Two patches that fix two serious issues in the cec core framework. The first will cause drivers that use the pin framework to stop working in certain circumstances. Currently it affects only the cec-gpio driver. The second is a deadlock that can hit when closing the last open filehandle of a driver that has an invalid physical address. Again, this primarily hits cec-gpio, but I believe it can also happen for other CEC drivers. This situation will typically occur when monitoring the CEC traffic with cec-ctl --monitor and then stopping cec-ctl with Ctrl-C. While these patches should be backported, I decided to not to send them out for 5.16 since I would like to give it more time for testing. Note also that a third issue was found with cec-pin where a atomic operation can sleep. See: https://lore.kernel.org/linux-media/a06e7c55-f25d-8339-faea-9be6d31d1c87@xxxxxxxxx/T/#u The issue appears to be in the gpio and/or pinctrl framework. Regards, Hans Hans Verkuil (2): cec-pin: fix interrupt en/disable handling cec: fix a deadlock situation drivers/media/cec/core/cec-adap.c | 38 +++++++++++++++++-------------- drivers/media/cec/core/cec-api.c | 6 +++++ drivers/media/cec/core/cec-core.c | 3 +++ drivers/media/cec/core/cec-pin.c | 31 ++++++++++++++----------- include/media/cec.h | 11 +++++++-- 5 files changed, 57 insertions(+), 32 deletions(-) -- 2.33.0
