Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
is called. This will unregister the sub-device from the bridge driver. It is
safe to call this even if the sub-device was never registered.
is called. This will unregister the sub-device from the bridge driver. It is
safe to call this even if the sub-device was never registered.
+You need to do this because when the bridge driver destroys the i2c adapter
+the remove() callbacks are called of the i2c devices on that adapter.
+After that the corresponding v4l2_subdev structures are invalid, so they
+have to be unregistered first. Calling v4l2_device_unregister_subdev(sd)
+from the remove() callback ensures that this is always done correctly.
+
The bridge driver also has some helper functions it can use:
The bridge driver also has some helper functions it can use: