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Groups > linux.kernel > #1448608
| From | Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH] [media] Documentation: Fix V4L2_CTRL_FLAG_VOLATILE |
| Date | 2016-07-22 16:10 +0200 |
| Message-ID | <rXJjj-6SA-5@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
V4L2_CTRL_FLAG_VOLATILE behaviour when V4L2_CTRL_FLAG_EXECUTE_ON_WRITE
is set was not properly explained.
Reported-by: Dimitrios Katsaros <patcherwork@gmail.com>
Credit-to: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
---
Documentation/media/uapi/v4l/vidioc-queryctrl.rst | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst
index 8d6e61a7284d..3a30d6cf70b4 100644
--- a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst
+++ b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst
@@ -728,10 +728,10 @@ 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 `V4L2_CTRL_FLAG_EXECUTE_ON_WRITE`` flag (see below) is also set.
+ Setting a new value for a volatile contol will never trigger a
+ ``V4L2_EVENT_CTRL_CH_VALUE`` event.
- .. row 9
--
2.8.1
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[PATCH] [media] Documentation: Fix V4L2_CTRL_FLAG_VOLATILE Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> - 2016-07-22 16:10 +0200 Re: [PATCH] [media] Documentation: Fix V4L2_CTRL_FLAG_VOLATILE Hans Verkuil <hverkuil@xs4all.nl> - 2016-07-22 16:30 +0200
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