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media: v4l2-subdev.rst: correct information about v4l2 events 

Remove description of non-existing v4l2_subdev.nevents and replace the
undefined flag V4L2_SUBDEV_USES_EVENTS by the correct flag
V4L2_SUBDEV_FL_HAS_EVENTS, which is already documented in v4l2_subdev.flags

Fixes: commit 02adb1cc76 ("[media] v4l: subdev: Events support")
Signed-off-by: Michael Rodin <mrodin@de.adit-jv.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Michael Rodin 2020-05-27 18:21:32 +02:00 committed by Mauro Carvalho Chehab
parent cc8c0363dd
commit 5be5f41dd7
1 changed files with 1 additions and 2 deletions
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Documentation/driver-api/media/v4l2-subdev.rst
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@ -319,8 +319,7 @@ The device node handles a subset of the V4L2 API.
events can also be reported by one (or several) V4L2 device nodes.
Sub-device drivers that want to use events need to set the
``V4L2_SUBDEV_USES_EVENTS`` :c:type:`v4l2_subdev`.flags and initialize
:c:type:`v4l2_subdev`.nevents to events queue depth before registering
``V4L2_SUBDEV_FL_HAS_EVENTS`` :c:type:`v4l2_subdev`.flags before registering
the sub-device. After registration events can be queued as usual on the
:c:type:`v4l2_subdev`.devnode device node.