linux/drivers/media/cec/core
Hans Verkuil 288eceb085 media: cec-adap.c: don't use flush_scheduled_work()
For some inexplicable reason I decided to call flush_scheduled_work()
instead of cancel_delayed_work_sync(). The problem with that is that
flush_scheduled_work() waits for *all* queued scheduled work to be
completed instead of just the work itself.

This can cause a deadlock if a CEC driver also schedules work that
takes the same lock. See the comments for flush_scheduled_work() in
linux/workqueue.h.

This is exactly what has been observed a few times.

This patch simply replaces flush_scheduled_work() by
cancel_delayed_work_sync().

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: <stable@vger.kernel.org>      # for v5.8 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-09-10 14:05:10 +02:00
..
cec-adap.c media: cec-adap.c: don't use flush_scheduled_work() 2020-09-10 14:05:10 +02:00
cec-api.c cec-api: prevent leaking memory through hole in structure 2020-07-19 07:43:14 +02:00
cec-core.c
cec-notifier.c media: cec: add adap_controls_phys_addr option 2020-07-04 12:15:26 +02:00
cec-pin-error-inj.c
cec-pin-priv.h
cec-pin.c
cec-priv.h
Makefile