On Thu, Jan 18, 2024 at 9:15 PM Benjamin Gaignard
<benjamin.gaignard@xxxxxxxxxxxxx> wrote:
>
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxxxxx>
> ---
> version 2:
> - Change vdev->queue->num_buffers to vb2_get_num_buffers(vdev->queue)
> in vb2_ioctl_create_bufs().
> - Remove Fixes tag
>
> drivers/media/common/videobuf2/videobuf2-core.c | 2 +-
> drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 41a832dd1426..b6bf8f232f48 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -989,7 +989,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> bool no_previous_buffers = !q_num_bufs;
> int ret = 0;
>
> - if (q->num_buffers == q->max_num_buffers) {
> + if (q_num_bufs == q->max_num_buffers) {
> dprintk(q, 1, "maximum number of buffers already allocated\n");
> return -ENOBUFS;
> }
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 54d572c3b515..6380155d8575 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -1029,7 +1029,7 @@ int vb2_ioctl_create_bufs(struct file *file, void *priv,
> int res = vb2_verify_memory_type(vdev->queue, p->memory,
> p->format.type);
>
> - p->index = vdev->queue->num_buffers;
> + p->index = vb2_get_num_buffers(vdev->queue);
> fill_buf_caps(vdev->queue, &p->capabilities);
> validate_memory_flags(vdev->queue, p->memory, &p->flags);
> /*
> --
> 2.40.1
>
Acked-by: Tomasz Figa <tfiga@xxxxxxxxxxxx>
Best regards,
Tomasz
