115 	struct wdm_device *desc;  in wdm_find_device()  local
118 	list_for_each_entry(desc, &wdm_device_list, device_list)  in wdm_find_device()
119 		if (desc->intf == intf)  in wdm_find_device()
121 	desc = NULL;  in wdm_find_device()
125 	return desc;  in wdm_find_device()
130 	struct wdm_device *desc;  in wdm_find_device_by_minor()  local
133 	list_for_each_entry(desc, &wdm_device_list, device_list)  in wdm_find_device_by_minor()
134 		if (desc->intf->minor == minor)  in wdm_find_device_by_minor()
136 	desc = NULL;  in wdm_find_device_by_minor()
140 	return desc;  in wdm_find_device_by_minor()
146 	struct wdm_device *desc;  in wdm_out_callback()  local
147 	desc = urb->context;  in wdm_out_callback()
148 	spin_lock(&desc->iuspin);  in wdm_out_callback()
149 	desc->werr = urb->status;  in wdm_out_callback()
150 	spin_unlock(&desc->iuspin);  in wdm_out_callback()
151 	kfree(desc->outbuf);  in wdm_out_callback()
152 	desc->outbuf = NULL;  in wdm_out_callback()
153 	clear_bit(WDM_IN_USE, &desc->flags);  in wdm_out_callback()
154 	wake_up(&desc->wait);  in wdm_out_callback()
159 	struct wdm_device *desc = urb->context;  in wdm_in_callback()  local
163 	spin_lock(&desc->iuspin);  in wdm_in_callback()
164 	clear_bit(WDM_RESPONDING, &desc->flags);  in wdm_in_callback()
169 			dev_dbg(&desc->intf->dev,  in wdm_in_callback()
173 			dev_dbg(&desc->intf->dev,  in wdm_in_callback()
177 			dev_dbg(&desc->intf->dev,  in wdm_in_callback()
181 			dev_err(&desc->intf->dev,  in wdm_in_callback()
185 			dev_err(&desc->intf->dev,  in wdm_in_callback()
191 	desc->rerr = status;  in wdm_in_callback()
192 	if (length + desc->length > desc->wMaxCommand) {  in wdm_in_callback()
194 		set_bit(WDM_OVERFLOW, &desc->flags);  in wdm_in_callback()
197 		if (!test_bit(WDM_OVERFLOW, &desc->flags)) {  in wdm_in_callback()
198 			memmove(desc->ubuf + desc->length, desc->inbuf, length);  in wdm_in_callback()
199 			desc->length += length;  in wdm_in_callback()
200 			desc->reslength = length;  in wdm_in_callback()
204 	wake_up(&desc->wait);  in wdm_in_callback()
206 	set_bit(WDM_READ, &desc->flags);  in wdm_in_callback()
207 	spin_unlock(&desc->iuspin);  in wdm_in_callback()
215 	struct wdm_device *desc;  in wdm_int_callback()  local
218 	desc = urb->context;  in wdm_int_callback()
219 	dr = (struct usb_cdc_notification *)desc->sbuf;  in wdm_int_callback()
228 			set_bit(WDM_INT_STALL, &desc->flags);  in wdm_int_callback()
229 			dev_err(&desc->intf->dev, "Stall on int endpoint\n");  in wdm_int_callback()
232 			dev_err(&desc->intf->dev,  in wdm_int_callback()
239 		dev_err(&desc->intf->dev, "wdm_int_callback - %d bytes\n",  in wdm_int_callback()
246 		dev_dbg(&desc->intf->dev,  in wdm_int_callback()
253 		dev_dbg(&desc->intf->dev,  in wdm_int_callback()
258 		dev_dbg(&desc->intf->dev, "SPEED_CHANGE received (len %u)",  in wdm_int_callback()
262 		clear_bit(WDM_POLL_RUNNING, &desc->flags);  in wdm_int_callback()
263 		dev_err(&desc->intf->dev,  in wdm_int_callback()
271 	spin_lock(&desc->iuspin);  in wdm_int_callback()
272 	responding = test_and_set_bit(WDM_RESPONDING, &desc->flags);  in wdm_int_callback()
273 	if (!desc->resp_count++ && !responding  in wdm_int_callback()
