linux-kernel - Re: [PATCH] arch: avr32: include: asm: add generic ioremap

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Message-ID: <20140217095314.GC20665@samfundet.no>
Date:	Mon, 17 Feb 2014 10:53:14 +0100
From:	Hans-Christian Egtvedt <egtvedt@...fundet.no>
To:	Chen Gang <gang.chen.5i5j@...il.com>
Cc:	Håvard Skinnemoen <hskinnemoen@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	havard@...nnemoen.net, josh.wu@...el.com,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arch: avr32: include: asm: add generic ioremap_wc()
 definition in "io.h"

Around Sun 16 Feb 2014 19:39:30 +0800 or thereabout, Chen Gang wrote:
> Need generic ioremap_wc(), or can not pass compiling with allmodconfig,
> the related error:
> 
>     CC [M]  drivers/gpu/drm/drm_bufs.o
>   drivers/gpu/drm/drm_bufs.c: In function 'drm_addmap_core':
>   drivers/gpu/drm/drm_bufs.c:217: error: implicit declaration of function 'ioremap_wc'
>   drivers/gpu/drm/drm_bufs.c:218: warning: assignment makes pointer from integer without a cast

I guess this patch needs to go in before pulling in vga.h.

> 
> Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>

Acked-by: Hans-Christian Egtvedt <egtvedt@...fundet.no>

> ---
>  arch/avr32/include/asm/io.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/avr32/include/asm/io.h b/arch/avr32/include/asm/io.h
> index fc6483f..4f5ec2b 100644
> --- a/arch/avr32/include/asm/io.h
> +++ b/arch/avr32/include/asm/io.h
> @@ -295,6 +295,8 @@ extern void __iounmap(void __iomem *addr);
>  #define iounmap(addr)				\
>  	__iounmap(addr)
>  
> +#define ioremap_wc ioremap_nocache
> +
>  #define cached(addr) P1SEGADDR(addr)
>  #define uncached(addr) P2SEGADDR(addr)
>  
-- 
mvh
Hans-Christian Egtvedt
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