From: Jiang Liu <liuj97@gmail.com>
Date: Fri, 7 Dec 2012 20:43:50 +0000 (-0700)
Subject: VFIO: use ACCESS_ONCE() to guard access to dev->driver
X-Git-Tag: v3.8-rc1~10^2~2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=de2b3eeafb555d7b623c9f34e399b39105ca527f;p=pandora-kernel.git

VFIO: use ACCESS_ONCE() to guard access to dev->driver

Comments from dev_driver_string(),
/* dev->driver can change to NULL underneath us because of unbinding,
 * so be careful about accessing it.
 */

So use ACCESS_ONCE() to guard access to dev->driver field.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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