#define WDM_POLL_RUNNING 6
#define WDM_RESPONDING 7
#define WDM_SUSPENDING 8
+#define WDM_RESETTING 9
#define WDM_MAX 16
else
if (test_bit(WDM_IN_USE, &desc->flags))
r = -EAGAIN;
+
+ if (test_bit(WDM_RESETTING, &desc->flags))
+ r = -EIO;
+
if (r < 0) {
kfree(buf);
goto out;
rv = -ENODEV;
goto err;
}
+ if (test_bit(WDM_RESETTING, &desc->flags)) {
+ rv = -EIO;
+ goto err;
+ }
usb_mark_last_busy(interface_to_usbdev(desc->intf));
if (rv < 0) {
rv = -ERESTARTSYS;
{
struct wdm_device *desc = usb_get_intfdata(intf);
- mutex_lock(&desc->rlock);
- mutex_lock(&desc->wlock);
- kill_urbs(desc);
-
/*
* we notify everybody using poll of
* an exceptional situation
* message from the device is lost
*/
spin_lock_irq(&desc->iuspin);
+ set_bit(WDM_RESETTING, &desc->flags); /* inform read/write */
+ set_bit(WDM_READ, &desc->flags); /* unblock read */
+ clear_bit(WDM_IN_USE, &desc->flags); /* unblock write */
desc->rerr = -EINTR;
spin_unlock_irq(&desc->iuspin);
wake_up_all(&desc->wait);
+ mutex_lock(&desc->rlock);
+ mutex_lock(&desc->wlock);
+ kill_urbs(desc);
+ cancel_work_sync(&desc->rxwork);
return 0;
}
struct wdm_device *desc = usb_get_intfdata(intf);
int rv;
+ clear_bit(WDM_RESETTING, &desc->flags);
rv = recover_from_urb_loss(desc);
mutex_unlock(&desc->wlock);
mutex_unlock(&desc->rlock);