Re: [PATCH v2] powerpc/power: Expose pfn_is_nosave prototype

["Rafael J. Wysocki" <rjw@rjwysocki.net>]

On Tuesday, May 28, 2019 3:16:30 AM CEST Michael Ellerman wrote:
> "Rafael J. Wysocki" <rjw@rjwysocki.net> 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@c-s.fr>
> >> Signed-off-by: Mathieu Malaterre <malat@debian.org>
> >> ---
> >> 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.

Thanks!