on endpoint\n");
-			buflen = intf->cur_altsetting->endpoint->extralen;
-			buffer = intf->cur_altsetting->endpoint->extra;
-		} else {
-			dev_err(&intf->dev,
-				"Zero length descriptor references\n");
-			return -EINVAL;
-		}
-	}
-
-	while (buflen > 0) {
-		if (buffer[1] != USB_DT_CS_INTERFACE) {
-			dev_err(&intf->dev, "skipping garbage\n");
-			goto next_desc;
-		}
-
-		switch (buffer[2]) {
-		case USB_CDC_UNION_TYPE: /* we've found it */
-			if (union_header) {
-				dev_err(&intf->dev, "More than one "
-					"union descriptor, skipping ...\n");
-				goto next_desc;
-			}
-			union_header = (struct usb_cdc_union_desc *)buffer;
-			break;
-		case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
-			cfd = (struct usb_cdc_country_functional_desc *)buffer;
-			break;
-		case USB_CDC_HEADER_TYPE: /* maybe check version */
-			break; /* for now we ignore it */
-		case USB_CDC_ACM_TYPE:
-			ac_management_function = buffer[3];
-			break;
-		case USB_CDC_CALL_MANAGEMENT_TYPE:
-			call_management_function = buffer[3];
-			call_interface_num = buffer[4];
-			if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
-				dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
-			break;
-		default:
-			/* there are LOTS more CDC descriptors that
-			 * could legitimately be found here.
-			 */
-			dev_dbg(&intf->dev, "Ignoring descriptor: "
-					"type %02x, length %d\n",
-					buffer[2], buffer[0]);
-			break;
-		}
-next_desc:
-		buflen -= buffer[0];
-		buffer += buffer[0];
-	}
-
-	if (!union_header) {
-		if (call_interface_num > 0) {
-			dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
-			/* quirks for Droids MuIn LCD */
-			if (quirks & NO_DATA_INTERFACE)
-				data_interface = usb_ifnum_to_if(usb_dev, 0);
-			else
-				data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
-			control_interface = intf;
-		} else {
-			if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
-				dev_dbg(&intf->dev,"No union descriptor, giving up\n");
-				return -ENODEV;
-			} else {
-				dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
-				combined_interfaces = 1;
-				control_interface = data_interface = intf;
-				goto look_for_collapsed_interface;
-			}
-		}
-	} else {
-		control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
-		data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
-		if (!control_interface || !data_interface) {
-			dev_dbg(&intf->dev, "no interfaces\n");
-			return -ENODEV;
-		}
-	}
-
-	if (data_interface_num != call_interface_num)
-		dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
-
-	if (control_interface == data_interface) {
-		/* some broken devices designed for windows work this way */
-		dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
-		combined_interfaces = 1;
-		/* a popular other OS doesn't use it */
-		quirks |= NO_CAP_LINE;
-		if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
-			dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
-			return -EINVAL;
-		}
-look_for_collapsed_interface:
-		for (i = 0; i < 3; i++) {
-			struct usb_endpoint_descriptor *ep;
-			ep = &data_interface->cur_altsetting->endpoint[i].desc;
-
-			if (usb_endpoint_is_int_in(ep))
-				epctrl = ep;
-			else if (usb_endpoint_is_bulk_out(ep))
-				epwrite = ep;
-			else if (usb_endpoint_is_bulk_in(ep))
-				epread = ep;
-			else
-				return -EINVAL;
-		}
-		if (!epctrl || !epread || !epwrite)
-			return -ENODEV;
-		else
-			goto made_compressed_probe;
-	}
-
-skip_normal_probe:
-
-	/*workaround for switched interfaces */
-	if (data_interface->cur_altsetting->desc.bInterfaceClass
-						!= CDC_DATA_INTERFACE_TYPE) {
-		if (control_interface->cur_altsetting->desc.bInterfaceClass
-						== CDC_DATA_INTERFACE_TYPE) {
-			struct usb_interface *t;
-			dev_dbg(&intf->dev,
-				"Your device has switched interfaces.\n");
-			t = control_interface;
-			control_interface = data_interface;
-			data_interface = t;
-		} else {
-			return -EINVAL;
-		}
-	}
-
-	/* Accept probe requests only for the control interface */
-	if (!combined_interfaces && intf != control_interface)
