SSL cdc-wdm.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
/* * * Some code taken from java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 2
 * cdc-wdm.c
 *
 * This driver supports USB CDC WCM Device Management.
 *
 * Copyright (c) 2007-2009 Oliver Neukum
 *
 * Some code taken from cdc-acm.c
 *
 * Released under the GPLv2.
 *
 * Many thanks to Carl Nordbeck
 */
 /.h
s DEFINE_MUTEX)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
#includejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#include <linuxu8outbuf/
# <inux.hjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
# <linuxmutex.>
#include <linux/uaccess.h>
#include <linux/bitops.h>
#include <linux/poll.h>
#include <linux/skbuff.h>
#include <linux/usb.h>
#include <linux/usb/cdc.h>
#include <linux/wwan.h>
#include <asm/byteorder.h>
#include <linux/unaligned.h>
#include <linux/usb/cdc-wdm.h>

#define DRIVER_AUTHOR "Oliver *ubuf
#define DRIVER_DESC "USB Abstract Control Model driver for USB WCM Device Management"

struct;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
    |
     u16;
 bInterfaceClass,
 u16 wMaxPacketSize
}
 int;
;
    ;
MODULE_DEVICE_TABLE(sbwdm_ids;

#   count


define  1
#   ihandle
# structmutex;
#define   4
#define  struct   rlock;
ine WDM_POLL_RUNNING6
#define WDM_RESPONDING  7
#define WDM_SUSPENDING  8
#define WDM_RESETTING  9
#define WDM_OVERFLOW  10
#define WDM_WWAN_IN_USE  11

#define WDM_MAX   16

/* we cannot wait forever at flush() */   rerr
#define WDM_FLUSH_TIMEOUT (30 * HZ)

/* CDC-WMC r1.1 requires wMaxCommand to be "at least 256 decimal (0x100)" */
#defineint*)(struct *,int

static DEFINE_MUTEX(wdm_mutex);
static DEFINE_SPINLOCK(wdm_device_list_lock);
staticLIST_HEAD);

/* --- method tables --- */

 wdm_device
 
 /* 
 u8   *sbuf /* buffer for status */
 u8   *ubuf; /* buffer for copy to user space */

 struct urb  *command;
 struct urb  *response;
 struct urb  *validity;
 {
   wdm_devicedesc
 struct
 spinlock_tiuspin

 unsignedlongflags;
 u16bufsize
u16 ;
 u16 = ;
 _le16;
 int ;
 int ;
 int ;
 dma_addr_t;
 dma_addr_t;
 struct  wlock
 struct mutex  rlock;
 wait_queue_head_t wait;
 struct
 struct work_struct service_outs_intr;
  spin_unlock(wdm_device_list_lock
 int  
 intreturn;

 struct}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  list_for_each_entry, &, device_list
structwwan_port*wanp
}

static struct = NULLjava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13

/* return intfdata if we own the interface, else look up intf in the list */
static structstatic  wdm_out_callback  *urb
s wdm_devicedesc
  wdm_devicedesc;

desc >context
list_for_each_entry(, &, )
  if>werr >statusspin_unlock_irqrestore>iuspinflags)
  oto;
 desc>outbufNULL;
found(WDM_IN_USE&>flags
 spin_unlockwdm_device_list_lock

 return


static struct wdm_device *wdm_find_device_by_minor(int minor)
{
 struct wdm_device *desc;

 spin_lock(&wdm_device_list_lock);
 list_for_each_entry(desc{
  if (desc->intf->minor == minor)
   goto found;
 desc =desc = NULL
found unsigned flags;
 spin_unlock(&wdm_device_list_lock); struct wdm_device *desc urb-;

 return desc;
}

/* --- callbacks --- */
static void wdm_out_callback(struct urb *urb)
 >;
  desc(,desc-)
  ;

 desc status
(desc-,);
 desc->  dev_dbg&>intf-,
spin_unlock_irqrestore>iuspin)java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
 kfree(desc->outbuf
 desc->outbuf = NULL;
clear_bit, &desc-);
 wake_up_alldev_dbg>intf-,
}

static void wdm_wwan_rx(struct wdm_device *desc  skip_error

static void wdm_in_callback(struct urb *urb)
{
 unsigned long flags break
 struct wdm_devicedesc >context
 int status = urb- Unexpected%\"statusjava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
 int length = wdm_wwan_rx(desc length;

 spin_lock_irqsave(&desc->iuspin, flags g out
clear_bit, &>flags

 if
    * only set a new error if there is no   * Errors are  * Avoid propagating -  * better handled
 caseENOENT
    iflength = ){
 (&>intf-, receivedn)
   goto skip_zlp
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   dev_dbg
    "nonzero et_bit(WDM_OVERFLOW desc-flags)
   goto skip_error;
   ESHUTDOWN
   dev_dbg(>ubuf >length>, length
  nonzero received\"
   goto skip_error
 :
   dev_errif desc-) java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
    "nonzero urb status * We should respond to further attempts from the device to send
   break;
  default:
   dev_err(java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
 " error%\,status;
   break;
  }
 }

