From: Mark Lord <liml@rtr.ca>
Date: Tue, 10 Mar 2009 20:28:51 +0000 (-0400)
Subject: sata_mv: fix MSI irq race condition
X-Git-Tag: v2.6.29~42^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9d51af7bd2f1d730cb6eeeb9ff837e3441ad4e07;p=pandora-kernel.git

sata_mv: fix MSI irq race condition

Fix a (rare) race condition in mv_interrupt() when using MSI.

The value of hpriv->main_irq_mask_addr can change on on the fly,
and without this patch we could end up writing back a stale copy
to the hardware.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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