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