| commit | 1451b93223bbe3b4e9c91fca6b451d00667c5bf0 | [log] [tgz] |
|---|---|---|
| author | Sean Young <sean@mess.org> | Thu Aug 13 11:08:49 2020 +0200 |
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | Fri Aug 28 14:06:36 2020 +0200 |
| tree | 06315fe98be8afb94797cdf14511086da86d2bbc | |
| parent | a2e2d73fa28136598e84db9d021091f1b98cbb1a [diff] |
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>