linux-kernel - RE: [PATCH v3 1/4] ARM: dma-mapping: define ARCH_HAS_DMA_MMAP

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Date:	Tue, 07 Aug 2012 17:22:02 +0200
From:	Marek Szyprowski <m.szyprowski@...sung.com>
To:	'Hideki EIRAKU' <hdk@...l.co.jp>,
	'Russell King' <linux@....linux.org.uk>,
	'Pawel Osciak' <pawel@...iak.com>,
	'Kyungmin Park' <kyungmin.park@...sung.com>,
	'Mauro Carvalho Chehab' <mchehab@...radead.org>,
	'Florian Tobias Schandinat' <FlorianSchandinat@....de>,
	'Jaroslav Kysela' <perex@...ex.cz>,
	'Takashi Iwai' <tiwai@...e.de>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org, linux-fbdev@...r.kernel.org,
	alsa-devel@...a-project.org, 'Katsuya MATSUBARA' <matsu@...l.co.jp>
Subject: RE: [PATCH v3 1/4] ARM: dma-mapping: define ARCH_HAS_DMA_MMAP_COHERENT

Hi Hideki,

On Monday, August 06, 2012 11:55 AM Hideki EIRAKU wrote:

> ARCH_HAS_DMA_MMAP_COHERENT indicates that there is dma_mmap_coherent() API
> in this architecture.  The name is already defined in PowerPC.
> 
> Signed-off-by: Hideki EIRAKU <hdk@...l.co.jp>
> ---
>  arch/arm/include/asm/dma-mapping.h |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
> index bbef15d..f41cd30 100644
> --- a/arch/arm/include/asm/dma-mapping.h
> +++ b/arch/arm/include/asm/dma-mapping.h
> @@ -187,6 +187,7 @@ extern int arm_dma_mmap(struct device *dev, struct vm_area_struct *vma,
>  			struct dma_attrs *attrs);
> 
>  #define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, NULL)
> +#define ARCH_HAS_DMA_MMAP_COHERENT
> 
>  static inline int dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma,
>  				  void *cpu_addr, dma_addr_t dma_addr,
> --
> 1.7.0.4

I will take this patch to my dma-mapping kernel tree, to the fixes branch.

Best regards
-- 
Marek Szyprowski
Samsung Poland R&D Center


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