Re: [PATCH 6/9] media: rcar_drif.c: set lock before calling vb2_queue_init()

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On Mon, Sep 09, 2024 at 04:55:32PM +0200, Hans Verkuil wrote:
> On 09/09/2024 16:51, Laurent Pinchart wrote:
> > On Mon, Sep 02, 2024 at 04:04:52PM +0200, Hans Verkuil wrote:
> >> The vb2_queue_init() will expect the vb2_queue lock pointer to be set in
> >> the future. So for those drivers that set the lock later, move it up to
> >> before the vb2_queue_init() call.
> > 
> > The commit message doesn't match the change below, you're moving the
> > lock down, not up.
> 
> Actually, I am moving it up, as in 'set earlier', but in this case it is
> a bit confusing in the patch.

Oops indeed, I thought both changes were in the same function.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>

> >> Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
> >> Cc: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@xxxxxxxxxxxxxx>
> >> Cc: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
> >> ---
> >>  drivers/media/platform/renesas/rcar_drif.c | 2 +-
> >>  1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
> >> index f21d05054341..5d3109940ded 100644
> >> --- a/drivers/media/platform/renesas/rcar_drif.c
> >> +++ b/drivers/media/platform/renesas/rcar_drif.c
> >> @@ -1071,7 +1071,6 @@ static int rcar_drif_sdr_register(struct rcar_drif_sdr *sdr)
> >>  	sdr->vdev->release = video_device_release;
> >>  	sdr->vdev->lock = &sdr->v4l2_mutex;
> >>  	sdr->vdev->queue = &sdr->vb_queue;
> >> -	sdr->vdev->queue->lock = &sdr->vb_queue_mutex;
> >>  	sdr->vdev->ctrl_handler = &sdr->ctrl_hdl;
> >>  	sdr->vdev->v4l2_dev = &sdr->v4l2_dev;
> >>  	sdr->vdev->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_TUNER |
> >> @@ -1316,6 +1315,7 @@ static int rcar_drif_sdr_probe(struct rcar_drif_sdr *sdr)
> >>  	sdr->vb_queue.ops = &rcar_drif_vb2_ops;
> >>  	sdr->vb_queue.mem_ops = &vb2_vmalloc_memops;
> >>  	sdr->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
> >> +	sdr->vb_queue.lock = &sdr->vb_queue_mutex;
> >>  
> >>  	/* Init videobuf2 queue */
> >>  	ret = vb2_queue_init(&sdr->vb_queue);

-- 
Regards,

Laurent Pinchart




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