linux/drivers/media/v4l2-core
Hans Verkuil cc6eddcd37 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>
2018-08-31 11:07:51 -04:00
..
Kconfig media: Remove depends on HAS_DMA in case of platform dependency 2018-05-28 16:17:08 -04:00
Makefile media: v4l2-core: get rid of videobuf-dvb 2018-05-04 10:57:31 -04:00
tuner-core.c media: add tuner standby op, use where needed 2018-03-21 12:05:39 -04:00
v4l2-async.c media: v4l2-async: simplify v4l2_async_subdev structure 2017-12-29 07:14:28 -05:00
v4l2-clk.c
v4l2-common.c media: v4l: common: Remove v4l2_find_nearest_format 2018-03-21 11:21:33 -04:00
v4l2-compat-ioctl32.c media: v4l2-compat-ioctl32: better document the code 2018-04-20 08:24:13 -04:00
v4l2-ctrls.c media: v4l2-ctrl: Add control for VP9 profile 2018-07-04 09:32:22 -04:00
v4l2-dev.c media: v4l2-dev: lock req_queue_mutex 2018-08-31 11:07:51 -04:00
v4l2-device.c media: mark entity-intf links as IMMUTABLE 2018-07-04 08:40:49 -04:00
v4l2-dv-timings.c media: v4l2-dv-timings: Introduce v4l2_calc_timeperframe helper 2018-08-31 10:02:45 -04:00
v4l2-event.c Convert v4l2 event to struct_size 2018-06-12 16:19:22 -07:00
v4l2-fh.c
v4l2-flash-led-class.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
v4l2-fwnode.c media updates for v4.19-rc1 2018-08-15 18:29:14 -07:00
v4l2-ioctl.c media: v4l2-dev: lock req_queue_mutex 2018-08-31 11:07:51 -04:00
v4l2-mc.c media: v4l2-core: v4l2-mc: Add SPDX license identifier 2018-02-26 07:42:03 -05:00
v4l2-mem2mem.c media: v4l2-mem2mem: add descriptions to MC fields 2018-08-07 06:10:16 -04:00
v4l2-subdev.c media: v4l: Add support for STD ioctls on subdev nodes 2018-07-24 17:39:28 -04:00
v4l2-trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
videobuf-core.c MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00
videobuf-dma-contig.c MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00
videobuf-dma-sg.c treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
videobuf-vmalloc.c MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00