linux-kernel - Re: [PATCH 15/21] powerpc: Add missing prototype for MMU

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Date:   Sun, 04 Mar 2018 21:54:16 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Mathieu Malaterre <malat@...ian.org>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Jiri Slaby <jslaby@...e.com>, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, Mathieu Malaterre <malat@...ian.org>
Subject: Re: [PATCH 15/21] powerpc: Add missing prototype for MMU_setup

Mathieu Malaterre <malat@...ian.org> writes:
> Add a function declaration for MMU_setup at the beginning of the file to
> fix a warning (treated as error in W=1):
>
>   CC      kernel/sys.o
> arch/powerpc/mm/init_32.c:102:13: error: no previous prototype for ‘MMU_setup’ [-Werror=missing-prototypes]
>  void __init MMU_setup(void)
>              ^~~~~~~~~
> cc1: all warnings being treated as errors

Can't it be static instead?

  $ git grep -n MMU_setup
  arch/powerpc/mm/init_32.c:102:void __init MMU_setup(void)
  arch/powerpc/mm/init_32.c:135:  MMU_setup();

cheers