diff options
| author | Philipp Zabel <p.zabel@pengutronix.de> | 2014-05-09 12:32:10 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-05-23 13:59:02 -0300 |
| commit | 4cf743de880e3e60f106b7fc713f235abad9ea7e (patch) | |
| tree | 3db9500bd2a3cbd85ffa8f33c7d7aa16e2a9f51a | |
| parent | b646f0b7290c2cb68450c61256eb475e44437026 (diff) | |
[media] vb2: fix num_buffers calculation if req->count > VIDEO_MAX_FRAMES
num_buffers can't be bigger than VIDEO_MAX_FRAME. This is assured by:
num_buffers = min_t(unsigned int, req->count, VIDEO_MAX_FRAME);
However, this value is overriden by:
num_buffers = max_t(unsigned int, req->count, q->min_buffers_needed);
It should, instead, use the previously calculated value as an input
to max_t:
num_buffers = max_t(unsigned int, num_buffers, q->min_buffers_needed);
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 8d37e291f722..6489c991700a 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -905,7 +905,7 @@ static int __reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req) * Make sure the requested values and current defaults are sane. */ num_buffers = min_t(unsigned int, req->count, VIDEO_MAX_FRAME); - num_buffers = max_t(unsigned int, req->count, q->min_buffers_needed); + num_buffers = max_t(unsigned int, num_buffers, q->min_buffers_needed); memset(q->plane_sizes, 0, sizeof(q->plane_sizes)); memset(q->alloc_ctx, 0, sizeof(q->alloc_ctx)); q->memory = req->memory; |