media: renesas: Stop direct calls to queue num_buffers field

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@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
index 292c5bf9e50c3b2f165b5d824e99347abaaaf1ac..f21d050543419424794abe1a8559617d70a5126a 100644 (file)
--- a/drivers/media/platform/renesas/rcar_drif.c
+++ b/drivers/media/platform/renesas/rcar_drif.c
@@ -424,10 +424,11 @@ static int rcar_drif_queue_setup(struct vb2_queue *vq,
                        unsigned int sizes[], struct device *alloc_devs[])
 {
        struct rcar_drif_sdr *sdr = vb2_get_drv_priv(vq);
+       unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 
        /* Need at least 16 buffers */
-       if (vq->num_buffers + *num_buffers < 16)
-               *num_buffers = 16 - vq->num_buffers;
+       if (q_num_bufs + *num_buffers < 16)
+               *num_buffers = 16 - q_num_bufs;
 
        *num_planes = 1;
        sizes[0] = PAGE_ALIGN(sdr->fmt->buffersize);