-		return -ENODEV;
-
-	if (!combined_interfaces && usb_interface_claimed(data_interface)) {
-		/* valid in this context */
-		dev_dbg(&intf->dev, "The data interface isn't available\n");
-		return -EBUSY;
-	}
-
-
-	if (data_interface->cur_altsetting->desc.bNumEndpoints < 2)
-		return -EINVAL;
-
-	epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
-	epread = &data_interface->cur_altsetting->endpoint[0].desc;
-	epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
-
-
-	/* workaround for switched endpoints */
-	if (!usb_endpoint_dir_in(epread)) {
-		/* descriptors are swapped */
-		struct usb_endpoint_descriptor *t;
-		dev_dbg(&intf->dev,
-			"The data interface has switched endpoints\n");
-		t = epread;
-		epread = epwrite;
-		epwrite = t;
-	}
-made_compressed_probe:
-	dev_dbg(&intf->dev, "interfaces are valid\n");
-
-	acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
-	if (acm == NULL) {
-		dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
-		goto alloc_fail;
-	}
-
-	minor = acm_alloc_minor(acm);
-	if (minor == ACM_TTY_MINORS) {
-		dev_err(&intf->dev, "no more free acm devices\n");
-		kfree(acm);
-		return -ENODEV;
-	}
-
-	ctrlsize = usb_endpoint_maxp(epctrl);
-	readsize = usb_endpoint_maxp(epread) *
-				(quirks == SINGLE_RX_URB ? 1 : 2);
-	acm->combined_interfaces = combined_interfaces;
-	acm->writesize = usb_endpoint_maxp(epwrite) * 20;
-	acm->control = control_interface;
-	acm->data = data_interface;
-	acm->minor = minor;
-	acm->dev = usb_dev;
-	acm->ctrl_caps = ac_management_function;
-	if (quirks & NO_CAP_LINE)
-		acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
-	acm->ctrlsize = ctrlsize;
-	acm->readsize = readsize;
-	acm->rx_buflimit = num_rx_buf;
-	INIT_WORK(&acm->work, acm_softint);
-	spin_lock_init(&acm->write_lock);
-	spin_lock_init(&acm->read_lock);
-	mutex_init(&acm->mutex);
-	acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
-	acm->is_int_ep = usb_endpoint_xfer_int(epread);
-	if (acm->is_int_ep)
-		acm->bInterval = epread->bInterval;
-	tty_port_init(&acm->port);
-	acm->port.ops = &acm_port_ops;
-
-	buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
-	if (!buf) {
-		dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
-		goto alloc_fail2;
-	}
-	acm->ctrl_buffer = buf;
-
-	if (acm_write_buffers_alloc(acm) < 0) {
-		dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
-		goto alloc_fail4;
-	}
-
-	acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!acm->ctrlurb) {
-		dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
-		goto alloc_fail5;
-	}
-	for (i = 0; i < num_rx_buf; i++) {
-		struct acm_rb *rb = &(acm->read_buffers[i]);
-		struct urb *urb;
-
-		rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
-								&rb->dma);
-		if (!rb->base) {
-			dev_err(&intf->dev, "out of memory "
-					"(read bufs usb_alloc_coherent)\n");
-			goto alloc_fail6;
-		}
-		rb->index = i;
-		rb->instance = acm;
-
-		urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!urb) {
-			dev_err(&intf->dev,
-				"out of memory (read urbs usb_alloc_urb)\n");
-			goto alloc_fail6;
-		}
-		urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-		urb->transfer_dma = rb->dma;
-		if (acm->is_int_ep) {
-			usb_fill_int_urb(urb, acm->dev,
-					 acm->rx_endpoint,
-					 rb->base,
-					 acm->readsize,
-					 acm_read_bulk_callback, rb,
-					 acm->bInterval);
-		} else {
-			usb_fill_bulk_urb(urb, acm->dev,
-					  acm->rx_endpoint,
-					  rb->base,
-					  acm->readsize,
-					  acm_read_bulk_callback, rb);
-		}
-
-		acm->read_urbs[i] = urb;
-		__set_bit(i, &acm->read_urbs_free);
-	}
-	for (i = 0; i < ACM_NW; i++) {
-		struct acm_wb *snd = &(acm->wb[i]);
-
-		snd->urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (snd->urb == NULL) {
-			dev_err(&intf->dev,
-				"out of memory (write urbs usb_alloc_urb)\n");
-			goto alloc_fail7;
-		}
-
-		if (usb_endpoint_xfer_int(epwrite))
-			usb_fill_int_urb(snd->urb, usb_dev,
-				usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
-				NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
