diff options
| -rw-r--r-- | Documentation/DocBook/media/v4l/vidioc-create-bufs.xml | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml b/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml index a2474ecb574a..5e73b1c8d095 100644 --- a/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml +++ b/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml | |||
| @@ -97,7 +97,13 @@ information.</para> | |||
| 97 | <row> | 97 | <row> |
| 98 | <entry>__u32</entry> | 98 | <entry>__u32</entry> |
| 99 | <entry><structfield>count</structfield></entry> | 99 | <entry><structfield>count</structfield></entry> |
| 100 | <entry>The number of buffers requested or granted.</entry> | 100 | <entry>The number of buffers requested or granted. If count == 0, then |
| 101 | <constant>VIDIOC_CREATE_BUFS</constant> will set <structfield>index</structfield> | ||
| 102 | to the current number of created buffers, and it will check the validity of | ||
| 103 | <structfield>memory</structfield> and <structfield>format.type</structfield>. | ||
| 104 | If those are invalid -1 is returned and errno is set to &EINVAL;, | ||
| 105 | otherwise <constant>VIDIOC_CREATE_BUFS</constant> returns 0. It will | ||
| 106 | never set errno to &EBUSY; in this particular case.</entry> | ||
| 101 | </row> | 107 | </row> |
| 102 | <row> | 108 | <row> |
| 103 | <entry>__u32</entry> | 109 | <entry>__u32</entry> |