274 		&& !test_bit(WDM_DISCONNECTING, &desc->flags)  in wdm_int_callback()
275 		&& !test_bit(WDM_SUSPENDING, &desc->flags)) {  in wdm_int_callback()
276 		rv = usb_submit_urb(desc->response, GFP_ATOMIC);  in wdm_int_callback()
277 		dev_dbg(&desc->intf->dev, "%s: usb_submit_urb %d",  in wdm_int_callback()
280 	spin_unlock(&desc->iuspin);  in wdm_int_callback()
282 		clear_bit(WDM_RESPONDING, &desc->flags);  in wdm_int_callback()
287 			rv = schedule_work(&desc->rxwork);  in wdm_int_callback()
289 				dev_err(&desc->intf->dev,  in wdm_int_callback()
296 		dev_err(&desc->intf->dev,  in wdm_int_callback()
302 static void kill_urbs(struct wdm_device *desc)  in kill_urbs()  argument
305 	usb_kill_urb(desc->command);  in kill_urbs()
306 	usb_kill_urb(desc->validity);  in kill_urbs()
307 	usb_kill_urb(desc->response);  in kill_urbs()
310 static void free_urbs(struct wdm_device *desc)  in free_urbs()  argument
312 	usb_free_urb(desc->validity);  in free_urbs()
313 	usb_free_urb(desc->response);  in free_urbs()
314 	usb_free_urb(desc->command);  in free_urbs()
317 static void cleanup(struct wdm_device *desc)  in cleanup()  argument
319 	kfree(desc->sbuf);  in cleanup()
320 	kfree(desc->inbuf);  in cleanup()
321 	kfree(desc->orq);  in cleanup()
322 	kfree(desc->irq);  in cleanup()
323 	kfree(desc->ubuf);  in cleanup()
324 	free_urbs(desc);  in cleanup()
325 	kfree(desc);  in cleanup()
333 	struct wdm_device *desc = file->private_data;  in wdm_write()  local
336 	if (count > desc->wMaxCommand)  in wdm_write()
337 		count = desc->wMaxCommand;  in wdm_write()
339 	spin_lock_irq(&desc->iuspin);  in wdm_write()
340 	we = desc->werr;  in wdm_write()
341 	desc->werr = 0;  in wdm_write()
342 	spin_unlock_irq(&desc->iuspin);  in wdm_write()
359 	r = mutex_lock_interruptible(&desc->wlock);  in wdm_write()
364 	if (test_bit(WDM_DISCONNECTING, &desc->flags)) {  in wdm_write()
369 	r = usb_autopm_get_interface(desc->intf);  in wdm_write()
376 		r = wait_event_interruptible(desc->wait, !test_bit(WDM_IN_USE,  in wdm_write()
377 								&desc->flags));  in wdm_write()
379 		if (test_bit(WDM_IN_USE, &desc->flags))  in wdm_write()
382 	if (test_bit(WDM_RESETTING, &desc->flags))  in wdm_write()
390 	req = desc->orq;  in wdm_write()
392 		desc->command,  in wdm_write()
393 		interface_to_usbdev(desc->intf),  in wdm_write()
395 		usb_sndctrlpipe(interface_to_usbdev(desc->intf), 0),  in wdm_write()
400 		desc  in wdm_write()
407 	req->wIndex = desc->inum; /* already converted */  in wdm_write()
409 	set_bit(WDM_IN_USE, &desc->flags);  in wdm_write()
410 	desc->outbuf = buf;  in wdm_write()
412 	rv = usb_submit_urb(desc->command, GFP_KERNEL);  in wdm_write()
414 		desc->outbuf = NULL;  in wdm_write()
415 		clear_bit(WDM_IN_USE, &desc->flags);  in wdm_write()
416 		dev_err(&desc->intf->dev, "Tx URB error: %d\n", rv);  in wdm_write()
420 		dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d",  in wdm_write()
424 	usb_autopm_put_interface(desc->intf);  in wdm_write()
425 	mutex_unlock(&desc->wlock);  in wdm_write()
430 	usb_autopm_put_interface(desc->intf);  in wdm_write()
432 	mutex_unlock(&desc->wlock);  in wdm_write()
444 static int clear_wdm_read_flag(struct wdm_device *desc)  in clear_wdm_read_flag()  argument
