[PATCH v15 22/56] media: pci: tw686x: Stop direct calls to queue num_buffers field

[Benjamin Gaignard]

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>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx>
CC: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxxxxxxxxx>
---
 drivers/media/pci/tw686x/tw686x-video.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/media/pci/tw686x/tw686x-video.c b/drivers/media/pci/tw686x/tw686x-video.c
index 3ebf7a2c95f0..6bc6d143d18c 100644
--- a/drivers/media/pci/tw686x/tw686x-video.c
+++ b/drivers/media/pci/tw686x/tw686x-video.c
@@ -423,6 +423,7 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
 			      unsigned int sizes[], struct device *alloc_devs[])
 {
 	struct tw686x_video_channel *vc = vb2_get_drv_priv(vq);
+	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 	unsigned int szimage =
 		(vc->width * vc->height * vc->format->depth) >> 3;
 
@@ -430,8 +431,8 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
 	 * Let's request at least three buffers: two for the
 	 * DMA engine and one for userspace.
 	 */
-	if (vq->num_buffers + *nbuffers < 3)
-		*nbuffers = 3 - vq->num_buffers;
+	if (q_num_bufs + *nbuffers < 3)
+		*nbuffers = 3 - q_num_bufs;
 
 	if (*nplanes) {
 		if (*nplanes != 1 || sizes[0] < szimage)
-- 
2.39.2