Pull LED updates from Pavel Machek:
 "This contains usual small updates to drivers, and removal of PAGE_SIZE
  limits on /sys/class/leds/<led>/trigger.

  We should not be really having that many triggers; but with cpu
  activity triggers we do, and we'll eventually need to fix it, but...
  remove the limit for now"

* tag 'leds-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: (26 commits)
  leds: trigger: netdev: fix handling on interface rename
  leds: an30259a: add a check for devm_regmap_init_i2c
  leds: mlxreg: Fix possible buffer overflow
  leds: pca953x: Use of_device_get_match_data()
  leds: core: Fix leds.h structure documentation
  leds: core: Fix devm_classdev_match to reference correct structure
  leds: core: Remove extern from header
  leds: lm3601x: Convert class registration to device managed
  leds: flash: Add devm_* functions to the flash class
  leds: flash: Remove extern from the header file
  leds: flash: Convert non extended registration to inline
  leds: Kconfig: Be consistent with the usage of "LED"
  leds: remove PAGE_SIZE limit of /sys/class/leds/<led>/trigger
  leds: tlc591xx: update the maximum brightness
  leds: lm3692x: Use flags from LM3692X_BRT_CTRL
  leds: lm3692x: Use flags from LM3692X_BOOST_CTRL
  leds: lm3692x: Handle failure to probe the regulator
  leds: lm3692x: Don't overwrite return value in error path
  leds: lm3692x: Print error value on dev_err
  leds: tlc591xx: use devm_led_classdev_register_ext()
  ...

We can now safely read user kcpustat fields on nohz_full CPUs.
Use the appropriate accessor.

[ mingo: Fixed build failure. ]

Reported-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com> (maintainer:LED SUBSYSTEM)
Cc: Pavel Machek <pavel@ucw.cz> (maintainer:LED SUBSYSTEM)
Cc: Dan Murphy <dmurphy@ti.com> (reviewer:LED SUBSYSTEM)
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wanpeng Li <wanpengli@tencent.com>
Link: https://lkml.kernel.org/r/20191121024430.19938-6-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

The NETDEV_CHANGENAME code is not "unneeded" like it is stated in commit
4cb6560514fa ("leds: trigger: netdev: fix refcnt leak on interface
rename").

The event was accidentally misinterpreted equivalent to
NETDEV_UNREGISTER, but should be equivalent to NETDEV_REGISTER.

This was the case in the original code from the openwrt project.

Otherwise, you are unable to set netdev led triggers for (non-existent)
netdevices, which has to be renamed. This is the case, for example, for
ppp interfaces in openwrt.

Fixes: 06f502f57d0d ("leds: trigger: Introduce a NETDEV trigger")
Fixes: 4cb6560514fa ("leds: trigger: netdev: fix refcnt leak on interface rename")
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

an30259a_probe misses a check for devm_regmap_init_i2c and may cause
problems.
Add a check and print errors like other leds drivers.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

Error was detected by PVS-Studio:
V512 A call of the 'sprintf' function will lead to overflow of
the buffer 'led_data->led_cdev_name'.

Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

This driver can use the of_device_get_match_data() API to simplify the
code. Replace calls to of_match_device() with this newer API under the
assumption that where it is called will be when we know the device is
backed by a DT node. This nicely avoids referencing the match table when
it is undefined with configurations where CONFIG_OF=n.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: <linux-leds@vger.kernel.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

Fix the devm_classdev_match pointer initialization to the correct
structure type.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

Convert LED flash class registration to device managed class
registration API.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

Add the missing device managed API for registration and
unregistration for the LED flash class.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

Update the Kconfig to be consistent in the case of using
"LED" in the Kconfig.  LED is an acronym and should be
capitalized.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>