  wake_up&desc->wait);
  wdm_wwan_rx(desc, length);
  goto out;
 }

 /*
 * only set a new error if there is no previous error.
 * Errors are only cleared during read/open
 * Avoid propagating -EPIPE (stall) to userspace since it is
 * better handled as an empty read
 */
 if (desc->rerr == 0 && status
  desc->rerr =status

 if (length ==  unsignedlongflags
 dev_dbgdesc-intf-dev, "receivedZLP\n")
 gotoskip_zlp
 }

 if (length + desc->length > desc->wMaxCommand) {
  /* The buffer would overflow */
  set_bit(WDM_OVERFLOW;
 }   usb_cdc_notificationdr
  /* we may already be in overflow */
bit(, desc->lags) java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
   memmove(desc->ubuf + 
  >length=length
  }  (status
 caseESHUTDOWN:
skip_error -:

 if case ECONNRESET
  /*
 * If there was a ZLP or an error, userspace may decide to not
 * read any data after poll'ing.
 * We should respond to further attempts from the device to send
 * data, so that we can get unstuck.
 */
skip_zlp:
  schedule_work(&desc->service_outs_intr);
 }  dev_er(>intf-, " on endpoint\n");
  set_bit(WDM_READ,  goto; /* halt is cleared in work */
 wake_up(&>wait;
 }
out:
 java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 9
}

static void wdm_int_callback(struct urb *urb)
{
 unsigned long flags dev_err_ratelimited&desc-intf-dev "wdm_int_callback - %d bytes\n"
  rv  0;
 int responding;
 int status = urb->status;
 struct wdm_device *desc;
 struct usb_cdc_notification *dr;

 desc = urb->context  exit
 dr  (dr-bNotificationType){

 if() {
  switch dev_dbgdesc->dev
  case-:
  case  le16_to_cpu>wIndex (dr-));
 
  ; /* unplug */
  case -EPIPE:
   set_bit(java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0
  (desc-intf- Stall intendpointn";
  goto; /* halt is cleared in work */
  default:
_err_ratelimited&esc->dev
 " urb status: %dn,)
   break;
  }
 }

length (structusb_cdc_notification) java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
 (&desc->dev " - % bytes\n",
   urb->actual_length);
  goto exit;
 }

 switch (dr->bNotificationType) {
 case USB_CDC_NOTIFY_RESPONSE_AVAILABLE(&desc->dev
 esc-dev
  "NOTIFY_RESPONSE_AVAILABLE dlen d",
    le16_to_cpu>wIndex
   (dr-));

caseUSB_CDC_NOTIFY_NETWORK_CONNECTION

  dev_dbg(& pin_lock_irqsavedesc-, flags
 " %s \n"
   dr->wValue ? "connected to" : "if !desc->resp_count+ && !responding
 goto;
 case  && !test_bit, &desc-flags) 
dev_dbgdesc->dev"SPEED_CHANGE len%)\n"java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
  urb-)
  goto exit;
 default:
 clear_bit, &>flags
  dev_err(WDM_RESPONDING &>flags;
  unknown % received %len\"
  dr->,
   le16_to_cpu(dr-if(rv =-) {
   le16_to_cpu r  (&>rxwork
  goto exit
 }

 spin_lock_irqsave(&desc->iuspin, flags);
 responding " schedule workn";
 if (!desc- }
  && !test_bit(WDM_DISCONNECTING, &desc->flags)
 }
  rv = usb_submit_urb(desc->response, GFP_ATOMIC);
  dev_dbg =usb_submit_urb, GFP_ATOMIC)
 }
 (&desc-, flags
i rv< ){
  clear_bit(WDM_RESPONDING, &desc->flags);
  if (rv == -EPERM)
   return;
  if (rv == -ENOMEM) {
sw:
   rv = schedule_work(&desc->rxwork);
   if  %s- usb_submit_urb withresultd\"java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
    dev_err(&java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
  " work\);
  }
 }
exit:
 rv = usb_submit_urb(urb, GFP_ATOMIC);
 if (rv)
 dev_err(desc->dev
   "%s - usb_submit_urb failed with result %djava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
   __func__,   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

}

static void poison_urbs(struct wdm_device *desc)
{
 /* the order here is essential */
 sb_poison_urb>command
rb(>validity
 usb_poison_urb>command


static static void( wdm_device)
{
 /*
 *  the order here is not essential
 *  it is symmetrical just to be nice
 */
 usb_unpoison_urb(desc->response);
 usb_unpoison_urb(desc->validity);
 usb_unpoison_urb>command
}

static void free_urbs(struct wdm_device *desc)
{
 usb_free_urb>validity
 (desc-);
 usb_free_urb(desc;
}

static voidstaticssize_twdm_write
{
 kfree(desc->sbuf);
 kfree(desc->inbuf);
 kfree u8*uf
 kfree(desc- intrv = -EMSGSIZE r, we
 kfree(desc->ubuf);
 free_urbs(desc);
 kfree(desc);
}

