From: Hans Verkuil Date: Thu, 21 Feb 2019 13:47:28 +0000 (-0500) Subject: media: vimc: free vimc_cap_device when the last user disappears X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=3650a23eda89f99b964fbd63a20320fafaa73e33;p=openwrt%2Fstaging%2Fblogic.git media: vimc: free vimc_cap_device when the last user disappears 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 Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c index ea869631a3f6..54fda5b29dd0 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; vdev->fops = &vimc_cap_fops; vdev->ioctl_ops = &vimc_cap_ioctl_ops; vdev->lock = &vcap->lock;