Hi Paul, On Wed, Jun 09, 2021 at 01:54:57PM +0200, Paul Kocialkowski wrote: > A dedicated subdev notified is registered when using the helper > dedicated to sensors (v4l2_async_register_subdev_sensor_common), > but this is not the case when a driver uses v4l2_async_register_subdev > directly. Is this a problem? The notifier unregistration and cleanup functions should be safe to call on a notifier that's not been initialised or registered. The same goes for kfree with NULL argument. -- Kind regards, Sakari Ailus
