Symbol: __v4l2_async_nf_unregister
drivers/media/v4l2-core/v4l2-async.c
664
__v4l2_async_nf_unregister(notifier);
drivers/media/v4l2-core/v4l2-async.c
895
__v4l2_async_nf_unregister(sd->subdev_notifier);