274 	struct ep_data	*epdata = ep->driver_data;  in epio_complete()  local
279 		epdata->status = req->status;  in epio_complete()
281 		epdata->status = req->actual;  in epio_complete()
289 get_ready_ep (unsigned f_flags, struct ep_data *epdata, bool is_write)  in get_ready_ep()  argument
294 		if (!mutex_trylock(&epdata->lock))  in get_ready_ep()
296 		if (epdata->state != STATE_EP_ENABLED &&  in get_ready_ep()
297 		    (!is_write || epdata->state != STATE_EP_READY)) {  in get_ready_ep()
298 			mutex_unlock(&epdata->lock);  in get_ready_ep()
306 	val = mutex_lock_interruptible(&epdata->lock);  in get_ready_ep()
310 	switch (epdata->state) {  in get_ready_ep()
322 				shortname, epdata, epdata->state);  in get_ready_ep()
324 	mutex_unlock(&epdata->lock);  in get_ready_ep()
329 ep_io (struct ep_data *epdata, void *buf, unsigned len)  in ep_io()  argument
334 	spin_lock_irq (&epdata->dev->lock);  in ep_io()
335 	if (likely (epdata->ep != NULL)) {  in ep_io()
336 		struct usb_request	*req = epdata->req;  in ep_io()
342 		value = usb_ep_queue (epdata->ep, req, GFP_ATOMIC);  in ep_io()
345 	spin_unlock_irq (&epdata->dev->lock);  in ep_io()
350 			spin_lock_irq (&epdata->dev->lock);  in ep_io()
351 			if (likely (epdata->ep != NULL)) {  in ep_io()
352 				DBG (epdata->dev, "%s i/o interrupted\n",  in ep_io()
353 						epdata->name);  in ep_io()
354 				usb_ep_dequeue (epdata->ep, epdata->req);  in ep_io()
355 				spin_unlock_irq (&epdata->dev->lock);  in ep_io()
358 				if (epdata->status == -ECONNRESET)  in ep_io()
359 					epdata->status = -EINTR;  in ep_io()
361 				spin_unlock_irq (&epdata->dev->lock);  in ep_io()
363 				DBG (epdata->dev, "endpoint gone\n");  in ep_io()
364 				epdata->status = -ENODEV;  in ep_io()
367 		return epdata->status;  in ep_io()
430 	struct ep_data		*epdata;  member
443 	struct ep_data		*epdata;  in ep_aio_cancel()  local
447 	epdata = priv->epdata;  in ep_aio_cancel()
449 	if (likely(epdata && epdata->ep && priv->req))  in ep_aio_cancel()
450 		value = usb_ep_dequeue (epdata->ep, priv->req);  in ep_aio_cancel()
484 	struct ep_data		*epdata = priv->epdata;  in ep_aio_complete()  local
487 	spin_lock(&epdata->dev->lock);  in ep_aio_complete()
489 	priv->epdata = NULL;  in ep_aio_complete()
507 			DBG(epdata->dev, "%s fault %d len %d\n",  in ep_aio_complete()
515 	spin_unlock(&epdata->dev->lock);  in ep_aio_complete()
518 	put_ep(epdata);  in ep_aio_complete()
523 		      struct ep_data *epdata,  in ep_aio()  argument
534 	get_ep(epdata);  in ep_aio()
535 	priv->epdata = epdata;  in ep_aio()
542 	spin_lock_irq(&epdata->dev->lock);  in ep_aio()
544 	if (unlikely(epdata->ep))  in ep_aio()
547 	req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);  in ep_aio()
557 	value = usb_ep_queue(epdata->ep, req, GFP_ATOMIC);  in ep_aio()
559 		usb_ep_free_request(epdata->ep, req);  in ep_aio()
562 	spin_unlock_irq(&epdata->dev->lock);  in ep_aio()
566 	spin_unlock_irq(&epdata->dev->lock);  in ep_aio()
569 	put_ep(epdata);  in ep_aio()
577 	struct ep_data *epdata = file->private_data;  in ep_read_iter()  local
582 	if ((value = get_ready_ep(file->f_flags, epdata, false)) < 0)  in ep_read_iter()
586 	if (usb_endpoint_dir_in(&epdata->desc)) {  in ep_read_iter()
587 		if (usb_endpoint_xfer_isoc(&epdata->desc) ||  in ep_read_iter()
589 			mutex_unlock(&epdata->lock);  in ep_read_iter()
592 		DBG (epdata->dev, "%s halt\n", epdata->name);  in ep_read_iter()
593 		spin_lock_irq(&epdata->dev->lock);  in ep_read_iter()
594 		if (likely(epdata->ep != NULL))  in ep_read_iter()
595 			usb_ep_set_halt(epdata->ep);  in ep_read_iter()
596 		spin_unlock_irq(&epdata->dev->lock);  in ep_read_iter()
597 		mutex_unlock(&epdata->lock);  in ep_read_iter()
603 		mutex_unlock(&epdata->lock);  in ep_read_iter()
607 		value = ep_io(epdata, buf, len);  in ep_read_iter()
620 		value = ep_aio(iocb, priv, epdata, buf, len);  in ep_read_iter()
626 	mutex_unlock(&epdata->lock);  in ep_read_iter()
636 	struct ep_data *epdata = file->private_data;  in ep_write_iter()  local
642 	if ((value = get_ready_ep(file->f_flags, epdata, true)) < 0)  in ep_write_iter()
645 	configured = epdata->state == STATE_EP_ENABLED;  in ep_write_iter()
648 	if (configured && !usb_endpoint_dir_in(&epdata->desc)) {  in ep_write_iter()
649 		if (usb_endpoint_xfer_isoc(&epdata->desc) ||  in ep_write_iter()
651 			mutex_unlock(&epdata->lock);  in ep_write_iter()
654 		DBG (epdata->dev, "%s halt\n", epdata->name);  in ep_write_iter()
655 		spin_lock_irq(&epdata->dev->lock);  in ep_write_iter()
656 		if (likely(epdata->ep != NULL))  in ep_write_iter()
657 			usb_ep_set_halt(epdata->ep);  in ep_write_iter()
658 		spin_unlock_irq(&epdata->dev->lock);  in ep_write_iter()
659 		mutex_unlock(&epdata->lock);  in ep_write_iter()
665 		mutex_unlock(&epdata->lock);  in ep_write_iter()
675 		value = ep_config(epdata, buf, len);  in ep_write_iter()
677 		value = ep_io(epdata, buf, len);  in ep_write_iter()
682 			value = ep_aio(iocb, priv, epdata, buf, len);  in ep_write_iter()
689 	mutex_unlock(&epdata->lock);  in ep_write_iter()