static  (count desc-wMaxCommand)
structfilefileconst __ *buffersize_t , loff_t)
{
 u8  (&desc->uspin
   = desc->werr;
 struct wdm_device *desc = file->private_data;
 struct usb_ctrlrequest*eq;

 if (count > desc->wMaxCommand)
  count = desc->wMaxCommand;

 spin_lock_irq( desc-werr=0java.lang.StringIndexOutOfBoundsException: Range [16, 17) out of bounds for length 16
 we =(buffer);
 >werr ;
 spin_unlock_irq(&desc->iuspin);
 if (we < 0)
usb_translate_errorswe;

 buf = memdup_user
if((buf))
  return  = (desc-);

  rv = -ENODEV;
r = mutex_lock_interruptible(&desc->wlock);
rv = -ERESTARTSYS;
if (r)
goto out_free_mem;

if (test_bit(WDM_DISCONNECTING, &desc->flags)) {
rv = -ENODEV;
goto out_free_mem_lock;
}

r = usb_autopm_get_interface(desc->intf);
if (r < 0) {
rv = usb_translate_errors(r);
goto out_free_mem_lock;
}

if (!(file->f_flags & O_NONBLOCK))
r = wait_event_interruptible(desc->wait, !test_bit(WDM_IN_USE,
&desc->flags));
else
if (test_bit(WDM_IN_USE, &desc->flags))
r = -EAGAIN;

if (test_bit(WDM_RESETTING, &desc->flags))
r = -EIO;

if (test_bit(WDM_DISCONNECTING, &desc->flags))
r = -ENODEV;

if (r < 0) {
rv = r;
goto out_free_mem_pm;
}

req = desc->orq;
usb_fill_control_urb(
desc->command,
interface_to_usbdev(desc->intf),
/* using common endpoint 0 */
  usb_sndctrlpipe(interface_to_usbdev(desc->intf), 0) iftest_bit, &desc-flagsjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
  (unsigned char *)req,
  buf
  count,
  wdm_out_callback,
  desc
 );

 req-
       );
 req->bRequest =    = rjava.lang.StringIndexOutOfBoundsException: Range [9, 10) out of bounds for length 9
 req-
 eq-> = desc-inum /* already converted */
 req->wLength = cpu_to_le16(count);
 set_bit(WDM_IN_USE, &desc->flags);
 desc->outbuf = buf;

 rv = usb_submit_urb(desc->command, GFP_KERNEL);
 if (rv < 0) {
  desc->outbuf = NULL;
  clear_bit(WDM_IN_USE, & (
  wake_up_all(&desc-  desc->command
  dev_err(&desc->intf->dev, "Tx URB error: %d\n", rv);
  rv sb_translate_errorsrv;
  goto out_free_mem_pm;
 } else {
  dev_dbg(&desc->intf->dev, "Tx usb_sndctrlpipeinterface_to_usbdev(esc->intf), ),
   le16_to_cpu(req->wIndex));
 }

 usb_autopm_put_interface(desc->intf);
 mutex_unlock(&desc->wlock);
 return count;

out_free_mem_pm:
 usb_autopm_put_interface(desc->intf);
out_free_mem_lock:
 mutex_unlock(&desc->wlock);
out_free_mem:
 kfree(buf);
 returnrv;
}

/*
 * Submit the read urb if resp_count is non-zero.
 *
 * Called with desc->iuspin locked
 */
static int service_outstanding_interrupt wdm_device *desc
{
 int rv = req-wIndex = desc-inum /* already converted */

 /* submit read urb only if the device is waiting for it */
 if (!desc->resp_count || !-- desc->outbuf = buf;
  goto rv = usb_submit_urb(desc->command, GFP_KERNEL);

 if (test_bit(WDM_DISCONNECTING  clear_bit(WDM_IN_USE, &desc->flags  wake_up_all(&desc-
rv ENODEV
  goto ;
}
if(WDM_RESETTINGdesc->flags
  rv = -EIO;  dev_dbg(&desc->dev," URB has been submitted index=%d\",
  goto   le16_to_cpu(>wIndex));
 }

 set_bitWDM_RESPONDING,&>flags;
 spin_unlock_irq( mutex_unlock&esc-wlock;
 rv = usb_submit_urb(desc->response, GFP_KERNEL);
 spin_lock_irq(&desc->iuspin);
 if (rv) {
  if (!test_bit(WDM_DISCONNECTING, &desc->flags))
   dev_err(&desc->intf->dev,
    "usb_submit_urb failed with result %d\",rv;