-		else
-			usb_fill_bulk_urb(snd->urb, usb_dev,
-				usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
-				NULL, acm->writesize, acm_write_bulk, snd);
-		snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-		snd->instance = acm;
-	}
-
-	usb_set_intfdata(intf, acm);
-
-	i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
-	if (i < 0)
-		goto alloc_fail7;
-
-	if (cfd) { /* export the country data */
-		acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
-		if (!acm->country_codes)
-			goto skip_countries;
-		acm->country_code_size = cfd->bLength - 4;
-		memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
-							cfd->bLength - 4);
-		acm->country_rel_date = cfd->iCountryCodeRelDate;
-
-		i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
-		if (i < 0) {
-			kfree(acm->country_codes);
-			acm->country_codes = NULL;
-			acm->country_code_size = 0;
-			goto skip_countries;
-		}
-
-		i = device_create_file(&intf->dev,
-						&dev_attr_iCountryCodeRelDate);
-		if (i < 0) {
-			device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
-			kfree(acm->country_codes);
-			acm->country_codes = NULL;
-			acm->country_code_size = 0;
-			goto skip_countries;
-		}
-	}
-
-skip_countries:
-	usb_fill_int_urb(acm->ctrlurb, usb_dev,
-			 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
-			 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
-			 /* works around buggy devices */
-			 epctrl->bInterval ? epctrl->bInterval : 0xff);
-	acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-	acm->ctrlurb->transfer_dma = acm->ctrl_dma;
-
-	dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
-
-	acm_set_control(acm, acm->ctrlout);
-
-	acm->line.dwDTERate = cpu_to_le32(9600);
-	acm->line.bDataBits = 8;
-	acm_set_line(acm, &acm->line);
-
-	usb_driver_claim_interface(&acm_driver, data_interface, acm);
-	usb_set_intfdata(data_interface, acm);
-
-	usb_get_intf(control_interface);
-	tty_register_device(acm_tty_driver, minor, &control_interface->dev);
-
-	return 0;
-alloc_fail7:
-	for (i = 0; i < ACM_NW; i++)
-		usb_free_urb(acm->wb[i].urb);
-alloc_fail6:
-	for (i = 0; i < num_rx_buf; i++)
-		usb_free_urb(acm->read_urbs[i]);
-	acm_read_buffers_free(acm);
-	usb_free_urb(acm->ctrlurb);
-alloc_fail5:
-	acm_write_buffers_free(acm);
-alloc_fail4:
-	usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
-alloc_fail2:
-	acm_release_minor(acm);
-	kfree(acm);
-alloc_fail:
-	return -ENOMEM;
-}
-
-static void stop_data_traffic(struct acm *acm)
-{
-	int i;
-
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
-
-	usb_kill_urb(acm->ctrlurb);
-	for (i = 0; i < ACM_NW; i++)
-		usb_kill_urb(acm->wb[i].urb);
-	for (i = 0; i < acm->rx_buflimit; i++)
-		usb_kill_urb(acm->read_urbs[i]);
-
-	cancel_work_sync(&acm->work);
-}
-
-static void acm_disconnect(struct usb_interface *intf)
-{
-	struct acm *acm = usb_get_intfdata(intf);
-	struct usb_device *usb_dev = interface_to_usbdev(intf);
-	struct tty_struct *tty;
-	int i;
-
-	dev_dbg(&intf->dev, "%s\n", __func__);
-
-	/* sibling interface is already cleaning up */
-	if (!acm)
-		return;
-
-	mutex_lock(&acm->mutex);
-	acm->disconnected = true;
-	if (acm->country_codes) {
-		device_remove_file(&acm->control->dev,
-				&dev_attr_wCountryCodes);
-		device_remove_file(&acm->control->dev,
-				&dev_attr_iCountryCodeRelDate);
-	}
-	device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
-	usb_set_intfdata(acm->control, NULL);
-	usb_set_intfdata(acm->data, NULL);
-	mutex_unlock(&acm->mutex);
-
-	tty = tty_port_tty_get(&acm->port);
-	if (tty) {
-		tty_vhangup(tty);
-		tty_kref_put(tty);
-	}
-
-	stop_data_traffic(acm);
-
-	usb_free_urb(acm->ctrlurb);
-	for (i = 0; i < ACM_NW; i++)
-		usb_free_urb(acm->wb[i].urb);
-	for (i = 0; i < acm->rx_buflimit; i++)
-		usb_free_urb(acm->read_urbs[i]);
-	acm_write_buffers_free(acm);
-	usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
-	acm_read_buffers_free(acm);
-
-	if (!acm->combined_interfaces)
-		usb_driver_release_interface(&acm_driver, intf == acm->control ?