448 	clear_bit(WDM_READ, &desc->flags);  in clear_wdm_read_flag()
451 	if (!desc->resp_count || !--desc->resp_count)  in clear_wdm_read_flag()
454 	set_bit(WDM_RESPONDING, &desc->flags);  in clear_wdm_read_flag()
455 	spin_unlock_irq(&desc->iuspin);  in clear_wdm_read_flag()
456 	rv = usb_submit_urb(desc->response, GFP_KERNEL);  in clear_wdm_read_flag()
457 	spin_lock_irq(&desc->iuspin);  in clear_wdm_read_flag()
459 		dev_err(&desc->intf->dev,  in clear_wdm_read_flag()
463 		clear_bit(WDM_RESPONDING, &desc->flags);  in clear_wdm_read_flag()
464 		desc->resp_count = 0;  in clear_wdm_read_flag()
475 	struct wdm_device *desc = file->private_data;  in wdm_read()  local
478 	rv = mutex_lock_interruptible(&desc->rlock); /*concurrent reads */  in wdm_read()
482 	cntr = ACCESS_ONCE(desc->length);  in wdm_read()
484 		desc->read = 0;  in wdm_read()
486 		if (test_bit(WDM_DISCONNECTING, &desc->flags)) {  in wdm_read()
490 		if (test_bit(WDM_OVERFLOW, &desc->flags)) {  in wdm_read()
491 			clear_bit(WDM_OVERFLOW, &desc->flags);  in wdm_read()
497 			if (!test_bit(WDM_READ, &desc->flags)) {  in wdm_read()
503 			rv = wait_event_interruptible(desc->wait,  in wdm_read()
504 				test_bit(WDM_READ, &desc->flags));  in wdm_read()
508 		if (test_bit(WDM_DISCONNECTING, &desc->flags)) {  in wdm_read()
512 		if (test_bit(WDM_RESETTING, &desc->flags)) {  in wdm_read()
516 		usb_mark_last_busy(interface_to_usbdev(desc->intf));  in wdm_read()
522 		spin_lock_irq(&desc->iuspin);  in wdm_read()
524 		if (desc->rerr) { /* read completed, error happened */  in wdm_read()
525 			rv = usb_translate_errors(desc->rerr);  in wdm_read()
526 			desc->rerr = 0;  in wdm_read()
527 			spin_unlock_irq(&desc->iuspin);  in wdm_read()
534 		if (!test_bit(WDM_READ, &desc->flags)) { /* lost race */  in wdm_read()
535 			spin_unlock_irq(&desc->iuspin);  in wdm_read()
539 		if (!desc->reslength) { /* zero length read */  in wdm_read()
540 			dev_dbg(&desc->intf->dev, "%s: zero length - clearing WDM_READ\n", __func__);  in wdm_read()
541 			rv = clear_wdm_read_flag(desc);  in wdm_read()
542 			spin_unlock_irq(&desc->iuspin);  in wdm_read()
547 		cntr = desc->length;  in wdm_read()
548 		spin_unlock_irq(&desc->iuspin);  in wdm_read()
553 	rv = copy_to_user(buffer, desc->ubuf, cntr);  in wdm_read()
559 	spin_lock_irq(&desc->iuspin);  in wdm_read()
561 	for (i = 0; i < desc->length - cntr; i++)  in wdm_read()
562 		desc->ubuf[i] = desc->ubuf[i + cntr];  in wdm_read()
564 	desc->length -= cntr;  in wdm_read()
566 	if (!desc->length)  in wdm_read()
567 		clear_wdm_read_flag(desc);  in wdm_read()
568 	spin_unlock_irq(&desc->iuspin);  in wdm_read()
572 	mutex_unlock(&desc->rlock);  in wdm_read()
578 	struct wdm_device *desc = file->private_data;  in wdm_flush()  local
580 	wait_event(desc->wait, !test_bit(WDM_IN_USE, &desc->flags));  in wdm_flush()
583 	if (desc->werr < 0 && !test_bit(WDM_DISCONNECTING, &desc->flags))  in wdm_flush()
584 		dev_err(&desc->intf->dev, "Error in flush path: %d\n",  in wdm_flush()
585 			desc->werr);  in wdm_flush()
587 	return usb_translate_errors(desc->werr);  in wdm_flush()
592 	struct wdm_device *desc = file->private_data;  in wdm_poll()  local