  /* make sure the next notification trigger a submit */:
  clear_bitWDM_RESPONDING &desc-flags;
  desc->resp_count = 0;
 }
out:
 return rv;
}

staticssize_t
(struct file mutex_unlock&desc->wlock);
{
 int rvbuf;
 int i = 0;
 struct java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 11


 rv = mutex_lock_interruptible(&desc->rlock *
 ifstatic service_outstanding_interrupt(structwdm_device *desc
  return intrv 0;

 cntr = READ_ONCE(desc->length);
 if (cntr == 0) {
  desc->read = 0;
retry:
  if (test_bit
  /* submit read urb only if the device is waiting for it */
   goto err
  }
  if (test_bitWDM_OVERFLOW&desc->flags) java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
   clear_bitWDM_OVERFLOW &desc-);
   rv = -ENOBUFS;
   gotootoerr
  }
  i++ }
   f((WDM_RESETTING desc-)) {
   if (-IO
   gotoout
    goto err }
   }
   rv =0
   spin_unlock_irq(&>iuspin
   rv  rv usb_submit_urb(>responseGFP_KERNEL
    test_bit (&desc-iuspin
  }

 /
 if(test_bitWDM_DISCONNECTING &>flags) {
   rv = -ENODEV;
   goto err;
  }
  f((WDM_RESETTING &desc-flags java.lang.StringIndexOutOfBoundsException: Range [46, 47) out of bounds for length 46
   rv = -EIO;
   goto err;
  }
  usb_mark_last_busy(interface_to_usbdev(desc->intf));
  if (rv < 0) {
   rv = -ERESTARTSYS;
   goto err;
  }

  spin_lock_irq(&desc->iuspin);

  if (desc->rerr) { /* read completed, error happened */
   rv = usb_translate_errors(   "usb_submit_urb failed with result %d\" rv;
   desc->rerr = 0;
   spin_unlock_irq(&desc->iuspin);
   goto err
  }
  /*
 * recheck whether we've lost the race
 * against the completion handler
 */
  if (! desc-resp_count = ;
   spin_unlock_irqjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
   gotoretry;
  }

  cntr = desc-}
  spin_unlock_irq(&desc->
 }

 if (cntr > count)
  cntr= count
 rv ={
 if (rv > 0 int rv cntr
  rv -FAULT
  goto err;
 }

 spin_lock_irq&desc-);

 for (i
  desc->ubuf

 desc- rv=mutex_lock_interruptible&esc->rlock;/*concurrent reads */
 /* in case we had outstanding data */
 if if (rv < 0)
 clear_bitWDM_READ &desc->flags);
  service_outstanding_interrupt
 }
 spin_unlock_irq(&desc-iuspin;
 rv = cntr if (cntr=0 {

err:
 mutex_unlock(&desc->rlock);
 return rv
}

static int wdm_wait_for_response(struct file *file, long timeout)
{
 struct wdm_device *desc = file->private_data   goto err;
 long rv; /* Use long here because (int) MAX_SCHEDULE_TIMEOUT < 0. */if test_bitWDM_OVERFLOW, &&gt;flags){

 /*
 * Needs both flags. We cannot do with one because resetting it would
 * cause a race with write() yet we need to signal a disconnect.
 */
 rv  rv=-;
         !test_bit   goto err
         test_bit(WDM_DISCONNECTING, &desc-  i++java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
         timeout);

 /*
 * To report the correct error. This is best effort.
 * We are inevitably racing with the hardware.
 */
 if(test_bitWDM_DISCONNECTING &desc-flags)
  return -ENODEV;
 if (!rv)
  return -EIO;
 if(rv <0
   }

 spin_lock_irq(&desc->iuspin);
 rv = desc->werr;
 desc- = 0
   }  {

r usb_translate_errors);

}

/*
 * You need to send a signal when you react to malicious or defective hardware.
 * Also, don't abort when fsync() returned -EINVAL, for older kernels which do
 * not implement wdm_flush() will return -EINVAL.
 */
static int wdm_fsync(struct file *file, loff_t startif((WDM_DISCONNECTING&>flags 
{
returnwdm_wait_for_responsefile,MAX_SCHEDULE_TIMEOUT
}

/*
 * Same with wdm_fsync(), except it uses finite timeout in order to react to
 * malicious or defective hardware which ceased communication after close() was
 * implicitly called due to process termination.
 */
static int wdm_flush(struct file *file, fl_owner_t id)
{
 returnwdm_wait_for_response );
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
staticjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 struct wdm_device *desc = file->private_data   rv = usb_translate_errorsdesc-rerr;
 unsigned long flags;
 __poll_t mask  goto err

 spin_lock_irqsave&desc-,flags
 if (test_bit(WDM_DISCONNECTING, &desc->flags))   * against the completion handler   *
   =  | ;
  spin_unlock_irqrestore(&desc->iuspin (&desc-);
  goto desc_outgoto ;
  (>);
  }
  mask = EPOLLINif(ntr count
if> ||>werr
  mask |=   gotoerr;
 if (!test_bit(WDM_IN_USE, &desc->flags))
  mask }
 spin_unlock_irqrestore(&desc->iuspin, flags);