-					acm->data : acm->control);
-
-	tty_port_put(&acm->port);
-}
-
-#ifdef CONFIG_PM
-static int acm_suspend(struct usb_interface *intf, pm_message_t message)
-{
-	struct acm *acm = usb_get_intfdata(intf);
-	int cnt;
-
-	if (PMSG_IS_AUTO(message)) {
-		int b;
-
-		spin_lock_irq(&acm->write_lock);
-		b = acm->transmitting;
-		spin_unlock_irq(&acm->write_lock);
-		if (b)
-			return -EBUSY;
-	}
-
-	spin_lock_irq(&acm->read_lock);
-	spin_lock(&acm->write_lock);
-	cnt = acm->susp_count++;
-	spin_unlock(&acm->write_lock);
-	spin_unlock_irq(&acm->read_lock);
-
-	if (cnt)
-		return 0;
-
-	if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags))
-		stop_data_traffic(acm);
-
-	return 0;
-}
-
-static int acm_resume(struct usb_interface *intf)
-{
-	struct acm *acm = usb_get_intfdata(intf);
-	struct acm_wb *wb;
-	int rv = 0;
-	int cnt;
-
-	spin_lock_irq(&acm->read_lock);
-	acm->susp_count -= 1;
-	cnt = acm->susp_count;
-	spin_unlock_irq(&acm->read_lock);
-
-	if (cnt)
-		return 0;
-
-	if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
-		rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO);
-
-		spin_lock_irq(&acm->write_lock);
-		if (acm->delayed_wb) {
-			wb = acm->delayed_wb;
-			acm->delayed_wb = NULL;
-			spin_unlock_irq(&acm->write_lock);
-			acm_start_wb(acm, wb);
-		} else {
-			spin_unlock_irq(&acm->write_lock);
-		}
-
-		/*
-		 * delayed error checking because we must
-		 * do the write path at all cost
-		 */
-		if (rv < 0)
-			goto err_out;
-
-		rv = acm_submit_read_urbs(acm, GFP_NOIO);
-	}
-
-err_out:
-	return rv;
-}
-
-static int acm_reset_resume(struct usb_interface *intf)
-{
-	struct acm *acm = usb_get_intfdata(intf);
-	struct tty_struct *tty;
-
-	if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
-		tty = tty_port_tty_get(&acm->port);
-		if (tty) {
-			tty_hangup(tty);
-			tty_kref_put(tty);
-		}
-	}
-
-	return acm_resume(intf);
-}
-
-#endif /* CONFIG_PM */
-
-#define NOKIA_PCSUITE_ACM_INFO(x) \
-		USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
-		USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
-		USB_CDC_ACM_PROTO_VENDOR)
-
-#define SAMSUNG_PCSUITE_ACM_INFO(x) \
-		USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
-		USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
-		USB_CDC_ACM_PROTO_VENDOR)
-
-/*
- * USB driver structure.
- */
-
-static const struct usb_device_id acm_ids[] = {
-	/* quirky and broken devices */
-	{ USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
-	.driver_info = SINGLE_RX_URB,
-	},
-	{ USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
-	.driver_info = SINGLE_RX_URB, /* firmware bug */
-	},
-	{ USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
-	.driver_info = SINGLE_RX_URB, /* firmware bug */
-	},
-	{ USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
-	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
-	},
-	{ USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
-	},
-	/* Motorola H24 HSPA module: */
-	{ USB_DEVICE(0x22b8, 0x2d91) }, /* modem                                */
-	{ USB_DEVICE(0x22b8, 0x2d92) }, /* modem           + diagnostics        */
-	{ USB_DEVICE(0x22b8, 0x2d93) }, /* modem + AT port                      */
-	{ USB_DEVICE(0x22b8, 0x2d95) }, /* modem + AT port + diagnostics        */
-	{ USB_DEVICE(0x22b8, 0x2d96) }, /* modem                         + NMEA */
-	{ USB_DEVICE(0x22b8, 0x2d97) }, /* modem           + diagnostics + NMEA */
-	{ USB_DEVICE(0x22b8, 0x2d99) }, /* modem + AT port               + NMEA */
-	{ USB_DEVICE(0x22b8, 0x2d9a) }, /* modem + AT port + diagnostics + NMEA */
-
-	{ USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
-	.driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
-					   data interface instead of
-					   communications interface.
