"Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx> writes:
> On Friday, May 24, 2019 12:44:18 PM CEST Mathieu Malaterre wrote:
>> The declaration for pfn_is_nosave is only available in
>> kernel/power/power.h. Since this function can be override in arch,
>> expose it globally. Having a prototype will make sure to avoid warning
>> (sometime treated as error with W=1) such as:
>>
>> arch/powerpc/kernel/suspend.c:18:5: error: no previous prototype for 'pfn_is_nosave' [-Werror=missing-prototypes]
>>
>> This moves the declaration into a globally visible header file and add
>> missing include to avoid a warning on powerpc. Also remove the
>> duplicated prototypes since not required anymore.
>>
>> Cc: Christophe Leroy <christophe.leroy@xxxxxx>
>> Signed-off-by: Mathieu Malaterre <malat@xxxxxxxxxx>
>> ---
>> v2: As suggestion by christophe remove duplicates prototypes
>>
>> arch/powerpc/kernel/suspend.c | 1 +
>> arch/s390/kernel/entry.h | 1 -
>> include/linux/suspend.h | 1 +
>> kernel/power/power.h | 2 --
>> 4 files changed, 2 insertions(+), 3 deletions(-)
>>
>> diff --git a/kernel/power/power.h b/kernel/power/power.h
>> index 9e58bdc8a562..44bee462ff57 100644
>> --- a/kernel/power/power.h
>> +++ b/kernel/power/power.h
>> @@ -75,8 +75,6 @@ static inline void hibernate_reserved_size_init(void) {}
>> static inline void hibernate_image_size_init(void) {}
>> #endif /* !CONFIG_HIBERNATION */
>>
>> -extern int pfn_is_nosave(unsigned long);
>> -
>> #define power_attr(_name) \
>> static struct kobj_attribute _name##_attr = { \
>> .attr = { \
>>
>
> With an ACK from the powerpc maintainers, I could apply this one.
Sent.
cheers
