From: Dan Williams <dan.j.williams@intel.com>
Date: Sat, 1 May 2010 22:22:56 +0000 (-0700)
Subject: ioat3: disable cacheline-unaligned transfers for raid operations
X-Git-Tag: v2.6.35-rc1~439^2^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2adfc550b6d9646301c810643bc309fa49375987;p=pandora-kernel.git

ioat3: disable cacheline-unaligned transfers for raid operations

There are cases where cacheline-unaligned raid operations can hang the
dma channel.  Simply disable these operations by increasing the
alignment constraints published to async_tx.  The raid456 driver always
issues page aligned requests, so the only in-kernel user of the ioatdma
driver that is affected by this change is dmatest.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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