596 	spin_lock_irqsave(&desc->iuspin, flags);  in wdm_poll()
597 	if (test_bit(WDM_DISCONNECTING, &desc->flags)) {  in wdm_poll()
599 		spin_unlock_irqrestore(&desc->iuspin, flags);  in wdm_poll()
602 	if (test_bit(WDM_READ, &desc->flags))  in wdm_poll()
604 	if (desc->rerr || desc->werr)  in wdm_poll()
606 	if (!test_bit(WDM_IN_USE, &desc->flags))  in wdm_poll()
608 	spin_unlock_irqrestore(&desc->iuspin, flags);  in wdm_poll()
610 	poll_wait(file, &desc->wait, wait);  in wdm_poll()
621 	struct wdm_device *desc;  in wdm_open()  local
624 	desc = wdm_find_device_by_minor(minor);  in wdm_open()
625 	if (!desc)  in wdm_open()
628 	intf = desc->intf;  in wdm_open()
629 	if (test_bit(WDM_DISCONNECTING, &desc->flags))  in wdm_open()
631 	file->private_data = desc;  in wdm_open()
633 	rv = usb_autopm_get_interface(desc->intf);  in wdm_open()
635 		dev_err(&desc->intf->dev, "Error autopm - %d\n", rv);  in wdm_open()
640 	mutex_lock(&desc->wlock);  in wdm_open()
641 	if (!desc->count++) {  in wdm_open()
642 		desc->werr = 0;  in wdm_open()
643 		desc->rerr = 0;  in wdm_open()
644 		rv = usb_submit_urb(desc->validity, GFP_KERNEL);  in wdm_open()
646 			desc->count--;  in wdm_open()
647 			dev_err(&desc->intf->dev,  in wdm_open()
654 	mutex_unlock(&desc->wlock);  in wdm_open()
655 	if (desc->count == 1)  in wdm_open()
656 		desc->manage_power(intf, 1);  in wdm_open()
657 	usb_autopm_put_interface(desc->intf);  in wdm_open()
665 	struct wdm_device *desc = file->private_data;  in wdm_release()  local
670 	mutex_lock(&desc->wlock);  in wdm_release()
671 	desc->count--;  in wdm_release()
672 	mutex_unlock(&desc->wlock);  in wdm_release()
674 	if (!desc->count) {  in wdm_release()
675 		if (!test_bit(WDM_DISCONNECTING, &desc->flags)) {  in wdm_release()
676 			dev_dbg(&desc->intf->dev, "wdm_release: cleanup");  in wdm_release()
677 			kill_urbs(desc);  in wdm_release()
678 			spin_lock_irq(&desc->iuspin);  in wdm_release()
679 			desc->resp_count = 0;  in wdm_release()
680 			spin_unlock_irq(&desc->iuspin);  in wdm_release()
681 			desc->manage_power(desc->intf, 0);  in wdm_release()
685 			cleanup(desc);  in wdm_release()
694 	struct wdm_device *desc = file->private_data;  in wdm_ioctl()  local
699 		if (copy_to_user((void __user *)arg, &desc->wMaxCommand, sizeof(desc->wMaxCommand)))  in wdm_ioctl()
730 	struct wdm_device *desc = container_of(work, struct wdm_device, rxwork);  in wdm_rxwork()  local
735 	spin_lock_irqsave(&desc->iuspin, flags);  in wdm_rxwork()
736 	if (test_bit(WDM_DISCONNECTING, &desc->flags)) {  in wdm_rxwork()
737 		spin_unlock_irqrestore(&desc->iuspin, flags);  in wdm_rxwork()
739 		responding = test_and_set_bit(WDM_RESPONDING, &desc->flags);  in wdm_rxwork()
740 		spin_unlock_irqrestore(&desc->iuspin, flags);  in wdm_rxwork()
742 			rv = usb_submit_urb(desc->response, GFP_KERNEL);  in wdm_rxwork()
744 			spin_lock_irqsave(&desc->iuspin, flags);  in wdm_rxwork()
745 			clear_bit(WDM_RESPONDING, &desc->flags);  in wdm_rxwork()
746 			if (!test_bit(WDM_DISCONNECTING, &desc->flags))  in wdm_rxwork()
747 				schedule_work(&desc->rxwork);  in wdm_rxwork()
748 			spin_unlock_irqrestore(&desc->iuspin, flags);  in wdm_rxwork()
