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media: usb: airspy: Stop direct calls to queue num_buffers field

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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>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Benjamin Gaignard 2023-11-09 17:34:55 +01:00 committed by Mauro Carvalho Chehab
parent ff2560f026
commit 912472fd07
1 changed files with 3 additions and 2 deletions
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5
drivers/media/usb/airspy/airspy.c
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@ -482,12 +482,13 @@ static int airspy_queue_setup(struct vb2_queue *vq,
unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
{ {
struct airspy *s = vb2_get_drv_priv(vq); struct airspy *s = vb2_get_drv_priv(vq);
unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers); dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */ /* Need at least 8 buffers */
if (vq->num_buffers + *nbuffers < 8) if (q_num_bufs + *nbuffers < 8)
*nbuffers = 8 - vq->num_buffers; *nbuffers = 8 - q_num_bufs;
*nplanes = 1; *nplanes = 1;
sizes[0] = PAGE_ALIGN(s->buffersize); sizes[0] = PAGE_ALIGN(s->buffersize);