[RFC PATCH 05/16] arm64: support poweroff through poweroff handler call chain

[Guenter Roeck]

On 10/03/2014 03:30 AM, Catalin Marinas wrote:
> On Tue, Sep 30, 2014 at 07:00:45PM +0100, Guenter Roeck wrote:
>> The kernel core now supports a poweroff handler call chain
>> to remove power from the system. Call it if pm_power_off
>> is set to NULL.
>>
>> Cc: Catalin Marinas <catalin.marinas at arm.com>
>> Cc: Will Deacon <will.deacon at arm.com>
>> Signed-off-by: Guenter Roeck <linux at roeck-us.net>
>> ---
>>   arch/arm64/kernel/process.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
>> index 398ab05..cc0c63e 100644
>> --- a/arch/arm64/kernel/process.c
>> +++ b/arch/arm64/kernel/process.c
>> @@ -157,6 +157,8 @@ void machine_power_off(void)
>>   	smp_send_stop();
>>   	if (pm_power_off)
>>   		pm_power_off();
>> +	else
>> +		do_kernel_poweroff();
>
> Acked-by: Catalin Marinas <catalin.marinas at arm.com>
>
> As others already stated, I think we should eventually remove
> pm_power_off entirely.
>

Hi Catalin,
yes, already working on it. As suggested by others, I'll move pm_power_off
to a central location (no need to declare the same variable for each
architecture) and hide the call to it in do_kernel_poweroff() as a
first step. You'll see this in the next version of the series.
This will make it much easier to remove it later on.

Thanks,
Guenter