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SubjectRe: [PATCH 2/3] drivers/irqchip: update supports_deactivate static key to modern api
On Mon, 26 Mar 2018, Marc Zyngier wrote:

>> static struct gic_chip_data gic_data __read_mostly;
>> -static struct static_key supports_deactivate = STATIC_KEY_INIT_TRUE;
>> +DEFINE_STATIC_KEY_TRUE(supports_deactivate_key);
>
>When you combine this...
>
>[...]
>
>> diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
>> index ac2e62d613d1..9b7630cee56c 100644
>> --- a/drivers/irqchip/irq-gic.c
>> +++ b/drivers/irqchip/irq-gic.c
>> @@ -121,7 +121,7 @@ static DEFINE_RAW_SPINLOCK(cpu_map_lock);
>> #define NR_GIC_CPU_IF 8
>> static u8 gic_cpu_map[NR_GIC_CPU_IF] __read_mostly;
>>
>> -static struct static_key supports_deactivate = STATIC_KEY_INIT_TRUE;
>> +DEFINE_STATIC_KEY_TRUE(supports_deactivate_key);
>
>...with that, bad things happen:
>
>drivers/irqchip/irq-gic-v3.o:(.data+0x278): multiple definition of `supports_deactivate_key'
>drivers/irqchip/irq-gic.o:(.data+0x18): first defined here
>Makefile:1032: recipe for target 'vmlinux' failed
>make: *** [vmlinux] Error 1

Hmm both were (cross) compile tested, I'll have a look.

Thanks,
Davidlohr

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