From 99678ed73a50d2df8b5f3c801e29e9b7a3e5aa85 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Thu, 15 May 2014 13:22:33 +0200
Subject: [PATCH] ACPI / video: Don't register acpi_video_resume notifier
 without backlight devices

If we're not going to be registering any backlight devices then
acpi_video_resume is always nop, so don't register it in that case.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Reading git-format-patch failed