From: Elias Oltmanns <eo@nebensachen.de>
Date: Mon, 3 Nov 2008 10:01:08 +0000 (+0900)
Subject: libata: Fix a potential race condition in ata_scsi_park_show()
X-Git-Tag: v2.6.28-rc4~87^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a464189de350b050aa8f334bd4cc53ed406e56dd;p=pandora-kernel.git

libata: Fix a potential race condition in ata_scsi_park_show()

Peter Moulder has pointed out that there is a slight chance that a
negative value might be passed to jiffies_to_msecs() in
ata_scsi_park_show(). This is fixed by saving the value of jiffies in a
local variable, thus also reducing code since the volatile variable
jiffies is accessed only once.

Signed-off-by: Elias Oltmanns <eo@nebensachen.de>
Signed-off-by: Tejun Heo <tj.kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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