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| author | David S. Miller <davem@davemloft.net> | 2012-10-09 21:14:32 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-10-09 21:14:32 +0400 |
| commit | 8dd9117cc7a021ced1c5cf177e2d44dd92b88617 (patch) | |
| tree | cad990f58f9ec6d400226dda86718fc10781416e /Documentation/DocBook/media/v4l/vidioc-streamon.xml | |
| parent | 16e310ae6ed352c4963b1f2413fcd88fa693eeda (diff) | |
| parent | 547b1e81afe3119f7daf702cc03b158495535a25 (diff) | |
| download | linux-8dd9117cc7a021ced1c5cf177e2d44dd92b88617.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Pulled mainline in order to get the UAPI infrastructure already
merged before I pull in David Howells's UAPI trees for networking.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/DocBook/media/v4l/vidioc-streamon.xml')
| -rw-r--r-- | Documentation/DocBook/media/v4l/vidioc-streamon.xml | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-streamon.xml b/Documentation/DocBook/media/v4l/vidioc-streamon.xml index 81cca4569050..716ea15e54a1 100644 --- a/Documentation/DocBook/media/v4l/vidioc-streamon.xml +++ b/Documentation/DocBook/media/v4l/vidioc-streamon.xml @@ -74,7 +74,12 @@ not transmitted yet. I/O returns to the same state as after calling stream type. This is the same as &v4l2-requestbuffers; <structfield>type</structfield>.</para> - <para>Note applications can be preempted for unknown periods right + <para>If <constant>VIDIOC_STREAMON</constant> is called when streaming +is already in progress, or if <constant>VIDIOC_STREAMOFF</constant> is called +when streaming is already stopped, then the ioctl does nothing and 0 is +returned.</para> + + <para>Note that applications can be preempted for unknown periods right before or after the <constant>VIDIOC_STREAMON</constant> or <constant>VIDIOC_STREAMOFF</constant> calls, there is no notion of starting or stopping "now". Buffer timestamps can be used to |