From: Andi Kleen <ak@suse.de>
Date: Sun, 12 Feb 2006 22:34:59 +0000 (-0800)
Subject: [PATCH] x86_64: GART DMA merging fix
X-Git-Tag: v2.6.16-rc3~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d541064e8f58858e11cd34d81b6e83617f6eb4a;p=pandora-kernel.git

[PATCH] x86_64: GART DMA merging fix

Don't touch the non DMA members in the sg list in dma_map_sg in the IOMMU

Some drivers (in particular ST) ran into problems because they reused the sg
lists after passing them to pci_map_sg().  The merging procedure in the K8
GART IOMMU corrupted the state.  This patch changes it to only touch the dma*
entries during merging, but not the other fields.  Approach suggested by Dave
Miller.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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