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Groups > linux.kernel > #1370867

[PATCH 0/5] Extend the LED panic trigger

From Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Newsgroups linux.kernel
Subject [PATCH 0/5] Extend the LED panic trigger
Date 2016-04-04 22:30 +0200
Message-ID <rkjih-dT-7@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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As per commit 916fe61995 ("leds: trigger: Introduce a kernel panic LED
trigger"), the kernel now supports a new LED trigger to hook on
the panic blink.

However, the only way of using this is to dedicate a LED device
to this function.

To overcome this limitation, the present series introduces the
capability to switch the LED trigger of certain LED devices upon
a kernel panic (using the panic notifier).

The decision of which LEDs should be switched to the panic trigger
is left to each LED device driver. As an example, a devicetree
boolean property is introduced and used in the leds-gpio driver.

Feedback and other ideas on how to implement this are most welcomed.

Ezequiel Garcia (5):
  leds: triggers: Allow to switch the trigger to "panic" on a kernel
    panic
  leds: triggers: Add a led_trigger_event_nosleep API
  leds: trigger: panic: Use led_trigger_event_nosleep
  devicetree: leds: Introduce "panic-blink" optional property
  leds: gpio: Support the panic-blink firmware property

 Documentation/devicetree/bindings/leds/common.txt |  2 +
 drivers/leds/led-triggers.c                       | 78 +++++++++++++++++++++--
 drivers/leds/leds-gpio.c                          |  4 ++
 drivers/leds/trigger/ledtrig-panic.c              |  2 +-
 include/linux/leds.h                              |  6 ++
 5 files changed, 87 insertions(+), 5 deletions(-)

-- 
2.7.0

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[PATCH 0/5] Extend the LED panic trigger Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> - 2016-04-04 22:30 +0200
  [PATCH 5/5] leds: gpio: Support the panic-blink firmware property Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> - 2016-04-04 22:30 +0200
  [PATCH 2/5] leds: triggers: Add a led_trigger_event_nosleep API Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> - 2016-04-04 22:30 +0200
    Re: [PATCH 2/5] leds: triggers: Add a led_trigger_event_nosleep API Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2016-04-05 23:40 +0200
      Re: [PATCH 2/5] leds: triggers: Add a led_trigger_event_nosleep API Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> - 2016-04-06 06:40 +0200
        Re: [PATCH 2/5] leds: triggers: Add a led_trigger_event_nosleep API Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2016-04-06 08:20 +0200

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