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Groups > linux.kernel > #1448614
| From | Hans Verkuil <hverkuil@xs4all.nl> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] [media] Documentation: Fix V4L2_CTRL_FLAG_VOLATILE |
| Date | 2016-07-22 16:30 +0200 |
| Message-ID | <rXJCG-6Z6-17@gated-at.bofh.it> (permalink) |
| References | <rXJjj-6SA-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 07/22/2016 04:07 PM, Ricardo Ribalda Delgado wrote: > 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. That should start with `` not ` (i.e. a double ` instead of a single `). > + Setting a new value for a volatile contol will never trigger a s/contol/control/ Also emphasize 'never': s/never/*never*/ > + ``V4L2_EVENT_CTRL_CH_VALUE`` event. > > - .. row 9 > > Regards, Hans
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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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