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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2018-05-21 10:54:34 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-08-31 17:07:51 +0200 |
| commit | cc6eddcd37ce6be403b5820ffd84cb84b33b653f (patch) | |
| tree | eb462214042304f56bbea9cb34127618b051b5d4 /drivers/media/dvb-frontends | |
| parent | media: v4l2-device.h: add v4l2_device_supports_requests() helper (diff) | |
| download | linux-cc6eddcd37ce6be403b5820ffd84cb84b33b653f.tar.xz linux-cc6eddcd37ce6be403b5820ffd84cb84b33b653f.zip | |
media: v4l2-dev: lock req_queue_mutex
We need to serialize streamon/off with queueing new requests.
These ioctls may trigger the cancellation of a streaming
operation, and that should not be mixed with queuing a new
request at the same time.
Finally close() needs this lock since that too can trigger the
cancellation of a streaming operation.
We take the req_queue_mutex here before any other locks since
it is a very high-level lock.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/dvb-frontends')
0 files changed, 0 insertions, 0 deletions