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

[Sebastian Capella]

On 19 March 2014 13:47, Sebastian Capella <sebastian.capella at linaro.org> wrote:
> diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
> index a5f702a..d96b910 100644
> --- a/kernel/power/hibernate.c
> +++ b/kernel/power/hibernate.c
> @@ -594,7 +594,8 @@ static void power_down(void)
>         case HIBERNATION_PLATFORM:
>                 hibernation_platform_enter();
>         case HIBERNATION_SHUTDOWN:
> -               kernel_power_off();
> +               if (pm_power_off)
> +                       kernel_power_off();
>                 break;
>  #ifdef CONFIG_SUSPEND
>         case HIBERNATION_SUSPEND:
>
>
> This follows the behavior in the reboot syscall which does it this way
> also.  I'm testing this now, and it seems work fine.  If this looks
> good, I can add it as an additional patch.

BTW, one thing I would point out is that kernel_power_off and
kernel_halt call the same notifier but with different parameters
(SYS_POWER_OFF and SYS_HALT).

If pm_power_down is null, I dont see why we'd want to notify
SYS_POWER_OFF before SYS_HALT.  With the previous change I'm assuming
there's no benefit, so please chime in if you know a reason.

Thanks,

Sebastian