On Tue, Sep 26, 2017 at 01:25:26AM +0300, Sakari Ailus wrote: > Registering a notifier has required the knowledge of struct v4l2_device > for the reason that sub-devices generally are registered to the > v4l2_device (as well as the media device, also available through > v4l2_device). > > This information is not available for sub-device drivers at probe time. > > What this patch does is that it allows registering notifiers without > having v4l2_device around. Instead the sub-device pointer is stored in the > notifier. Once the sub-device of the driver that registered the notifier > is registered, the notifier will gain the knowledge of the v4l2_device, > and the binding of async sub-devices from the sub-device driver's notifier > may proceed. > > The root notifier's complete callback is only called when all sub-device > notifiers are completed. This paragraph is actually no longer true. I changed it to: The complete callbacks will be called only when the v4l2_device is available and no notifier has pending sub-devices to bind. -- Sakari Ailus e-mail: sakari.ailus@xxxxxx
