Hans Verkuil aa57725e2d media: cec-pin: fix interrupt en/disable handling ... commit 713bdfa10b5957053811470d298def9537d9ff13 upstream. The en/disable_irq() functions keep track of the 'depth': i.e. if interrupts are disabled twice, then it needs to enable_irq() calls to enable them again. The cec-pin framework didn't take this into accound and could disable irqs multiple times, and it expected that a single enable_irq() would enable them again. Move all calls to en/disable_irq() to the kthread where it is easy to keep track of the current irq state and ensure that multiple en/disable_irq calls never happen. If interrupts where disabled twice, then they would never turn on again, leaving the CEC adapter in a dead state. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Fixes: 865463fc03 (media: cec-pin: add error injection support) Cc: <stable@vger.kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-01-27 10:53:43 +01:00
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core	media: cec-pin: fix interrupt en/disable handling	2022-01-27 10:53:43 +01:00
i2c	…
platform	media: tegra-cec: Handle errors of clk_prepare_enable()	2021-09-18 13:40:25 +02:00
usb	…
Kconfig	…
Makefile	…