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| author | Luca Ceresoli <luca@lucaceresoli.net> | 2018-03-08 13:26:22 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-03-21 17:01:21 +0100 |
| commit | 3f97df91a189ac84711467a687bef69dfd88b53c (patch) | |
| tree | d6a803a5027695a01b9d55405e2f71b6a5b3404a /include/media/videobuf2-core.h | |
| parent | media: vb2-core: document the REQUEUEING state (diff) | |
| download | linux-3f97df91a189ac84711467a687bef69dfd88b53c.tar.xz linux-3f97df91a189ac84711467a687bef69dfd88b53c.zip | |
media: vb2-core: vb2_ops: document non-interrupt-context calling
Driver writers can benefit in knowing if/when callbacks are called in
interrupt context. But it is not completely obvious here, so document
it.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/media/videobuf2-core.h')
| -rw-r--r-- | include/media/videobuf2-core.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index f20000887d3c..f6818f732f34 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -296,6 +296,9 @@ struct vb2_buffer { /** * struct vb2_ops - driver-specific callbacks. * + * These operations are not called from interrupt context except where + * mentioned specifically. + * * @queue_setup: called from VIDIOC_REQBUFS() and VIDIOC_CREATE_BUFS() * handlers before memory allocation. It can be called * twice: if the original number of requested buffers |