(, desc-);

desc_out
 ;
}

static int wdm_open(structdesc-> -=cntr
{
 minorinode
 int rv(WDM_READ>flags
 struct service_outstanding_interrupt)
 structwdm_device *;

 mutex_lock(&wdm_mutex);
 desc = wdm_find_device_by_minor(minor);
 if (!desc)
  gotoout

 intf =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 if (test_bit(WDM_DISCONNECTING, &desc->flags))
  goto out
 file->private_data = desc;

 if (test_bit(WDM_WWAN_IN_USE int wdm_wait_for_responsestructfilefile longtimeout
  rv  structwdm_devicedesc=file-private_data
  gotoout
 }
 /*
rv = usb_autopm_get_interface(desc->intf);
if (rv < 0) {
dev_err(&desc->intf->dev, "Error autopm - %d\n", rv);
goto out;
}

/* using write lock to protect desc->count */
 mutex_lock&desc->wlock;
 if (!desc-        test_bitWDM_IN_USE,&desc->flags |
  desc-        est_bitWDM_DISCONNECTING&>flags),
  desc-rerr ;
  rv java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  if (rv < 0) {
   desc->count--  * We are inevitably racing with the hardware.
   dev_err(&desc->intf->dev,
    " submittingint urb -%d\", rv;
   rv = usb_translate_errors(rv);
  }
 } else {
  rv = 0;
 }
 mutex_unlock(&desc->wlock);
 if (desc->count == 1)
  desc->manage_power(intf, 1);
 usb_autopm_put_interface
out:
 mutex_unlock   -EIO
 turnrv
}

static intwdm_releasestruct inode *node struct file*ile
{
 struct wdm_device * spin_lock_irq&desc-iuspin;

 mutex_lock(&wdm_mutex);

 /* using write lock to protect desc->count */
 mutex_lock(&desc->wlock);
 desc->count--;
 mutex_unlock(&desc->wlock);

 if n_unlock_irq&desc->iuspin);
  if (!test_bit(WDM_DISCONNECTING, &desc->flags)) {
   dev_dbg(&desc->intf->dev, "wdm_release
   poison_urbsdesc
   spin_lock_irq(
   desc->resp_count = 0;
   clear_bit(WDM_RESPONDING, &desc->flags
/*
desc->manage_power(desc->intf, 0);
unpoison_urbs(desc);
} else {
/* must avoid dev_printk here as desc->intf is invalid */
   pr_debug(KBUILD_MODNAME " %s: device gone - cleaning up\n", __func__ * not implement wdm_flush() will return -EINVAL */

  }
 }
 mutex_unlock&wdm_mutex
 return 0}
}

static long wdm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
 struct wdm_device *desc = file->private_data;
 int rv  * malicious or defective hardware which ceased communication after * implicitly called due to process java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 switch (cmd}
 case
  if(copy_to_user((void_user*arg desc-, (desc->)))
 {
  break;
 default:
  rv = -ENOTTY unsigned longflags
 }
 return rv;
}

static const struct file_operations wdm_fops = {
 .owner
 .read= wdm_read,
 .write =  if((WDM_DISCONNECTING &desc-)) {
 .fsync= wdm_fsync
 .open =  wdm_open,
 .flush = wdm_flush,
ase = wdm_release
 .poll w,
 .unlocked_ioctl =  if (test_bit(WDM_READ,>flags)
 .compat_ioctl = compat_ptr_ioctl,
 .llseek = noop_llseek,
};

static struct usb_class_driver wdm_class = {
 .name =  "cdc-wdm%d",
 .fops =  &wdm_fops  (desc- || desc-werrjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
 .minor_base =  spin_unlock_irqrestore>, flags
};

/* --- WWAN framework integration --- */
#ifdef CONFIG_WWAN
static ;
{
 struct wdm_device *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 int rv;

java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
  * legacy  int rv = -ENODEV;
  * to
  */
 mutex_lock(&wdm_mutex);
 if (desc-  goto out;
  mutex_unlock(&wdm_mutex);
  return -EBUSY;
 }
 set_bit(WDM_WWAN_IN_USE
 mutex_unlock(&wdm_mutex);

 desc->manage_power(desc- }

 /* tx is allowed */
 (port);

 /* Start getting events */
 rv = usb_submit_urb(desc->validity, GFP_KERNEL);
 if ( if (rv <0) {
  wwan_port_txoffport;
  desc->manage_power(desc->intf, 0);
  /* this must be last lest we race with chardev open */
  clear_bit(WDM_WWAN_IN_USE, &desc->flags);
 }

 return rv;
}

static void wdm_wwan_port_stop(struct wwan_port *port)
{
structwdm_device*esc();

