linux-kernel - Re: [PATCH 11/19] powerpc/powermac: Move pmac_pfunc_base

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Message-ID: <CA+7wUsxtWCoE1rxP6e57MEfB_zjLUzTa36CD=TyZS4_DkrQ81Q@mail.gmail.com>
Date:   Wed, 28 Mar 2018 21:11:48 +0200
From:   Mathieu Malaterre <malat@...ian.org>
To:     christophe leroy <christophe.leroy@....fr>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        LKML <linux-kernel@...r.kernel.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH 11/19] powerpc/powermac: Move pmac_pfunc_base_install
 prototype to header file

On Fri, Mar 23, 2018 at 1:13 PM, christophe leroy
<christophe.leroy@....fr> wrote:
>
>
> Le 22/03/2018 à 21:19, Mathieu Malaterre a écrit :
>>
>> The pmac_pfunc_base_install prototype was declared in powermac/smp.c since
>> function was used there, move it to pmac_pfunc.h header to be visible in
>> pfunc_base.c. Fix a warning treated as error with W=1:
>>
>>    arch/powerpc/platforms/powermac/pfunc_base.c:330:12: error: no previous
>> prototype for ‘pmac_pfunc_base_install’ [-Werror=missing-prototypes]
>>
>> Signed-off-by: Mathieu Malaterre <malat@...ian.org>
>> ---
>>   arch/powerpc/include/asm/pmac_pfunc.h | 1 +
>>   arch/powerpc/platforms/powermac/smp.c | 1 -
>>   2 files changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/powerpc/include/asm/pmac_pfunc.h
>> b/arch/powerpc/include/asm/pmac_pfunc.h
>> index 73bd8f28f2a8..99f7a288789a 100644
>> --- a/arch/powerpc/include/asm/pmac_pfunc.h
>> +++ b/arch/powerpc/include/asm/pmac_pfunc.h
>> @@ -245,6 +245,7 @@ extern void pmf_put_function(struct pmf_function
>> *func);
>>     extern int pmf_call_one(struct pmf_function *func, struct pmf_args
>> *args);
>>   +extern int pmac_pfunc_base_install(void);
>
>
>
> extern keyword is not needed

I understand; but for consistency every single protoypes in this
header file actually use the extern keyword. Is there a guide/best
practice to refer to in this case ?

> Christophe
>
>>     /* Suspend/resume code called by via-pmu directly for now */
>>   extern void pmac_pfunc_base_suspend(void);
>> diff --git a/arch/powerpc/platforms/powermac/smp.c
>> b/arch/powerpc/platforms/powermac/smp.c
>> index 95275e0e2efa..447da6db450a 100644
>> --- a/arch/powerpc/platforms/powermac/smp.c
>> +++ b/arch/powerpc/platforms/powermac/smp.c
>> @@ -65,7 +65,6 @@
>>   #endif
>>     extern void __secondary_start_pmac_0(void);
>> -extern int pmac_pfunc_base_install(void);
>>     static void (*pmac_tb_freeze)(int freeze);
>>   static u64 timebase;
>>
>
> ---
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>