Commit ed3de601 authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Mauro Carvalho Chehab

V4L/DVB: uvcvideo: Use POLLOUT and POLLWRNORM for output devices

The V4L2 specification requires drivers to use the write events in the
file operations poll handler for output devices. The uvcvideo driver
erroneously used read events for all devices. Fix this.
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 35a00c41
......@@ -388,8 +388,12 @@ unsigned int uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,
poll_wait(file, &buf->wait, wait);
if (buf->state == UVC_BUF_STATE_DONE ||
buf->state == UVC_BUF_STATE_ERROR)
buf->state == UVC_BUF_STATE_ERROR) {
if (queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
mask |= POLLIN | POLLRDNORM;
else
mask |= POLLOUT | POLLWRNORM;
}
done:
mutex_unlock(&queue->mutex);
......
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