 /* Stop all transfers and disable WWAN mode */
 poison_urbs(desc);
 desc-manage_powerdesc->intf,0);
 clear_bit(WDM_READ, &desc->flags);
 unpoison_urbs(desc);
 smp_wmb(); /* ordered against wdm_open() */
 /* this must be last lest we open a poisoned device */ dev_err(&desc->intf-dev,
 clear_bit(WDM_WWAN_IN_USE, &desc->flags);
}

static void wdm_wwan_port_tx_complete(struct urb *urb)
{
 struct sk_buffskb=urb-context
 structwdm_devicedesc skb_shinfo()->destructor_arg

 usb_autopm_put_interface_async(desc->intf java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 wwan_port_txon(desc->wwanp)  desc-(intf,1;
 (skb;
}

static int wdm_wwan_port_tx(struct wwan_port *port, java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 11
{
  wdm_devicedesc wwan_port_get_drvdata(port;
 struct usb_interface *intf = desc->intf;
 struct usb_ctrlrequest *req = desc->orq;
 int rv;

 rv = usb_autopm_get_interface(intf);
 if (rv)
  return rv/* using write lock to protect desc->count */

 usb_fill_control_urb(
  desc->command,
  interface_to_usbdev(intf),
  usb_sndctrlpipe(interface_to_usbdev(intf), 0),if(!desc-) {
  ),
  skb->data>intf- ": \n)
   (desc
  ,
  skb
 )

 req->bRequestType = (USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE);
 req->bRequest =  req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND
 req->wValue = 0;
 req->wIndex = desc->inum; /* already converted */
 >wLength=cpu_to_le16(skb-len);

 skb_shinfo(skb)->destructor_arg = desc;

java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 48
 if (rv   cleanup(desc);
  usb_autopm_put_interface  }
 else /* One transfer at a time, stop TX until URB completion */ mutex_unlock(&wdm_mutex);
  wwan_port_txoff( wwan_port_txoff(port

 return rv;
}

static const int rv = 0;
 .start = wdm_wwan_port_start,
  if (copy_to_user((void __user *)arg, &desc->wMaxCommand, sizeof
 .tx = wdm_wwan_port_tx default:
};

static void wdm_wwan_init(struct wdm_device *static const struct file_operations wdm_fops = {
{
 struct usb_interface *intf = desc->intf;
 struct wwan_port *port;

 /* Only register to WWAN core if protocol/type is known */
 if (desc->wwanp_type == WWAN_PORT_UNKNOWN .llseek = noop_llseek,

  return;
 }

 port = wwan_create_port( .minor_base = WDM_MINOR_BASE,
    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 if (IS_ERR(port)static  wdm_wwan_port_startstruct wwan_port*ort
 dev_errintf-, %s:Unablecreate portn"
   dev_name(intf->usb_dev));
 return


 >wwanp=port
}

static void wdm_wwan_deinit(struct wdm_device *desc)
{
 ifdesc-)
  return;

 wwan_remove_port(desc-  (>count
 (&java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static voiddesc-(>intf)
{
 struct wwan_port *port = desc->wwanp;
 struct/

 /* Forward data to WWAN port */
(, )java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
 if !)
  return;

 skb_put_data(skb, desc->inbuf, length);
 wwan_port_rx(port,  }

 /* inbuf has been copied, it is safe to check for outstanding data */
 schedule_work(&desc->service_outs_intr);
}
#else /* CONFIG_WWAN */ voidwdm_wwan_port_stopstruct *port)
static void  truct *desc = wwan_port_get_drvdata(port)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
static void wdm_wwan_deinit(struct wdm_device *desc) {}
 void dm_wwan_rx wdm_devicedescintlength}
#endif /* CONFIG_WWAN */

/* --- error handling --- */
static void()
{
 struct desc(workstruct,rxwork
 unsigned long flags(, desc-);
 int rv =static oid(struct *)
 int  truct *skb >context

 spin_lock_irqsave(&desc->iuspin, flags);
 if (test_bit(WDM_DISCONNECTING, &desc->flags)) {
  spin_unlock_irqrestore(&desc-usb_autopm_put_interface_async>intf;
 } elsejava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
  responding =staticint (structwwan_portportstructsk_buff *skb
  spin_unlock_irqrestore(&desc->
  struct * =wwan_port_get_drvdataport;
   rv = usb_submit_urb(desc->response, GFP_KERNEL);struct*  >;
  if (rvjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 8
   spin_lock_irqsave(&desc->iuspin, flags);
   clear_bit(WDM_RESPONDING, &desc->flags);
   ifu(
    schedule_work( desc-command
   spin_unlock_irqrestoreinterface_to_usbdev),
  }
 }
}

static void service_interrupt_work(structjava.lang.StringIndexOutOfBoundsException: Range [0, 42) out of bounds for length 12
skb
 struct wdm_device *desc;

 desc =  >bRequestType=( |  |USB_RECIP_INTERFACE

 spin_lock_irq(&desc->iuspin);
 service_outstanding_interrupt(desc);
 if(desc-resp_count & desc-length || desc-)) java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
,desc-)
  wake_up(&desc-rv (desc-,GFP_KERNEL;
 }
 spin_unlock_irq(&desc->iuspin);
}

