linux-stable.git/drivers/leds/trigger, branch v5.13.2

Merge tag 'leds-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds

2021-05-03T19:23:03+00:00

Pull LED updates from Pavel Machek:
 "Nothing too exciting here, just some fixes"

* tag 'leds-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
  leds: pca9532: Assign gpio base dynamically
  leds: trigger: pattern: Switch to using the new API kobj_to_dev()
  leds: LEDS_BLINK_LGM should depend on X86
  leds: lgm: Fix spelling mistake "prepate" -> "prepare"
  MAINTAINERS: Remove Dan Murphy's bouncing email
  leds-lm3642: convert comma to semicolon
  leds: rt4505: Add support for Richtek RT4505 flash LED controller
  leds: rt4505: Add DT binding document for Richtek RT4505
  leds: Kconfig: LEDS_CLASS is usually selected.
  leds: lgm: Improve Kconfig help
  leds: lgm: fix gpiolib dependency

leds: trigger: pattern: Switch to using the new API kobj_to_dev()

2021-04-25T21:38:10+00:00

Switch to using the new API kobj_to_dev() to fix the below warnning:
./drivers/leds/trigger/ledtrig-pattern.c:336:60-61: WARNING opportunity
for kobj_to_dev()

Signed-off-by: Tian Tao 
Signed-off-by: Pavel Machek

leds: trigger/tty: Use led_set_brightness_sync() from workqueue

2021-03-10T08:27:56+00:00

led_set_brightness() involves scheduling a workqueue. As here the led's
brightness setting is done in context of the trigger's workqueue this is
unjustified overhead and it's more sensible to use
led_set_brightness_sync().

Fixes: fd4a641ac88f ("leds: trigger: implement a tty trigger")
Reported-by: Pavel Machek 
Acked-by: Pavel Machek 
Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20210219133307.4840-3-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman

leds: trigger: Fix error path to not unlock the unlocked mutex

2021-03-10T08:27:55+00:00

ttyname is allocated before the mutex is taken, so it must not be
unlocked in the error path.

Fixes: fd4a641ac88f ("leds: trigger: implement a tty trigger")
Reported-by: Pavel Machek 
Acked-by: Pavel Machek 
Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20210219133307.4840-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman

leds: trigger: implement a tty trigger

2021-01-15T09:22:26+00:00

Usage is as follows:

	myled=ledname
	tty=ttyS0

	echo tty > /sys/class/leds/$myled/trigger
	echo $tty > /sys/class/leds/$myled/ttyname

. When this new trigger is active it periodically checks the tty's
statistics and when it changed since the last check the led is flashed
once.

Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20210113173018.bq2fkea2o3yp6rf6@pengutronix.de
Signed-off-by: Greg Kroah-Hartman

ledtrig-cpu: Limit to 8 CPUs

2020-09-30T17:15:40+00:00

Some machines have thousands of CPUs... and trigger mechanisms was not
really meant for thousands of triggers. I doubt anyone uses this
trigger on many-CPU machine; but if they do, they'll need to do it
properly.

Signed-off-by: Pavel Machek

leds: pattern trigger -- check pattern for validity

2020-07-24T10:43:57+00:00

Don't allow invalid brightness in the pattern.

Signed-off-by: Pavel Machek

leds: trigger: gpio: Avoid warning on update of inverted

2020-07-12T08:06:38+00:00

If the GPIO has not been configured yet, writing to inverted will raise
a kernel warning.

Signed-off-by: Jan Kiszka 
Signed-off-by: Pavel Machek

leds: trigger: remove redundant assignment to variable ret

2020-04-27T12:13:12+00:00

The variable ret is being assigned with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King 
Signed-off-by: Pavel Machek

ledtrig-pattern: fix email address quoting in MODULE_AUTHOR()

2020-01-22T20:07:52+00:00

Apparently it is quite easy to forget ">" in quoting of email
address. This fixes it.

Signed-off-by: Pavel Machek