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| author | Ezequiel Garcia <ezequiel@collabora.com> | 2018-06-15 22:07:31 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-07-04 15:03:04 +0300 |
| commit | 1d120649a81e5fc71151cbe8d6d82c58f7777160 (patch) | |
| tree | bfb27fd55be30f2b8f48567c04973bcce01f3eb6 /drivers/media/usb/stk1160/stk1160-v4l.c | |
| parent | a4273abcd3e40f7e8fe9c5347dea1e0a6b9ccadb (diff) | |
| download | linux-1d120649a81e5fc71151cbe8d6d82c58f7777160.tar.xz | |
media: m2m-deinterlace: Implement wait_prepare and wait_finish
This driver is currently specifying a video_device lock,
which means it is protecting all the ioctls (including
queue ioctls) with a single mutex.
It's therefore straightforward to implement wait_prepare
and wait_finish, by explicitly setting the vb2_queue lock.
Having these callbacks releases the queue lock while blocking,
which improves latency by allowing for example streamoff
or qbuf operations while waiting in dqbuf.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/usb/stk1160/stk1160-v4l.c')
0 files changed, 0 insertions, 0 deletions