linux-kernel - Re: [PATCH 06/17] ARM: pxa: work around duplicate definition of GPIO24_SSP1

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Date:	Wed, 03 Oct 2012 08:38:22 +0200
From:	Igor Grinberg <grinberg@...pulab.co.il>
To:	Arnd Bergmann <arnd@...db.de>
CC:	linux-arm-kernel@...radead.org, arm@...nel.org,
	linux-kernel@...r.kernel.org,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Mike Rapoport <mike@...pulab.co.il>
Subject: Re: [PATCH 06/17] ARM: pxa: work around duplicate definition of GPIO24_SSP1_SFRM

On 10/02/12 18:36, Arnd Bergmann wrote:
> The symbol "GPIO24_SSP1_SFRM" is defined in both mfp-pxa27x.h and
> mfp-pxa25x.h. Since the macro is not actually used in the cm-x2xx.c
> file, but it includes both headers, a safe workaround should be
> to just undefine it from the .c file. This is a bit hacky and
> the headers should be fixed to not both define it, but for now
> it gets us around an annoying warning.

Yep, agreed...

> 
> Without this patch, building cm_x2xx_defconfig results in:
> 
> In file included from arch/arm/mach-pxa/include/mach-pxa/pxa27x.h:7:0,
>                  from arch/arm/mach-pxa/cm-x2xx.c:25:
> arch/arm/mach-pxa/include/mach-pxa/mfp-pxa27x.h:215:0: warning: "GPIO24_SSP1_SFRM" redefined [enabled by default]
> arch/arm/mach-pxa/include/mach-pxa/mfp-pxa25x.h:111:0: note: this is the location of the previous definition
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Cc: Haojian Zhuang <haojian.zhuang@...il.com>
> Cc: Mike Rapoport <mike@...pulab.co.il>

Acked-by: Igor Grinberg <grinberg@...pulab.co.il>

Thanks for the patch.

> ---
>  arch/arm/mach-pxa/cm-x2xx.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/mach-pxa/cm-x2xx.c b/arch/arm/mach-pxa/cm-x2xx.c
> index 8fa4ad2..ae5e74a 100644
> --- a/arch/arm/mach-pxa/cm-x2xx.c
> +++ b/arch/arm/mach-pxa/cm-x2xx.c
> @@ -22,6 +22,7 @@
>  #include <asm/mach/map.h>
>  
>  #include <mach/pxa25x.h>
> +#undef GPIO24_SSP1_SFRM
>  #include <mach/pxa27x.h>
>  #include <mach/audio.h>
>  #include <mach/pxafb.h>

-- 
Regards,
Igor.
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