Re: [PATCH v14 33/56] touchscreen: sur40: Stop direct calls to queue num_buffers field

[Andrzej Pietrasiewicz]

W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> 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>
> Acked-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>

Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx>

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