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.ai...@iki.fi
