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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2016-03-22 07:30:28 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-04-20 16:04:46 -0300 |
| commit | 0c53fee973a9adfa4ad21433d397adae12b2120b (patch) | |
| tree | 8fe61e1452c8740669c68856ce5cecd8175d847c /Documentation/DocBook | |
| parent | 0be67c40d4e8c5b3d96581680fa797f28a3025ec (diff) | |
| download | lwn-0c53fee973a9adfa4ad21433d397adae12b2120b.tar.gz lwn-0c53fee973a9adfa4ad21433d397adae12b2120b.zip | |
[media] vidioc-enum-dv-timings.xml: explicitly state that pad and reserved should be zeroed
The ENUM_DV_TIMINGS documentation did not clearly state that the pad and reserved
fields should be zeroed (pad only when used with a video device node).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'Documentation/DocBook')
| -rw-r--r-- | Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml index 6e3cadd4e1f9..70ca76d1e6d2 100644 --- a/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml +++ b/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml @@ -61,8 +61,9 @@ of known supported timings. Call &VIDIOC-DV-TIMINGS-CAP; to check if it also sup standards or even custom timings that are not in this list.</para> <para>To query the available timings, applications initialize the -<structfield>index</structfield> field and zero the reserved array of &v4l2-enum-dv-timings; -and call the <constant>VIDIOC_ENUM_DV_TIMINGS</constant> ioctl on a video node with a +<structfield>index</structfield> field, set the <structfield>pad</structfield> field to 0, +zero the reserved array of &v4l2-enum-dv-timings; and call the +<constant>VIDIOC_ENUM_DV_TIMINGS</constant> ioctl on a video node with a pointer to this structure. Drivers fill the rest of the structure or return an &EINVAL; when the index is out of bounds. To enumerate all supported DV timings, applications shall begin at index zero, incrementing by one until the |