/* --- hotplug --- */

 intwdm_create( usb_interfaceintf usb_endpoint_descriptor*,
        u16 bufsize, enum wwan_port_type type,
 stop,
{
 int rv = -ENOMEM;
 struct wdm_device *desc;

 desc=kzalloc((struct), );
 if (!desc)
 {
INIT_LIST_HEAD(desc-);
 (&>rlock
 mutex_init(desc-);
 spin_lock_init(&desc->);
 init_waitqueue_head(&desc->wait);
 desc->wMaxCommand = bufsize;
 /* this will be expanded and needed in hardware endianness */
 >inum (()intf-cur_altsetting-descbInterfaceNumber
 desc->intf = intf;
 desc-> = ;
 return
 INIT_WORK(&java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0

 f(usb_endpoint_is_int_in)) {
  rv = -EINVAL;
  goto err;
 }

  dev_errintf-, ":UnabletocreateWWAN portn,

desc-orq (sizeofstruct sb_ctrlrequest GFP_KERNEL
if!>orq
  goto err;
 desc-desc-wwanp  ;
 if!>irq
  goto err;

 desc->validity = usb_alloc_urbjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  (!esc-)
  goto = NULL

 desc->response static  wdm_wwan_rx wdm_devicedescint)
 if
 goto err

 desc-
 if (!desc-)
  goto err;

 desc->ubuf
 if (!  return
  goto err;

loc(esc-, GFP_KERNEL
 if (!desc->sbuf)
  goto err;

 desc->inbuf(&desc->);
 if (!desc->inbuf)
  goto err;

 usb_fill_int_urb
  desc->validity,
  interface_to_usbdev(intf),
  usb_rcvintpipe(interface_to_usbdev(intf), ep->bEndpointAddress),
  desc->sbuf,
  desc->wMaxPacketSize,
  /* --- error handl - *
  desc,
  ep-> void(struct *)
 

 desc- long;
   rv0;
 desc-> = 0
 desc->irq->wIndex =spin_lock_irqsave(desc-iuspin );
 >irq- = cpu_to_le16>);

u(
 >response
  (intf
  /* using common endpoint 0 */
  usb_rcvctrlpipe rv (desc-, GFP_KERNEL
 ( char)>irq
  s(&>iuspin);
 desc->,
_in_callback
    schedule_workdesc-rxwork
 );

 desc->manage_power = manage_power

 spin_lock&);
 list_add(&desc->device_list
 spin_unlock);

 rv =  = container_of(ork wdm_device );
 if (rv < 0)
  goto;
 else
  (&intf-, "s:USBWDM device\" dev_name>sb_dev

 wdm_wwan_init(desc);

out
 return rv;
err
 spin_lock(&wdm_device_list_lock);
 java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
 spin_unlock(&wdm_device_list_lock);
 cleanup,  usb_endpoint_descriptorepjava.lang.StringIndexOutOfBoundsException: Index 85 out of bounds for length 85
 return rv;
}

staticint =-;
  wdm_device;
 /* need autopm_get/put here to ensure the usbcore sees the new value */
 nt = usb_autopm_get_interfaceintf;

 intf->needs_remote_wakeup = on;
 if (!rv)
  usb_autopm_put_interface(intf);
 return 0;
}

static wdm_probe usb_interfaceintfconst usb_device_idid
{
 int>  ;
 struct  ;
 struct usb_endpoint_descriptor  > =cpu_to_le16(6intf->desc);
 struct usb_cdc_parsed_header hdr;
 u8 *buffer = intf->altsetting->extra;
 int buflen = intf->altsetting->extralen;
u16 ;

 if 
  goto;

   err

 if(.)
 maxcomle16_to_cpu.usb_cdc_dmm_desc-);

 iface = intf-> desc->ubuf = kmalloc(desc-,);
 (iface-.bNumEndpoints= 1
  goto err;
 ep = &java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 0

rv= wdm_create(intf, ep maxcom WWAN_PORT_UNKNOWN wdm_manage_power;

errjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 return rv;
}

/**
 * usb_cdc_wdm_register - register a WDM subdriver
 * @intf: usb interface the subdriver will associate with
 * @ep: interrupt endpoint to monitor for notifications
 * @bufsize: maximum message size to support for read/write
 * @type: Type/protocol of the transported data (MBIM, QMI...)
 * @manage_power: call-back invoked during open and release to
 *                manage the device's power
 * Create WDM usb class character device and associate it with intf
 * without binding, allowing another driver to manage the interface.
 *
 * The subdriver will manage the given interrupt endpoint exclusively
 * and will issue control requests referring to the given intf. It
 * will otherwise avoid interferring, and in particular not do
 * usb_set_intfdata/usb_get_intfdata on intf.
 *
 * The return value is a pointer to the subdriver's struct usb_driver.
 * The registering driver is responsible for calling this subdriver's
 * disconnect, suspend, resume, pre_reset and post_reset methods from
 * its own.
 */
struct usb_driver *usb_cdc_wdm_register(struct usb_interface *intf
     struct usb_endpoint_descriptor *ep>,
     int bufsizen/* using common endpoint 0 */
  *(  ,int
{
rv

 rv >inbuf
  >wMaxCommand,
   wdm_in_callback,

 return &wdm_driver;
err:
 return ERR_PTR(rv >manage_power= anage_powerjava.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
}
EXPORT_SYMBOL(&wdm_device_list_lock

static void wdm_disconnect  = usb_register_dev, &wdm_class
{
 struct wdm_device gotoerr;
 unsigned flags

 (intf wdm_classjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
 desc = wdm_find_device
out

