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Commit 9b558434 authored by Pawel Osciak's avatar Pawel Osciak Committed by Mauro Carvalho Chehab
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V4L/DVB: videobuf: make poll() report proper flags for output video devices 



According to the V4L2 specification, poll() should set POLLOUT | POLLWRNORM
flags for output devices after the frame has been displayed.

Signed-off-by: default avatarPawel Osciak <p.osciak@samsung.com>
Reviewed-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent fc7f8fd4

drivers/media/video/videobuf-core.c

+12 −2
Original line number Diff line number Diff line
@@ -1120,8 +1120,18 @@ unsigned int videobuf_poll_stream(struct file *file, 
	if (0 == rc) {

		poll_wait(file, &buf->done, wait);

		if (buf->state == VIDEOBUF_DONE ||

		    buf->state == VIDEOBUF_ERROR)

		    buf->state == VIDEOBUF_ERROR) {

			switch (q->type) {

			case V4L2_BUF_TYPE_VIDEO_OUTPUT:

			case V4L2_BUF_TYPE_VBI_OUTPUT:

			case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:

				rc = POLLOUT | POLLWRNORM;

				break;

			default:

				rc = POLLIN | POLLRDNORM;

				break;

			}

		}

	}

	mutex_unlock(&q->vb_lock);

	return rc;