From: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
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-cisco@xxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
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;
vdev->fops = &vimc_cap_fops;
vdev->ioctl_ops = &vimc_cap_ioctl_ops;
vdev->lock = &vcap->lock;
--
2.20.1
