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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2013-12-13 13:13:44 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-01-07 07:13:49 -0200 |
| commit | 79aeb3f3083a8a795467eae429cb2d6faf482f32 (patch) | |
| tree | e4cdd6d755b879d1de5eaf63a70d0354f499fdca /drivers/staging/media/davinci_vpfe/vpfe_video.c | |
| parent | c108e660f9196a4cebea79fbd650ed6850934fcc (diff) | |
| download | op-kernel-dev-79aeb3f3083a8a795467eae429cb2d6faf482f32.zip op-kernel-dev-79aeb3f3083a8a795467eae429cb2d6faf482f32.tar.gz | |
[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>
Diffstat (limited to 'drivers/staging/media/davinci_vpfe/vpfe_video.c')
| -rw-r--r-- | drivers/staging/media/davinci_vpfe/vpfe_video.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c index 3b036be..1f3b0f9 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c @@ -1201,6 +1201,8 @@ static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) unsigned long addr; int ret; + if (count == 0) + return -ENOBUFS; ret = mutex_lock_interruptible(&video->lock); if (ret) goto streamoff; |
