From: David Miller <davem@davemloft.net>
To: fujita.tomonori@lab.ntt.co.jp
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org
Subject: Re: [PATCH -mm 2/3] unify dma_get_cache_alignment implementations
Date: Thu, 08 Jul 2010 23:14:30 -0700 (PDT) [thread overview]
Message-ID: <20100708.231430.35020644.davem@davemloft.net> (raw)
In-Reply-To: <1278572268-26146-3-git-send-email-fujita.tomonori@lab.ntt.co.jp>
From: FUJITA Tomonori <fujita.tomonori@lab.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@lab.ntt.co.jp>
Acked-by: David S. Miller <davem@davemloft.net>
next prev parent reply other threads:[~2010-07-09 6:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-08 6:57 [PATCH -mm 0/3] unify dma_get_cache_alignment implementations FUJITA Tomonori
2010-07-08 6:57 ` FUJITA Tomonori
2010-07-08 6:57 ` [PATCH -mm 1/3] rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN FUJITA Tomonori
2010-07-08 6:57 ` FUJITA Tomonori
2010-07-08 6:57 ` [PATCH -mm 2/3] unify dma_get_cache_alignment implementations FUJITA Tomonori
2010-07-09 6:14 ` David Miller [this message]
2010-07-08 6:57 ` [PATCH -mm 3/3] parisc: set ARCH_DMA_MINALIGN FUJITA Tomonori
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