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media: usb: hackrf: 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>
CC: Antti Palosaari <crope@iki.fi>
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 17:34:57 +01:00 committed by Mauro Carvalho Chehab
parent ca44d57a70
commit 7e17d44d61
1 changed files with 3 additions and 2 deletions
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5
drivers/media/usb/hackrf/hackrf.c
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@ -753,12 +753,13 @@ static int hackrf_queue_setup(struct vb2_queue *vq,
unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
{
struct hackrf_dev *dev = vb2_get_drv_priv(vq);
unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(dev->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
if (vq->num_buffers + *nbuffers < 8)
*nbuffers = 8 - vq->num_buffers;
if (q_num_bufs + *nbuffers < 8)
*nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(dev->buffersize);