276 	struct ep_data	*epdata = ep->driver_data;  in epio_complete()  local
281 		epdata->status = req->status;  in epio_complete()
283 		epdata->status = req->actual;  in epio_complete()
291 get_ready_ep (unsigned f_flags, struct ep_data *epdata, bool is_write)  in get_ready_ep()  argument
296 		if (!mutex_trylock(&epdata->lock))  in get_ready_ep()
298 		if (epdata->state != STATE_EP_ENABLED &&  in get_ready_ep()
299 		    (!is_write || epdata->state != STATE_EP_READY)) {  in get_ready_ep()
300 			mutex_unlock(&epdata->lock);  in get_ready_ep()
308 	val = mutex_lock_interruptible(&epdata->lock);  in get_ready_ep()
312 	switch (epdata->state) {  in get_ready_ep()
324 				shortname, epdata, epdata->state);  in get_ready_ep()
326 	mutex_unlock(&epdata->lock);  in get_ready_ep()
331 ep_io (struct ep_data *epdata, void *buf, unsigned len)  in ep_io()  argument
336 	spin_lock_irq (&epdata->dev->lock);  in ep_io()
337 	if (likely (epdata->ep != NULL)) {  in ep_io()
338 		struct usb_request	*req = epdata->req;  in ep_io()
344 		value = usb_ep_queue (epdata->ep, req, GFP_ATOMIC);  in ep_io()
347 	spin_unlock_irq (&epdata->dev->lock);  in ep_io()
352 			spin_lock_irq (&epdata->dev->lock);  in ep_io()
353 			if (likely (epdata->ep != NULL)) {  in ep_io()
354 				DBG (epdata->dev, "%s i/o interrupted\n",  in ep_io()
355 						epdata->name);  in ep_io()
356 				usb_ep_dequeue (epdata->ep, epdata->req);  in ep_io()
357 				spin_unlock_irq (&epdata->dev->lock);  in ep_io()
360 				if (epdata->status == -ECONNRESET)  in ep_io()
361 					epdata->status = -EINTR;  in ep_io()
363 				spin_unlock_irq (&epdata->dev->lock);  in ep_io()
365 				DBG (epdata->dev, "endpoint gone\n");  in ep_io()
367 				epdata->status = -ENODEV;  in ep_io()
370 		return epdata->status;  in ep_io()
433 	struct ep_data		*epdata;  member
446 	struct ep_data		*epdata;  in ep_aio_cancel()  local
450 	epdata = priv->epdata;  in ep_aio_cancel()
452 	if (likely(epdata && epdata->ep && priv->req))  in ep_aio_cancel()
453 		value = usb_ep_dequeue (epdata->ep, priv->req);  in ep_aio_cancel()
487 	struct ep_data		*epdata = priv->epdata;  in ep_aio_complete()  local
490 	spin_lock(&epdata->dev->lock);  in ep_aio_complete()
492 	priv->epdata = NULL;  in ep_aio_complete()
508 			DBG(epdata->dev, "%s fault %d len %d\n",  in ep_aio_complete()
518 	spin_unlock(&epdata->dev->lock);  in ep_aio_complete()
519 	put_ep(epdata);  in ep_aio_complete()
524 		      struct ep_data *epdata,  in ep_aio()  argument
535 	get_ep(epdata);  in ep_aio()
536 	priv->epdata = epdata;  in ep_aio()
543 	spin_lock_irq(&epdata->dev->lock);  in ep_aio()
545 	if (unlikely(epdata->ep == NULL))  in ep_aio()
548 	req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);  in ep_aio()
558 	value = usb_ep_queue(epdata->ep, req, GFP_ATOMIC);  in ep_aio()
560 		usb_ep_free_request(epdata->ep, req);  in ep_aio()
563 	spin_unlock_irq(&epdata->dev->lock);  in ep_aio()
567 	spin_unlock_irq(&epdata->dev->lock);  in ep_aio()
570 	put_ep(epdata);  in ep_aio()
578 	struct ep_data *epdata = file->private_data;  in ep_read_iter()  local
583 	if ((value = get_ready_ep(file->f_flags, epdata, false)) < 0)  in ep_read_iter()
587 	if (usb_endpoint_dir_in(&epdata->desc)) {  in ep_read_iter()
588 		if (usb_endpoint_xfer_isoc(&epdata->desc) ||  in ep_read_iter()
590 			mutex_unlock(&epdata->lock);  in ep_read_iter()
593 		DBG (epdata->dev, "%s halt\n", epdata->name);  in ep_read_iter()
594 		spin_lock_irq(&epdata->dev->lock);  in ep_read_iter()
595 		if (likely(epdata->ep != NULL))  in ep_read_iter()
596 			usb_ep_set_halt(epdata->ep);  in ep_read_iter()
597 		spin_unlock_irq(&epdata->dev->lock);  in ep_read_iter()
598 		mutex_unlock(&epdata->lock);  in ep_read_iter()
604 		mutex_unlock(&epdata->lock);  in ep_read_iter()
608 		value = ep_io(epdata, buf, len);  in ep_read_iter()
621 		value = ep_aio(iocb, priv, epdata, buf, len);  in ep_read_iter()
627 	mutex_unlock(&epdata->lock);  in ep_read_iter()
637 	struct ep_data *epdata = file->private_data;  in ep_write_iter()  local
643 	if ((value = get_ready_ep(file->f_flags, epdata, true)) < 0)  in ep_write_iter()
646 	configured = epdata->state == STATE_EP_ENABLED;  in ep_write_iter()
649 	if (configured && !usb_endpoint_dir_in(&epdata->desc)) {  in ep_write_iter()
650 		if (usb_endpoint_xfer_isoc(&epdata->desc) ||  in ep_write_iter()
652 			mutex_unlock(&epdata->lock);  in ep_write_iter()
655 		DBG (epdata->dev, "%s halt\n", epdata->name);  in ep_write_iter()
656 		spin_lock_irq(&epdata->dev->lock);  in ep_write_iter()
657 		if (likely(epdata->ep != NULL))  in ep_write_iter()
658 			usb_ep_set_halt(epdata->ep);  in ep_write_iter()
659 		spin_unlock_irq(&epdata->dev->lock);  in ep_write_iter()
660 		mutex_unlock(&epdata->lock);  in ep_write_iter()
666 		mutex_unlock(&epdata->lock);  in ep_write_iter()
676 		value = ep_config(epdata, buf, len);  in ep_write_iter()
678 		value = ep_io(epdata, buf, len);  in ep_write_iter()
683 			value = ep_aio(iocb, priv, epdata, buf, len);  in ep_write_iter()
690 	mutex_unlock(&epdata->lock);  in ep_write_iter()