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Date: Fri, 22 Jul 2016 21:09:06 +0200 From: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com> To: Mauro Carvalho Chehab <mchehab@...nel.org>, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, Hans Verkuil <hansverk@...co.com>, linux-media@...r.kernel.org Cc: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com> Subject: [PATCH v2] [media] Documentation: Fix V4L2_CTRL_FLAG_VOLATILE 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. Reported-by: Dimitrios Katsaros <patcherwork@...il.com> Credit-to: Hans Verkuil <hansverk@...co.com> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com> --- v2: By Hans Verkuil <hansverk@...co.com> -Fix some syntax errors By Mauro Carvalho Chehab <mchehab@...nel.org> -Add hyperlinks Documentation/media/uapi/v4l/vidioc-queryctrl.rst | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst index 8d6e61a7284d..22475f484cb3 100644 --- a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst +++ b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst @@ -728,10 +728,12 @@ See also the examples in :ref:`control`. case the hardware calculates the gain value based on the lighting conditions which can change over time. - .. 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. + .. note:: 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 @@ -747,6 +749,7 @@ See also the examples in :ref:`control`. payload of the control. - .. row 10 + .. _FLAG_EXECUTE_ON_WRITE: - ``V4L2_CTRL_FLAG_EXECUTE_ON_WRITE`` -- 2.8.1
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