[media] Documentation: Fix V4L2_CTRL_FLAG_VOLATILE (f22bede3) · Commits · 戴 / test

V4L2_CTRL_FLAG_VOLATILE behaviour when V4L2_CTRL_FLAG_EXECUTE_ON_WRITE is set was not properly explained. Also set some hyperlink to ease the Documentation browsing. Credit-to: Hans Verkuil <hansverk@cisco.com> [mchehab@s-opensource.com: fix a trivial merge conflict] Reported-by:

Dimitrios Katsaros <patcherwork@gmail.com> Signed-off-by:

Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by:

Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:

Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/uapi/v4l/vidioc-queryctrl.rst

+7 −4

Original line number	Diff line number	Diff line
		@@ -754,10 +754,12 @@ See also the examples in :ref:`control`.

		.. note::

		Setting a new value for a volatile control will have no
		effect and no ``V4L2_EVENT_CTRL_CH_VALUE`` will be sent, unless
		the ``V4L2_CTRL_FLAG_EXECUTE_ON_WRITE`` flag (see below) is
		also set. Otherwise the new value will just be ignored.
		Setting a new value for a volatile control will be ignored
		unless
		:ref:`V4L2_CTRL_FLAG_EXECUTE_ON_WRITE <FLAG_EXECUTE_ON_WRITE>`
		is also set.
		Setting a new value for a volatile control will never trigger a
		:ref:`V4L2_EVENT_CTRL_CH_VALUE <ctrl-changes-flags>` event.

		- .. row 9

		@@ -773,6 +775,7 @@ See also the examples in :ref:`control`.
		payload of the control.

		- .. row 10
		.. _FLAG_EXECUTE_ON_WRITE:

		- ``V4L2_CTRL_FLAG_EXECUTE_ON_WRITE``

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