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linux/drivers/leds/trigger
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Sebastian Andrzej Siewior 97b31c1f8e leds: trigger: Disable CPU trigger on PREEMPT_RT 
The CPU trigger is invoked on ARM from CPU-idle. That trigger later
invokes led_trigger_event() which may invoke the callback of the actual driver.
That driver can acquire a spinlock_t which is okay on kernel without
PREEMPT_RT. On a PREEMPT_RT enabled kernel this lock is turned into a
sleeping lock and must not be acquired with disabled interrupts.

Disable the CPU trigger on PREEMPT_RT.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lkml.kernel.org/r/20210924111501.m57cwwn7ahiyxxdd@linutronix.de
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-10-13 20:07:57 +02:00
..
Kconfig leds: trigger: Disable CPU trigger on PREEMPT_RT 2021-10-13 20:07:57 +02:00
ledtrig-activity.c kernel.h: split out panic and oops helpers 2021-07-01 11:06:04 -07:00
ledtrig-audio.c leds: trigger: audio: Add an activate callback to ensure the initial brightness is set 2021-08-03 23:57:17 +02:00
ledtrig-backlight.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ledtrig-camera.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ledtrig-cpu.c leds: trigger: ledtrig-cpu: Fix incorrectly documented param 'ledevt' 2021-05-28 11:38:53 +02:00
ledtrig-default-on.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ledtrig-disk.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ledtrig-gpio.c leds: trigger: gpio: Avoid warning on update of inverted 2020-07-12 10:06:38 +02:00
ledtrig-heartbeat.c kernel.h: split out panic and oops helpers 2021-07-01 11:06:04 -07:00
ledtrig-mtd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ledtrig-netdev.c leds: trigger: netdev: fix handling on interface rename 2019-11-03 18:10:12 +01:00
ledtrig-oneshot.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ledtrig-panic.c kernel.h: split out panic and oops helpers 2021-07-01 11:06:04 -07:00
ledtrig-pattern.c leds: trigger: pattern: Switch to using the new API kobj_to_dev() 2021-04-25 23:38:10 +02:00
ledtrig-timer.c leds: trigger: remove redundant assignment to variable ret 2020-04-27 14:13:12 +02:00
ledtrig-transient.c docs: leds: convert to ReST 2019-06-28 20:57:31 +02:00
ledtrig-tty.c leds: trigger/tty: Use led_set_brightness_sync() from workqueue 2021-03-10 09:27:56 +01:00
Makefile leds: trigger: implement a tty trigger 2021-01-15 10:22:26 +01:00