Commit ba53e3b9 authored by Benjamin Gaignard's avatar Benjamin Gaignard Committed by Mauro Carvalho Chehab
Browse files

media: pci: tw686x: 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: default avatarBenjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: default avatarAndrzej Pietrasiewicz <andrzej.p@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent cf605a01

drivers/media/pci/tw686x/tw686x-video.c

+3 −2
Original line number Diff line number Diff line
@@ -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)