alistair23-linux/drivers/media/v4l2-core
Sakari Ailus 92539d3eda media: v4l: event: Add subscription to list before calling "add" operation
Patch ad608fbcf1 changed how events were subscribed to address an issue
elsewhere. As a side effect of that change, the "add" callback was called
before the event subscription was added to the list of subscribed events,
causing the first event queued by the add callback (and possibly other
events arriving soon afterwards) to be lost.

Fix this by adding the subscription to the list before calling the "add"
callback, and clean up afterwards if that fails.

Fixes: ad608fbcf1 ("media: v4l: event: Prevent freeing event subscriptions while accessed")

Reported-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: stable@vger.kernel.org (for 4.14 and up)
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-11-06 07:07:40 -05:00
..
Kconfig
Makefile
tuner-core.c media: v4l2-mc: get rid of global pad indexes 2018-09-17 13:16:19 -04:00
v4l2-async.c media: v4l2-core: cleanup coding style at V4L2 async/fwnode 2018-10-05 06:49:16 -04:00
v4l2-clk.c
v4l2-common.c media: v4l: subdev: Add a function to set an I²C sub-device's name 2018-09-17 15:17:22 -04:00
v4l2-compat-ioctl32.c media: v4l2-compat-ioctl32.c: add missing documentation for a field 2018-09-24 09:50:06 -04:00
v4l2-ctrls.c media: v4l: fix uapi mpeg slice params definition 2018-11-06 05:07:53 -05:00
v4l2-dev.c media: v4l2-dev: lock req_queue_mutex 2018-08-31 11:07:51 -04:00
v4l2-device.c media updates for v4.20-rc1 2018-10-31 10:53:29 -07:00
v4l2-dv-timings.c media: hdmi.h: rename ADOBE_RGB to OPRGB and ADOBE_YCC to OPYCC 2018-09-24 09:28:41 -04:00
v4l2-event.c media: v4l: event: Add subscription to list before calling "add" operation 2018-11-06 07:07:40 -05:00
v4l2-fh.c media: v4l: event: Prevent freeing event subscriptions while accessed 2018-10-03 06:32:51 -04:00
v4l2-flash-led-class.c media: use strscpy() instead of strlcpy() 2018-09-11 13:32:17 -04:00
v4l2-fwnode.c media: v4l2-fwnode: cleanup functions that parse endpoints 2018-10-05 06:49:24 -04:00
v4l2-ioctl.c media updates for v4.20-rc1 2018-10-31 10:53:29 -07:00
v4l2-mc.c media: v4l2-mc: add print messages when media graph fails 2018-09-17 13:16:19 -04:00
v4l2-mem2mem.c media: Rename vb2_m2m_request_queue -> v4l2_m2m_request_queue 2018-11-06 05:24:22 -05:00
v4l2-subdev.c media updates for v4.20-rc1 2018-10-31 10:53:29 -07:00
v4l2-trace.c
videobuf-core.c
videobuf-dma-contig.c
videobuf-dma-sg.c
videobuf-vmalloc.c