From a11d342fb89aedec5003d116e7427d43cbba714d Mon Sep 17 00:00:00 2001
From: Stepan Bujnak <stepanbujnak@fastmail.fm>
Date: Wed, 10 Sep 2014 17:44:43 +0200
Subject: [PATCH] ACPI / video: force vendor backlight on Lenovo Ideapad Z570

Lenovo Ideapad 570 is a pre-win8 laptop where not using vendor
backlight causes the backlight controls not to work.

Signed-off-by: Stepan Bujnak <stepanbujnak@fastmail.fm>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Reading git-format-patch failed