From: James Hogan <james@albanarts.com>
Date: Mon, 11 Oct 2010 21:59:58 +0000 (+0200)
Subject: PM: Lock PM device list mutex in show_dev_hash()
X-Git-Tag: v2.6.37-rc1~185^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ac21c6bc4249ee6d922f18dbec7266377592c32;p=pandora-kernel.git

PM: Lock PM device list mutex in show_dev_hash()

Lock the PM device list mutex using device_pm_lock() and
device_pm_unlock() around the list iteration in show_dev_hash().

show_dev_hash() was reverse iterating dpm_list without first locking the
mutex that the functions in drivers/base/power/main.c lock. I assume
this was unintentional since there is no comment suggesting why the lock
might not be necessary.

Signed-off-by: James Hogan <james@albanarts.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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