linux-kernel - Re: [PATCH -next] fbdev: atyfb: always declare aty_{ld,st}

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Message-ID: <a6083478-0f9b-ab8d-c93b-c5c06283865f@infradead.org>
Date:   Wed, 24 Feb 2021 14:17:56 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel test robot <lkp@...el.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        linux-fbdev@...r.kernel.org,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...ux.ie>,
        Jani Nikula <jani.nikula@...ux.intel.com>
Subject: Re: [PATCH -next] fbdev: atyfb: always declare aty_{ld,st}_lcd()

On 2/24/21 2:07 PM, Nick Desaulniers wrote:
> On Wed, Feb 24, 2021 at 1:55 PM Randy Dunlap <rdunlap@...radead.org> wrote:
>>
>> The previously added stubs for aty_{ld,}st_lcd() make it
>> so that these functions are used regardless of the config
>> options that were guarding them, so remove the #ifdef/#endif
>> lines and make their declarations always visible.
>> This fixes build warnings that were reported by clang:
> 
> Yes, though I think GCC would warn similarly with W=1 builds as well,
> which was set for the 0day bot report.
> 

<knocks head> I should enable that until it hurts too much.

>>
>>    drivers/video/fbdev/aty/atyfb_base.c:180:6: warning: no previous prototype for function 'aty_st_lcd' [-Wmissing-prototypes]
>>    void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
>>         ^
>>    drivers/video/fbdev/aty/atyfb_base.c:180:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
>>    void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
>>
>>    drivers/video/fbdev/aty/atyfb_base.c:183:5: warning: no previous prototype for function 'aty_ld_lcd' [-Wmissing-prototypes]
>>    u32 aty_ld_lcd(int index, const struct atyfb_par *par)
>>        ^
>>    drivers/video/fbdev/aty/atyfb_base.c:183:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
>>    u32 aty_ld_lcd(int index, const struct atyfb_par *par)
>>
>> They should not be marked as static since they are used in
>> mach64_ct.c.
> 
> Probably don't need to be marked extern either (since that's the
> implicit default), but I don't feel strongly about it.

Yeah, I was just leaving it as it was...

> Thanks for sending a cleanup for this.
> Acked-by: Nick Desaulniers <ndesaulniers@...gle.com>
> 
>>
>> Fixes: bfa5782b9caa ("fbdev: atyfb: add stubs for aty_{ld,st}_lcd()")
>> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
>> Reported-by: kernel test robot <lkp@...el.com>
>> Cc: Daniel Vetter <daniel.vetter@...ll.ch>
>> Cc: Nick Desaulniers <ndesaulniers@...gle.com>
>> Cc: linux-fbdev@...r.kernel.org
>> Cc: dri-devel@...ts.freedesktop.org
>> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
>> Cc: Sam Ravnborg <sam@...nborg.org>
>> Cc: David Airlie <airlied@...ux.ie>
>> Cc: Jani Nikula <jani.nikula@...ux.intel.com>
>> ---
>>  drivers/video/fbdev/aty/atyfb.h |    3 ---
>>  1 file changed, 3 deletions(-)


-- 
~Randy