Re: [PATCH v11 39/56] touchscreen: sur40: Stop direct calls to queue num_buffers field

Hans Verkuil
2023-10-16T08:22:50Z

On 12/10/2023 13:46, Benjamin Gaignard wrote:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> CC: Henrik Rydberg <rydberg@bitmath.org>
> ---
> drivers/input/touchscreen/sur40.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
> index 8ddb3f7d307a..e7d2a52169a0 100644
> --- a/drivers/input/touchscreen/sur40.c
> +++ b/drivers/input/touchscreen/sur40.c
> @@ -847,9 +847,10 @@ static int sur40_queue_setup(struct vb2_queue *q,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct sur40_state *sur40 = vb2_get_drv_priv(q);
> + unsigned int q_num_bufs = vb2_get_num_buffers(q);
>
> - if (q->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - q->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;

This can just be dropped since this driver sets min_buffers_needed to 3.

Regards,

Hans

>
> if (*nplanes)
> return sizes[0] < sur40->pix_fmt.sizeimage ? -EINVAL : 0;