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Date:   Tue, 28 May 2019 11:15:56 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Mathieu Malaterre <malat@...ian.org>
Cc:     Mathieu Malaterre <malat@...ian.org>,
        Christophe Leroy <christophe.leroy@....fr>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-s390@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v2] powerpc/power: Expose pfn_is_nosave prototype

Mathieu Malaterre <malat@...ian.org> writes:
> 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@....fr>
> Signed-off-by: Mathieu Malaterre <malat@...ian.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(-)

Looks fine to me.

Acked-by: Michael Ellerman <mpe@...erman.id.au> (powerpc)

cheers

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