tree 06315fe98be8afb94797cdf14511086da86d2bbc
parent a2e2d73fa28136598e84db9d021091f1b98cbb1a
author Sean Young <sean@mess.org> 1597309729 +0200
committer Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 1598616396 +0200

media: gpio-ir-tx: spinlock is not needed to disable interrupts

During bit-banging the IR on a gpio pin, we cannot be scheduled or have
anything interrupt us, else the generated signal will be incorrect.
Therefore, we need to disable interrupts on the local cpu. This also
disables preemption.

local_irq_disable() does exactly what we need and does not require a
spinlock.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>