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usb: gadget: uvc: Fix error handling in uvc_queue_buffer() 

The conversion to videobuf2 failed to check the return value of
vb2_qbuf(). Fix it.

Cc: stable@vger.kernel.org
Reported-by: Michael Grzeschik <mgr@pengutronix.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-By: Michael Grzeschik <mgr@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Laurent Pinchart 2013-04-29 22:18:01 +02:00 committed by Felipe Balbi
parent 9b3452d1fa
commit ebe864a6cb
1 changed files with 5 additions and 1 deletions
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6
drivers/usb/gadget/uvc_queue.c
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@ -193,12 +193,16 @@ static int uvc_queue_buffer(struct uvc_video_queue *queue,
mutex_lock(&queue->mutex);
ret = vb2_qbuf(&queue->queue, buf);
if (ret < 0)
goto done;
spin_lock_irqsave(&queue->irqlock, flags);
ret = (queue->flags & UVC_QUEUE_PAUSED) != 0;
queue->flags &= ~UVC_QUEUE_PAUSED;
spin_unlock_irqrestore(&queue->irqlock, flags);
mutex_unlock(&queue->mutex);
done:
mutex_unlock(&queue->mutex);
return ret;
}