From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Mon, 8 Sep 2008 09:10:13 +0000 (+0900)
Subject: x86: dma_alloc_coherent sets gfp flags properly
X-Git-Tag: v2.6.28-rc1~712^2^4~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=823e7e8c6ef12cd1943dc42fe7595ca74e8cc3d7;p=pandora-kernel.git

x86: dma_alloc_coherent sets gfp flags properly

Non real IOMMU implemenations (which doesn't do virtual mappings,
e.g. swiotlb, pci-nommu, etc) need to use proper gfp flags and
dma_mask to allocate pages in their own dma_alloc_coherent()
(allocated page need to be suitable for device's coherent_dma_mask).

This patch makes dma_alloc_coherent do this job so that IOMMUs don't
need to take care of it any more.

Real IOMMU implemenataions can simply ignore the gfp flags.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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