linux-kernel - Re: [PATCH] arch: hexagon: Kconfig: add HAVE_DMA_ATTR in Kconfig and remove "linux/dma-mapping.h" from "asm/dma-mapping.h"

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Date:	Sun, 24 Nov 2013 19:19:38 -0600
From:	rkuo <rkuo@...eaurora.org>
To:	Chen Gang <gang.chen.5i5j@...il.com>
Cc:	linux-hexagon@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arch: hexagon: Kconfig: add HAVE_DMA_ATTR in Kconfig and
 remove "linux/dma-mapping.h" from "asm/dma-mapping.h"

On Tue, Nov 19, 2013 at 12:57:27PM +0800, Chen Gang wrote:
> When HAS_DMA, and also need use generic implementation, HAVE_DMA_ATTR
> must be enabled, or can not pass compiling with allmodconfig, the
> related error:
> 
>     CC [M]  drivers/ata/libata-core.o
>   drivers/ata/libata-core.c: In function 'ata_sg_clean':
>   drivers/ata/libata-core.c:4598:3: error: implicit declaration of function 'dma_unmap_sg' [-Werror=implicit-function-declaration]
>   drivers/ata/libata-core.c: In function 'ata_sg_setup':
>   drivers/ata/libata-core.c:4708:2: error: implicit declaration of function 'dma_map_sg' [-Werror=implicit-function-declaration]
> 
> "linux/dma-mapping.h" will include "asm/dma-mapping.h", so need remove
> "linux/dma-mapping.h" from "asm/dma-mapping.h",
> 
> 
> Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>

Acked-by: Richard Kuo <rkuo@...eaurora.org>

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