Hi Hans,
Thank you for the patch.
On Thu, Feb 21, 2019 at 03:21:48PM +0100, Hans Verkuil wrote:
> Don't free vimc_cap_device immediately, instead do this
> in the video_device release function which is called when the
> last user closes the video device. Only then is it safe to
> free the memory.
>
> Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
> ---
> drivers/media/platform/vimc/vimc-capture.c | 13 ++++++++++---
> 1 file changed, 10 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/platform/vimc/vimc-capture.c
> b/drivers/media/platform/vimc/vimc-capture.c
> index ea869631a3f6..3d433361d297 100644
> --- a/drivers/media/platform/vimc/vimc-capture.c
> +++ b/drivers/media/platform/vimc/vimc-capture.c
> @@ -338,6 +338,15 @@ static const struct media_entity_operations
> vimc_cap_mops = {
> .link_validate = vimc_link_validate,
> };
>
> +static void vimc_cap_release(struct video_device *vdev)
> +{
> + struct vimc_cap_device *vcap = container_of(vdev, struct
> vimc_cap_device,
> + vdev);
> +
> + vimc_pads_cleanup(vcap->ved.pads);
> + kfree(vcap);
> +}
> +
> static void vimc_cap_comp_unbind(struct device *comp, struct device *master,
> void *master_data)
> {
> @@ -348,8 +357,6 @@ static void vimc_cap_comp_unbind(struct device *comp,
> struct device *master,
> vb2_queue_release(&vcap->queue);
> media_entity_cleanup(ved->ent);
> video_unregister_device(&vcap->vdev);
> - vimc_pads_cleanup(vcap->ved.pads);
> - kfree(vcap);
> }
>
> static void *vimc_cap_process_frame(struct vimc_ent_device *ved,
> @@ -467,7 +474,7 @@ static int vimc_cap_comp_bind(struct device *comp, struct
> device *master,
> vdev = &vcap->vdev;
> vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
> vdev->entity.ops = &vimc_cap_mops;
> - vdev->release = video_device_release_empty;
> + vdev->release = vimc_cap_release;
Another use of video_device_release_empty gone, only 80+ to go ;-)
Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> vdev->fops = &vimc_cap_fops;
> vdev->ioctl_ops = &vimc_cap_ioctl_ops;
> vdev->lock = &vcap->lock;
--
Regards,
Laurent Pinchart
