| Message ID | 20231031163104.112469-24-benjamin.gaignard@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add DELETE_BUF ioctl | expand |
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 <andrzej.p@collabora.com> > CC: Sergey Kozlov <serjk@netup.ru> > CC: Abylay Ospan <aospan@netup.ru> > --- > drivers/media/pci/cx18/cx18-streams.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c > index 597472754c4c..cfbc4a907802 100644 > --- a/drivers/media/pci/cx18/cx18-streams.c > +++ b/drivers/media/pci/cx18/cx18-streams.c > @@ -104,6 +104,7 @@ static int cx18_queue_setup(struct vb2_queue *vq, > unsigned int *nbuffers, unsigned int *nplanes, > unsigned int sizes[], struct device *alloc_devs[]) > { > + unsigned int q_num_bufs = vb2_get_num_buffers(vq); > struct cx18_stream *s = vb2_get_drv_priv(vq); > struct cx18 *cx = s->cx; > unsigned int szimage; > @@ -121,8 +122,8 @@ static int cx18_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)
diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c index 597472754c4c..cfbc4a907802 100644 --- a/drivers/media/pci/cx18/cx18-streams.c +++ b/drivers/media/pci/cx18/cx18-streams.c @@ -104,6 +104,7 @@ static int cx18_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { + unsigned int q_num_bufs = vb2_get_num_buffers(vq); struct cx18_stream *s = vb2_get_drv_priv(vq); struct cx18 *cx = s->cx; unsigned int szimage; @@ -121,8 +122,8 @@ static int cx18_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)
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> CC: Sergey Kozlov <serjk@netup.ru> CC: Abylay Ospan <aospan@netup.ru> --- drivers/media/pci/cx18/cx18-streams.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)