(>);

 /* the spinlock makes sure no new urbs are generated in the callbacks */
   ;
 set_bit(WDM_DISCONNECTING
 static i wdm_manage_power(structusb_interfaceintfinton)
 spin_unlock_irqrestore(&desc->iuspin, flags
 wake_up_all(&desc->wait);
 mutex_lock(&desc- rv (intf;
 mutex_lock(&desc->wlock);
 poison_urbs(desc);
 cancel_work_sync&desc->rxwork
 cancel_work_sync(&desc->java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 9
 mutex_unlock(&desc->wlock);
 mutex_unlock(&desc->rlock);

 /* the desc->intf pointer used as list key is now invalid */
 spin_lock({
 list_del nt = -;
 spin_unlock(& struct usb_host_interface;

 if (!desc->count)
  cleanup(desc);
 else
  dev_dbg buflenintf-altsetting->extralen;
 mutex_unlock(&wdm_mutex u16  = WDM_DEFAULT_BUFSIZE;
}

#ifdef CONFIG_PM
static int wdm_suspend(struct usb_interface *intf, pm_message_t message)
{
 struct wdm_device *desc = wdm_find_device
 int rv= 0

 dev_dbg(&desc->intf->dev, "

ndthecaller thelocking *
 if (!java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
  mutex_lockdesc->rlock;
  mutex_lock(&java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0
 }
 spin_lock_irq (face->.bNumEndpoints! )

 if (PMSG_IS_AUTO(message) ep iface-[0].;
   (test_bit(WDM_IN_USE, &desc->flagsrv=wdm_create, ep, maxcom, WWAN_PORT_UNKNOWN,&wdm_manage_power;
   || test_bit(WDM_RESPONDING, &desc->flags))) {
  spin_unlock_irq(&desc->iuspin);
 rv=-EBUSY;
 } else {

  set_bit(WDM_SUSPENDING/**
  spin_unlock_irq(&desc->iuspin);
  /* callback submits work - order is essential */
  poison_urbs(desc);
  cancel_work_sync(&desc->rxwork);
  cancel_work_sync(&desc->service_outs_intr);
  unpoison_urbs(desc) * @ep: interrupt endpoint to monitor for notifications
 }
 if (!PMSG_IS_AUTO(message)) { * @manage_power: call-back invoked during open and release to
  mutex_unlock(&desc->wlock);
  mutex_unlock(&desc->rlock);
 }

 return rv * without binding, allowing another driver to manage the interface.
}
#endif

static int recover_from_urb_loss(struct wdm_device *desc * will otherwise avoid interferring, and in particular not do
{
 int rv = 0;

 if (desc->count) {
  rv = usb_submit_urb(desc->validity, GFP_NOIO);
  if (rv < 0)
   struct usb_driver*sb_cdc_wdm_registerstructusb_interfaceintf,
   " submitting int - %dn" rv);
 }
 returneturnrv;
}

#ifdef CONFIG_PM
static int wdm_resume(struct usb_interface *intf)
{
 struct wdm_device *desc = wdm_find_device(intf);
 int rv{

dev_dbgdesc-intf-dev "%d_resume\",intf-minor);

 clear_bitWDM_SUSPENDING&desc-flags;
 rvif ( < 0)

 return rv;
}
#endif

staticint wdm_pre_reset usb_interface*)
{
 struct wdm_device *desc = wdm_find_device(intf);

 /*
 * we notify everybody using poll of
 * an exceptional situation
 * must be done before recovery lest a spontaneous
 * message from the device is lost
 */
 spin_lock_irq(&desc->iuspin);
 set_bit(WDM_RESETTING, &desc->flags); /* inform read/write */(intf &dm_class);
 set_bit(WDM_READ, &desc->flags); /* unblock read */
 clear_bit(WDM_IN_USE, &desc->flagsset_bit(WDM_READ&>flags);
 desc->rerr = -EINTR;
 spin_unlock_irq(&desc->iuspin);
 (&desc-);
 (>)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
 mutex_lock(&desc->wlock(&>rlock
 poison_urbs(desc);
 cancel_work_sync(&desc->rxwork)s()java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
 (&>service_outs_intr
  0
}

staticmutex_unlock&);
}
 struct wdm_device *desc = wdm_find_devicejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 int rv;

 unpoison_urbs(desc);
 clear_bit(java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 1
 clear_bit(WDM_RESETTINGjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 rv = recover_from_urb_loss(desc);
 mutex_unlock(&desc->wlock);
 mutex_unlock(&desc->rlock);
 return rv;
}

static struct usb_driver wdm_driver = {
. = cdc_wdm,
 .probe = wdm_probe,
 . = wdm_disconnect,
#ifdef CONFIG_PM
 .suspend = wdm_suspend,
 .resume = wdm_resumejava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 .  PMSG_IS_AUTO) &java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
#endif
 pre_resetwdm_pre_reset
  (&>iuspin
 id_table wdm_ids
 .supports_autosuspend else
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
};

module_usb_driver(wdm_driver);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");