Em Mon, 9 Apr 2018 16:20:18 +0200
Hans Verkuil <hverkuil@xxxxxxxxx> escreveu:
> From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
>
> Add a new helper function that returns true if a media_request
> contains buffers.
>
> Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
> ---
> drivers/media/common/videobuf2/videobuf2-core.c | 12 ++++++++++++
> include/media/videobuf2-core.h | 2 ++
> 2 files changed, 14 insertions(+)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 4f6c0b2d7d1a..13c9d9e243dd 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -1339,6 +1339,18 @@ static const struct media_request_object_ops vb2_core_req_ops = {
> .release = vb2_req_release,
> };
>
> +bool vb2_core_request_has_buffers(struct media_request *req)
> +{
> + struct media_request_object *obj;
> +
> + list_for_each_entry(obj, &req->objects, list) {
> + if (obj->ops == &vb2_core_req_ops)
> + return true;
> + }
> + return false;
-ENOLOCK
> +}
> +EXPORT_SYMBOL_GPL(vb2_core_request_has_buffers);
> +
> int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb,
> struct media_request *req)
> {
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 72663c2a3ba3..e23dc028aee7 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -1158,4 +1158,6 @@ bool vb2_buffer_in_use(struct vb2_queue *q, struct vb2_buffer *vb);
> */
> int vb2_verify_memory_type(struct vb2_queue *q,
> enum vb2_memory memory, unsigned int type);
> +
> +bool vb2_core_request_has_buffers(struct media_request *req);
> #endif /* _MEDIA_VIDEOBUF2_CORE_H */
Thanks,
Mauro
