[media] vb2: return ENOBUFS in start_streaming in case of too few buffers

This works together with the retry_start_streaming mechanism to allow userspace
to start streaming even if not all required buffers have been queued.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: Tomasz Stanislawski <t.stanislaws@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Kamil Debski <k.debski@samsung.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/media/platform/s5p-tv/mixer_video.c b/drivers/media/platform/s5p-tv/mixer_video.c
index 81b97db111d8..c5059ba0d733 100644
--- a/drivers/media/platform/s5p-tv/mixer_video.c
+++ b/drivers/media/platform/s5p-tv/mixer_video.c
@@ -948,7 +948,7 @@ static int start_streaming(struct vb2_queue *vq, unsigned int count)
 
         if (count == 0) {
                 mxr_dbg(mdev, "no output buffers queued\n");
-                return -EINVAL;
+                return -ENOBUFS;
         }
 
         /* block any changes in output configuration */