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| author | Tomasz Figa <tfiga@chromium.org> | 2019-06-12 12:36:48 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-06-21 23:29:56 +0300 |
| commit | 13d93380fca826e49c42e8d83fc8a077cabbe6b8 (patch) | |
| tree | e663f9ad21ec99aaab3ca324eb597c6d5a36cd5d /Documentation/media/uapi/v4l/vidioc-g-fmt.rst | |
| parent | ababd7612321bbe89abc87c607ca8d70702d9e56 (diff) | |
| download | linux-13d93380fca826e49c42e8d83fc8a077cabbe6b8.tar.xz | |
media: Clarify the meaning of file descriptors in VIDIOC_DQBUF
When the application calls VIDIOC_DQBUF with the DMABUF memory type, the
v4l2_buffer structure (or v4l2_plane structures) are filled with DMA-buf
file descriptors. However, the current documentation does not explain
whether those are new file descriptors referring to the same DMA-bufs or
just the same integers as passed to VIDIOC_QBUF back in time. Clarify
the documentation that it's the latter.
Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'Documentation/media/uapi/v4l/vidioc-g-fmt.rst')
0 files changed, 0 insertions, 0 deletions