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Diffstat (limited to 'Documentation/driver-api/media/v4l2-subdev.rst')
| -rw-r--r-- | Documentation/driver-api/media/v4l2-subdev.rst | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/Documentation/driver-api/media/v4l2-subdev.rst b/Documentation/driver-api/media/v4l2-subdev.rst index e463ab4a3413..327d444f34dc 100644 --- a/Documentation/driver-api/media/v4l2-subdev.rst +++ b/Documentation/driver-api/media/v4l2-subdev.rst @@ -198,12 +198,11 @@ picked up by bridge drivers. Asynchronous sub-device notifiers ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Bridge drivers in turn have to register a notifier object. This is -performed using the :c:func:`v4l2_async_nf_register` call. To -unregister the notifier the driver has to call -:c:func:`v4l2_async_nf_unregister`. The former of the two functions -takes two arguments: a pointer to struct :c:type:`v4l2_device` and a -pointer to struct :c:type:`v4l2_async_notifier`. +Bridge drivers in turn have to register a notifier object. This is performed +using the :c:func:`v4l2_async_nf_register` call. To unregister the notifier the +driver has to call :c:func:`v4l2_async_nf_unregister`. Before releasing memory +of an unregister notifier, it must be cleaned up by calling +:c:func:`v4l2_async_nf_cleanup`. Before registering the notifier, bridge drivers must do two things: first, the notifier must be initialized using the :c:func:`v4l2_async_nf_init`. Second, |