759 	struct wdm_device *desc;  in wdm_create()  local
761 	desc = kzalloc(sizeof(struct wdm_device), GFP_KERNEL);  in wdm_create()
762 	if (!desc)  in wdm_create()
764 	INIT_LIST_HEAD(&desc->device_list);  in wdm_create()
765 	mutex_init(&desc->rlock);  in wdm_create()
766 	mutex_init(&desc->wlock);  in wdm_create()
767 	spin_lock_init(&desc->iuspin);  in wdm_create()
768 	init_waitqueue_head(&desc->wait);  in wdm_create()
769 	desc->wMaxCommand = bufsize;  in wdm_create()
771 	desc->inum = cpu_to_le16((u16)intf->cur_altsetting->desc.bInterfaceNumber);  in wdm_create()
772 	desc->intf = intf;  in wdm_create()
773 	INIT_WORK(&desc->rxwork, wdm_rxwork);  in wdm_create()
779 	desc->wMaxPacketSize = usb_endpoint_maxp(ep);  in wdm_create()
781 	desc->orq = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);  in wdm_create()
782 	if (!desc->orq)  in wdm_create()
784 	desc->irq = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);  in wdm_create()
785 	if (!desc->irq)  in wdm_create()
788 	desc->validity = usb_alloc_urb(0, GFP_KERNEL);  in wdm_create()
789 	if (!desc->validity)  in wdm_create()
792 	desc->response = usb_alloc_urb(0, GFP_KERNEL);  in wdm_create()
793 	if (!desc->response)  in wdm_create()
796 	desc->command = usb_alloc_urb(0, GFP_KERNEL);  in wdm_create()
797 	if (!desc->command)  in wdm_create()
800 	desc->ubuf = kmalloc(desc->wMaxCommand, GFP_KERNEL);  in wdm_create()
801 	if (!desc->ubuf)  in wdm_create()
804 	desc->sbuf = kmalloc(desc->wMaxPacketSize, GFP_KERNEL);  in wdm_create()
805 	if (!desc->sbuf)  in wdm_create()
808 	desc->inbuf = kmalloc(desc->wMaxCommand, GFP_KERNEL);  in wdm_create()
809 	if (!desc->inbuf)  in wdm_create()
813 		desc->validity,  in wdm_create()
816 		desc->sbuf,  in wdm_create()
817 		desc->wMaxPacketSize,  in wdm_create()
819 		desc,  in wdm_create()
823 	desc->irq->bRequestType = (USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE);  in wdm_create()
824 	desc->irq->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;  in wdm_create()
825 	desc->irq->wValue = 0;  in wdm_create()
826 	desc->irq->wIndex = desc->inum; /* already converted */  in wdm_create()
827 	desc->irq->wLength = cpu_to_le16(desc->wMaxCommand);  in wdm_create()
830 		desc->response,  in wdm_create()
833 		usb_rcvctrlpipe(interface_to_usbdev(desc->intf), 0),  in wdm_create()
834 		(unsigned char *)desc->irq,  in wdm_create()
835 		desc->inbuf,  in wdm_create()
836 		desc->wMaxCommand,  in wdm_create()
838 		desc  in wdm_create()
841 	desc->manage_power = manage_power;  in wdm_create()
844 	list_add(&desc->device_list, &wdm_device_list);  in wdm_create()
856 	list_del(&desc->device_list);  in wdm_create()
858 	cleanup(desc);  in wdm_create()
912 	if (iface->desc.bNumEndpoints != 1)  in wdm_probe()
914 	ep = &iface->endpoint[0].desc;  in wdm_probe()
960 	struct wdm_device *desc;  in wdm_disconnect()  local
964 	desc = wdm_find_device(intf);  in wdm_disconnect()
968 	spin_lock_irqsave(&desc->iuspin, flags);  in wdm_disconnect()
969 	set_bit(WDM_DISCONNECTING, &desc->flags);  in wdm_disconnect()
970 	set_bit(WDM_READ, &desc->flags);  in wdm_disconnect()
972 	clear_bit(WDM_IN_USE, &desc->flags);  in wdm_disconnect()
973 	spin_unlock_irqrestore(&desc->iuspin, flags);  in wdm_disconnect()
