Re: [PATCH v14 34/56] sample: v4l: Stop direct calls to queue num_buffers field
From: Andrzej Pietrasiewicz <hidden>
Date: 2023-11-09 11:19:50
Also in:
linux-arm-msm, linux-media, linux-mediatek, linux-rockchip, linux-staging, lkml
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@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <redacted>
quoted hunk ↗ jump to hunk
--- samples/v4l/v4l2-pci-skeleton.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c index a61f94db18d9..a65aa9d1e9da 100644 --- a/samples/v4l/v4l2-pci-skeleton.c +++ b/samples/v4l/v4l2-pci-skeleton.c@@ -155,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq, unsigned int sizes[], struct device *alloc_devs[]) { struct skeleton *skel = vb2_get_drv_priv(vq); + unsigned int q_num_bufs = vb2_get_num_buffers(vq); skel->field = skel->format.field; if (skel->field == V4L2_FIELD_ALTERNATE) {@@ -167,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq, skel->field = V4L2_FIELD_TOP; } - if (vq->num_buffers + *nbuffers < 3) - *nbuffers = 3 - vq->num_buffers; + if (q_num_bufs + *nbuffers < 3) + *nbuffers = 3 - q_num_bufs; if (*nplanes) return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;
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