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media: gpio-ir-tx: Driver does not behave with PREEMPT_RT

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This driver bit-bangs a signal with interrupts disabled. The signal can
last for up to half a second (IR_MAX_DURATION).

A much better way of transmitting IR is using the pwm-ir-tx driver,
which does not disable interrupts.

Signed-off-by: Sean Young <sean@mess.org>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Sean Young 2024-09-20 11:03:25 +02:00 • committed by Hans Verkuil
parent 67cefecf2a
commit 2af8dbd4ab
1 changed files with 1 additions and 0 deletions
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1
drivers/media/rc/Kconfig
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@ -184,6 +184,7 @@ config IR_GPIO_TX
tristate "GPIO IR Bit Banging Transmitter"
depends on LIRC
depends on (OF && GPIOLIB) || COMPILE_TEST
depends on !PREEMPT_RT
help
Say Y if you want to a GPIO based IR transmitter. This is a
bit banging driver.