linux-kernel - Re: [PATCH -mm 2/3] unify dma_get_cache

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Message-Id: <20100708.231430.35020644.davem@davemloft.net>
Date:	Thu, 08 Jul 2010 23:14:30 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	fujita.tomonori@....ntt.co.jp
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH -mm 2/3] unify dma_get_cache_alignment implementations

From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Date: Thu,  8 Jul 2010 15:57:47 +0900

> dma_get_cache_alignment returns the minimum DMA
> alignment. Architectures defines it as ARCH_DMA_MINALIGN (formally
> ARCH_KMALLOC_MINALIGN). So we can unify dma_get_cache_alignment
> implementations.
> 
> Note that some architectures implement dma_get_cache_alignment
> wrongly. dma_get_cache_alignment() should return the minimum DMA
> alignment. So fully-coherent architectures should return 1. This patch
> also fixes this issue.
> 
> Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>

Acked-by: David S. Miller <davem@...emloft.net>
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