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| author | Chen-Yu Tsai <wenst@chromium.org> | 2021-12-09 07:29:25 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-01-23 21:18:42 +0100 |
| commit | 2092f0def1603cb6b735ec37783656d7089fe429 (patch) | |
| tree | 1ff4138fe320924a1efd656bab4413df0cf29403 /Documentation/userspace-api | |
| parent | 57c1d5de7d1527c04b5e58089260064b63306b35 (diff) | |
| download | linux-2092f0def1603cb6b735ec37783656d7089fe429.tar.bz2 | |
media: docs: vidioc-dqbuf: State all remaining fields are filled by driver
The specification for VIDIOC_DQBUF is slightly ambiguous on what fields
of |struct v4l2_buffer| is filled by the driver.
Reword it so things are clear: the driver fills in all remaining fields
not specified to be filled in by userspace applications.
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'Documentation/userspace-api')
| -rw-r--r-- | Documentation/userspace-api/media/v4l/vidioc-qbuf.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst b/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst index 77e0747a6d28..e4b3d9beb9ab 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst @@ -125,7 +125,7 @@ Applications call the ``VIDIOC_DQBUF`` ioctl to dequeue a filled queue. They just set the ``type``, ``memory`` and ``reserved`` fields of a struct :c:type:`v4l2_buffer` as above, when ``VIDIOC_DQBUF`` is called with a pointer to this structure the driver -fills the remaining fields or returns an error code. The driver may also +fills all remaining fields or returns an error code. The driver may also set ``V4L2_BUF_FLAG_ERROR`` in the ``flags`` field. It indicates a non-critical (recoverable) streaming error. In such case the application may continue as normal, but should be aware that data in the dequeued |