[PATCH v7 2/2] ARM hibernation / suspend-to-disk

Sebastian Capella sebastian.capella at linaro.org
Tue Mar 25 14:48:59 EDT 2014

Hi Alexander,

Thanks for your comments.

I've posted a different solution for arm only here, that just causes a
while loop in machine_power_off in the event it's called but does not


On 25 March 2014 11:38, Alexander Holler <holler at ahsoftware.de> wrote:
> Both states, power off and sys halt, do sound pretty final and I would
> assume something is broken, if power off is called before sys halt or vice
> versa. At least I would never expect that the reboot/poweroff/syshalt
> notifier may be called twice (and thats why the heartbeat-trigger may
> crash).
> But just in case, changing that behaviour in ledtrig-heartbeat.c would be
> pretty easy, just remove the heartbeat_reboot_notifier (which plays nice and
> deregisters the trigger on reboot) and use the panic_notifier (which doesn't
> unregister the trigger but just turns off the led) for reboot too. Another
> solution would be to unregister the reboot_notifier in the reboot_nofifier
> itself. I've just seen one watchdog driver (drivers/rtc/rtc-m41t80.c) which
> does that. But I still think such shouldn't be necessary (and I haven't had
> a look at other reboot_notifier users).

I hope this will all be handled by the loop in machine_power_off, so
maybe this will not be needed.



More information about the linux-arm-kernel mailing list