On Tuesday 29 March 2016 17:35:46 Ezequiel Garcia wrote:

This patchset adds a very simple kernel panic LED trigger,
by hooking into panic_blink. I've tested this trigger on
ARM Armada XP OpenBlocks AX3-4 machine.

The trigger is then used to replace the open-coded panic_blink
usage in GTA02 board.

Note that I don't have a GTA02 board, so the last patch is only
built tested.

Ezequiel Garcia (3):
  leds: trigger: Introduce a kernel panic LED trigger
  ARM: configs: Enable panic LED trigger on s3c2410
  ARM: s3c24xx: Use the panic LED trigger for GTA02

 arch/arm/configs/s3c2410_defconfig   |  1 +
 arch/arm/mach-s3c24xx/mach-gta02.c   | 35 ++++++++++++++++-------------------
 drivers/leds/trigger/Kconfig         |  7 +++++++
 drivers/leds/trigger/Makefile        |  1 +
 drivers/leds/trigger/ledtrig-panic.c | 30 ++++++++++++++++++++++++++++++
 5 files changed, 55 insertions(+), 19 deletions(-)
 create mode 100644 drivers/leds/trigger/ledtrig-panic.c

Now we just need to port this 13-year old patch:

https://lwn.net/Articles/21857/

;-)

	Arnd