ACPI / EC: Ensure lock is acquired before accessing ec struct members
authorPuneet Kumar <puneetster@chromium.org>
Fri, 15 Nov 2013 19:41:29 +0000 (11:41 -0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Fri, 15 Nov 2013 22:18:27 +0000 (23:18 +0100)
commit36b15875a7819a2ec4cb5748ff7096ad7bd86cbb
treee5351fc5dac51c8711f4fc1c469bb9d9a45b5a0b
parent5e01dc7b26d9f24f39abace5da98ccbd6a5ceb52
ACPI / EC: Ensure lock is acquired before accessing ec struct members

A bug was introduced by commit b76b51ba0cef ('ACPI / EC: Add more debug
info and trivial code cleanup') that erroneously caused the struct member
to be accessed before acquiring the required lock.  This change fixes
it by ensuring the lock acquisition is done first.

Found by Aaron Durbin <adurbin@chromium.org>

Fixes: b76b51ba0cef ('ACPI / EC: Add more debug info and trivial code cleanup')
References: http://crbug.com/319019
Signed-off-by: Puneet Kumar <puneetster@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
[olof: Commit message reworded a bit]
Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: 3.8+ <stable@vger.kernel.org> # 3.8+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/acpi/ec.c