From: Andi Kleen <ak@muc.de>
Date: Tue, 20 Dec 2005 13:45:19 +0000 (+0100)
Subject: [PATCH] Fix swiotlb pci_map_sg error handling
X-Git-Tag: v2.6.15-rc7~16^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e8702334841b6da4b8f564dc1771ca17c59a621;p=pandora-kernel.git

[PATCH] Fix swiotlb pci_map_sg error handling

The overflow checking condition in lib/swiotlb.c was wrong.
It would first run a NULL pointer through virt_to_phys before
testing it. Since pci_map_sg overflow is not that uncommon
and causes data corruption (including broken file systems) when not
properly detected I think it's better to fix it in 2.6.15.

This affects x86-64 and IA64.

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