974 	wake_up_all(&desc->wait);  in wdm_disconnect()
975 	mutex_lock(&desc->rlock);  in wdm_disconnect()
976 	mutex_lock(&desc->wlock);  in wdm_disconnect()
977 	kill_urbs(desc);  in wdm_disconnect()
978 	cancel_work_sync(&desc->rxwork);  in wdm_disconnect()
979 	mutex_unlock(&desc->wlock);  in wdm_disconnect()
980 	mutex_unlock(&desc->rlock);  in wdm_disconnect()
984 	list_del(&desc->device_list);  in wdm_disconnect()
987 	if (!desc->count)  in wdm_disconnect()
988 		cleanup(desc);  in wdm_disconnect()
990 		dev_dbg(&intf->dev, "%s: %d open files - postponing cleanup\n", __func__, desc->count);  in wdm_disconnect()
997 	struct wdm_device *desc = wdm_find_device(intf);  in wdm_suspend()  local
1000 	dev_dbg(&desc->intf->dev, "wdm%d_suspend\n", intf->minor);  in wdm_suspend()
1004 		mutex_lock(&desc->rlock);  in wdm_suspend()
1005 		mutex_lock(&desc->wlock);  in wdm_suspend()
1007 	spin_lock_irq(&desc->iuspin);  in wdm_suspend()
1010 			(test_bit(WDM_IN_USE, &desc->flags)  in wdm_suspend()
1011 			|| test_bit(WDM_RESPONDING, &desc->flags))) {  in wdm_suspend()
1012 		spin_unlock_irq(&desc->iuspin);  in wdm_suspend()
1016 		set_bit(WDM_SUSPENDING, &desc->flags);  in wdm_suspend()
1017 		spin_unlock_irq(&desc->iuspin);  in wdm_suspend()
1019 		kill_urbs(desc);  in wdm_suspend()
1020 		cancel_work_sync(&desc->rxwork);  in wdm_suspend()
1023 		mutex_unlock(&desc->wlock);  in wdm_suspend()
1024 		mutex_unlock(&desc->rlock);  in wdm_suspend()
1031 static int recover_from_urb_loss(struct wdm_device *desc)  in recover_from_urb_loss()  argument
1035 	if (desc->count) {  in recover_from_urb_loss()
1036 		rv = usb_submit_urb(desc->validity, GFP_NOIO);  in recover_from_urb_loss()
1038 			dev_err(&desc->intf->dev,  in recover_from_urb_loss()
1047 	struct wdm_device *desc = wdm_find_device(intf);  in wdm_resume()  local
1050 	dev_dbg(&desc->intf->dev, "wdm%d_resume\n", intf->minor);  in wdm_resume()
1052 	clear_bit(WDM_SUSPENDING, &desc->flags);  in wdm_resume()
1053 	rv = recover_from_urb_loss(desc);  in wdm_resume()
1061 	struct wdm_device *desc = wdm_find_device(intf);  in wdm_pre_reset()  local
1069 	spin_lock_irq(&desc->iuspin);  in wdm_pre_reset()
1070 	set_bit(WDM_RESETTING, &desc->flags);	/* inform read/write */  in wdm_pre_reset()
1071 	set_bit(WDM_READ, &desc->flags);	/* unblock read */  in wdm_pre_reset()
1072 	clear_bit(WDM_IN_USE, &desc->flags);	/* unblock write */  in wdm_pre_reset()
1073 	desc->rerr = -EINTR;  in wdm_pre_reset()
1074 	spin_unlock_irq(&desc->iuspin);  in wdm_pre_reset()
1075 	wake_up_all(&desc->wait);  in wdm_pre_reset()
1076 	mutex_lock(&desc->rlock);  in wdm_pre_reset()
1077 	mutex_lock(&desc->wlock);  in wdm_pre_reset()
1078 	kill_urbs(desc);  in wdm_pre_reset()
1079 	cancel_work_sync(&desc->rxwork);  in wdm_pre_reset()
1085 	struct wdm_device *desc = wdm_find_device(intf);  in wdm_post_reset()  local
1088 	clear_bit(WDM_OVERFLOW, &desc->flags);  in wdm_post_reset()
1089 	clear_bit(WDM_RESETTING, &desc->flags);  in wdm_post_reset()
1090 	rv = recover_from_urb_loss(desc);  in wdm_post_reset()
1091 	mutex_unlock(&desc->wlock);  in wdm_post_reset()
1092 	mutex_unlock(&desc->rlock);  in wdm_post_reset()