From: Anton Blanchard <anton@samba.org>
Date: Wed, 7 Sep 2011 14:41:04 +0000 (+0000)
Subject: ibmveth: Fix issue with DMA mapping failure
X-Git-Tag: v3.1-rc7~25^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b93da27f5234198433345e40b39ff59797bc6f6e;p=pandora-kernel.git

ibmveth: Fix issue with DMA mapping failure

descs[].fields.address is 32bit which truncates any dma mapping
errors so dma_mapping_error() fails to catch it.

Use a dma_addr_t to do the comparison. With this patch I was able
to transfer many gigabytes of data with IOMMU fault injection set
at 10% probability.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # v2.6.37+
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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