-					   Maybe we should define a new
-					   quirk for this. */
-	},
-	{ USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
-	.driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
-	},
-	{ USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
-	.driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
-	},
-
-	/* Nokia S60 phones expose two ACM channels. The first is
-	 * a modem and is picked up by the standard AT-command
-	 * information below. The second is 'vendor-specific' but
-	 * is treated as a serial device at the S60 end, so we want
-	 * to expose it on Linux too. */
-	{ NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
-	{ NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
-	{ NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i  */
-	{ NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
-	{ NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
-	{ NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic &  */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
-	{ NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB  */
-	{ NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
-	{ NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3  */
-	{ NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
-	{ NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
-	{ NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
-	{ NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */
-	{ NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
-	{ SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
-
-	/* Support for Owen devices */
-	{ USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
-
-	/* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
-
-	/* Support Lego NXT using pbLua firmware */
-	{ USB_DEVICE(0x0694, 0xff00),
-	.driver_info = NOT_A_MODEM,
-	},
-
-	/* Support for Droids MuIn LCD */
-	{ USB_DEVICE(0x04d8, 0x000b),
-	.driver_info = NO_DATA_INTERFACE,
-	},
-
-	/* control interfaces without any protocol set */
-	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
-		USB_CDC_PROTO_NONE) },
-
-	/* control interfaces with various AT-command sets */
-	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
-		USB_CDC_ACM_PROTO_AT_V25TER) },
-	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
-		USB_CDC_ACM_PROTO_AT_PCCA101) },
-	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
-		USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
-	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
-		USB_CDC_ACM_PROTO_AT_GSM) },
-	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
-		USB_CDC_ACM_PROTO_AT_3G) },
-	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
-		USB_CDC_ACM_PROTO_AT_CDMA) },
-
-	{ }
-};
-
-MODULE_DEVICE_TABLE(usb, acm_ids);
-
-static struct usb_driver acm_driver = {
-	.name =		"cdc_acm",
-	.probe =	acm_probe,
-	.disconnect =	acm_disconnect,
-#ifdef CONFIG_PM
-	.suspend =	acm_suspend,
-	.resume =	acm_resume,
-	.reset_resume =	acm_reset_resume,
-#endif
-	.id_table =	acm_ids,
-#ifdef CONFIG_PM
-	.supports_autosuspend = 1,
-#endif
-};
-
-/*
- * TTY driver structures.
- */
-
-static const struct tty_operations acm_ops = {
-	.install =		acm_tty_install,
-	.open =			acm_tty_open,
-	.close =		acm_tty_close,
-	.cleanup =		acm_tty_cleanup,
-	.hangup =		acm_tty_hangup,
-	.write =		acm_tty_write,
-	.write_room =		acm_tty_write_room,
-	.ioctl =		acm_tty_ioctl,
-	.throttle =		acm_tty_throttle,
-	.unthrottle =		acm_tty_unthrottle,
-	.chars_in_buffer =	acm_tty_chars_in_buffer,
-	.break_ctl =		acm_tty_break_ctl,
-	.set_termios =		acm_tty_set_termios,
-	.tiocmget =		acm_tty_tiocmget,
-	.tiocmset =		acm_tty_tiocmset,
-};
-
-/*
- * Init / exit.
- */
-
-static int __init acm_init(void)
-{
-	int retval;
-	acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
-	if (!acm_tty_driver)
-		return -ENOMEM;
-	acm_tty_driver->driver_name = "acm",
-	acm_tty_driver->name = "ttyACM",
-	acm_tty_driver->major = ACM_TTY_MAJOR,
-	acm_tty_driver->minor_start = 0,
-	acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
-	acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
-	acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
-	acm_tty_driver->init_termios = tty_std_termios;
-	acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
-								HUPCL | CLOCAL;
-	tty_set_operations(acm_tty_driver, &acm_ops);
-
-	retval = tty_register_driver(acm_tty_driver);
-	if (retval) {
-		put_tty_driver(acm_tty_driver);
-		return retval;
-	}
-
-	retval = usb_register(&acm_driver);
-	if (retval) {
-		tty_unregister_driver(acm_tty_driver);
-		put_tty_driver(acm_tty_driver);
-		return retval;
-	}
-
-	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
-
-	return 0;
-}
-
-static void __exit acm_exit(void)
-{
-	usb_deregister(&acm_driver);
-	tty_unregister_driver(acm_tty_driver);
-	put_tty_driver(acm_tty_driver);
-}
-
-module_init(acm_init);
-module_exit(acm_exit);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);