+static int wdm_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct wdm_device *desc = usb_get_intfdata(intf);
+ int rv = 0;
+
+ dev_dbg(&desc->intf->dev, "wdm%d_suspend\n", intf->minor);
+
+ mutex_lock(&desc->plock);
+#ifdef CONFIG_PM
+ if (interface_to_usbdev(desc->intf)->auto_pm && test_bit(WDM_IN_USE, &desc->flags)) {
+ rv = -EBUSY;
+ } else {
+#endif
+ cancel_work_sync(&desc->rxwork);
+ kill_urbs(desc);
+#ifdef CONFIG_PM
+ }
+#endif
+ mutex_unlock(&desc->plock);
+
+ return rv;
+}
+
+static int recover_from_urb_loss(struct wdm_device *desc)
+{
+ int rv = 0;
+
+ if (desc->count) {
+ rv = usb_submit_urb(desc->validity, GFP_NOIO);
+ if (rv < 0)
+ err("Error resume submitting int urb - %d", rv);
+ }
+ return rv;
+}
+static int wdm_resume(struct usb_interface *intf)
+{
+ struct wdm_device *desc = usb_get_intfdata(intf);
+ int rv;
+
+ dev_dbg(&desc->intf->dev, "wdm%d_resume\n", intf->minor);
+ mutex_lock(&desc->plock);
+ rv = recover_from_urb_loss(desc);
+ mutex_unlock(&desc->plock);
+ return rv;
+}
+
+static int wdm_pre_reset(struct usb_interface *intf)
+{
+ struct wdm_device *desc = usb_get_intfdata(intf);
+
+ mutex_lock(&desc->plock);
+ return 0;
+}
+
+static int wdm_post_reset(struct usb_interface *intf)
+{
+ struct wdm_device *desc = usb_get_intfdata(intf);
+ int rv;
+
+ rv = recover_from_urb_loss(desc);
+ mutex_unlock(&desc->plock);
+ return 0;
+}
+