273 	struct ep_data	*epdata = ep->driver_data;  in epio_complete()  local
278 		epdata->status = req->status;  in epio_complete()
280 		epdata->status = req->actual;  in epio_complete()
288 get_ready_ep (unsigned f_flags, struct ep_data *epdata, bool is_write)  in get_ready_ep()  argument
293 		if (!mutex_trylock(&epdata->lock))  in get_ready_ep()
295 		if (epdata->state != STATE_EP_ENABLED &&  in get_ready_ep()
296 		    (!is_write || epdata->state != STATE_EP_READY)) {  in get_ready_ep()
297 			mutex_unlock(&epdata->lock);  in get_ready_ep()
305 	val = mutex_lock_interruptible(&epdata->lock);  in get_ready_ep()
309 	switch (epdata->state) {  in get_ready_ep()
321 				shortname, epdata, epdata->state);  in get_ready_ep()
323 	mutex_unlock(&epdata->lock);  in get_ready_ep()
328 ep_io (struct ep_data *epdata, void *buf, unsigned len)  in ep_io()  argument
333 	spin_lock_irq (&epdata->dev->lock);  in ep_io()
334 	if (likely (epdata->ep != NULL)) {  in ep_io()
335 		struct usb_request	*req = epdata->req;  in ep_io()
341 		value = usb_ep_queue (epdata->ep, req, GFP_ATOMIC);  in ep_io()
344 	spin_unlock_irq (&epdata->dev->lock);  in ep_io()
349 			spin_lock_irq (&epdata->dev->lock);  in ep_io()
350 			if (likely (epdata->ep != NULL)) {  in ep_io()
351 				DBG (epdata->dev, "%s i/o interrupted\n",  in ep_io()
352 						epdata->name);  in ep_io()
353 				usb_ep_dequeue (epdata->ep, epdata->req);  in ep_io()
354 				spin_unlock_irq (&epdata->dev->lock);  in ep_io()
357 				if (epdata->status == -ECONNRESET)  in ep_io()
358 					epdata->status = -EINTR;  in ep_io()
360 				spin_unlock_irq (&epdata->dev->lock);  in ep_io()
362 				DBG (epdata->dev, "endpoint gone\n");  in ep_io()
363 				epdata->status = -ENODEV;  in ep_io()
366 		return epdata->status;  in ep_io()
429 	struct ep_data		*epdata;  member
442 	struct ep_data		*epdata;  in ep_aio_cancel()  local
446 	epdata = priv->epdata;  in ep_aio_cancel()
448 	if (likely(epdata && epdata->ep && priv->req))  in ep_aio_cancel()
449 		value = usb_ep_dequeue (epdata->ep, priv->req);  in ep_aio_cancel()
483 	struct ep_data		*epdata = priv->epdata;  in ep_aio_complete()  local
486 	spin_lock(&epdata->dev->lock);  in ep_aio_complete()
488 	priv->epdata = NULL;  in ep_aio_complete()
506 			DBG(epdata->dev, "%s fault %d len %d\n",  in ep_aio_complete()
516 	spin_unlock(&epdata->dev->lock);  in ep_aio_complete()
517 	put_ep(epdata);  in ep_aio_complete()
522 		      struct ep_data *epdata,  in ep_aio()  argument
533 	get_ep(epdata);  in ep_aio()
534 	priv->epdata = epdata;  in ep_aio()
541 	spin_lock_irq(&epdata->dev->lock);  in ep_aio()
543 	if (unlikely(epdata->ep == NULL))  in ep_aio()
546 	req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);  in ep_aio()
556 	value = usb_ep_queue(epdata->ep, req, GFP_ATOMIC);  in ep_aio()
558 		usb_ep_free_request(epdata->ep, req);  in ep_aio()
561 	spin_unlock_irq(&epdata->dev->lock);  in ep_aio()
565 	spin_unlock_irq(&epdata->dev->lock);  in ep_aio()
568 	put_ep(epdata);  in ep_aio()
576 	struct ep_data *epdata = file->private_data;  in ep_read_iter()  local
581 	if ((value = get_ready_ep(file->f_flags, epdata, false)) < 0)  in ep_read_iter()
585 	if (usb_endpoint_dir_in(&epdata->desc)) {  in ep_read_iter()
586 		if (usb_endpoint_xfer_isoc(&epdata->desc) ||  in ep_read_iter()
588 			mutex_unlock(&epdata->lock);  in ep_read_iter()
591 		DBG (epdata->dev, "%s halt\n", epdata->name);  in ep_read_iter()
592 		spin_lock_irq(&epdata->dev->lock);  in ep_read_iter()
593 		if (likely(epdata->ep != NULL))  in ep_read_iter()
594 			usb_ep_set_halt(epdata->ep);  in ep_read_iter()
595 		spin_unlock_irq(&epdata->dev->lock);  in ep_read_iter()
596 		mutex_unlock(&epdata->lock);  in ep_read_iter()
602 		mutex_unlock(&epdata->lock);  in ep_read_iter()
606 		value = ep_io(epdata, buf, len);  in ep_read_iter()
619 		value = ep_aio(iocb, priv, epdata, buf, len);  in ep_read_iter()
625 	mutex_unlock(&epdata->lock);  in ep_read_iter()
635 	struct ep_data *epdata = file->private_data;  in ep_write_iter()  local
641 	if ((value = get_ready_ep(file->f_flags, epdata, true)) < 0)  in ep_write_iter()
644 	configured = epdata->state == STATE_EP_ENABLED;  in ep_write_iter()
647 	if (configured && !usb_endpoint_dir_in(&epdata->desc)) {  in ep_write_iter()
648 		if (usb_endpoint_xfer_isoc(&epdata->desc) ||  in ep_write_iter()
650 			mutex_unlock(&epdata->lock);  in ep_write_iter()
653 		DBG (epdata->dev, "%s halt\n", epdata->name);  in ep_write_iter()
654 		spin_lock_irq(&epdata->dev->lock);  in ep_write_iter()
655 		if (likely(epdata->ep != NULL))  in ep_write_iter()
656 			usb_ep_set_halt(epdata->ep);  in ep_write_iter()
657 		spin_unlock_irq(&epdata->dev->lock);  in ep_write_iter()
658 		mutex_unlock(&epdata->lock);  in ep_write_iter()
664 		mutex_unlock(&epdata->lock);  in ep_write_iter()
674 		value = ep_config(epdata, buf, len);  in ep_write_iter()
676 		value = ep_io(epdata, buf, len);  in ep_write_iter()
681 			value = ep_aio(iocb, priv, epdata, buf, len);  in ep_write_iter()
688 	mutex_unlock(&epdata->lock);  in ep_write_iter()