--- linux/drivers/gpu/drm/i915/intel_display.c.orig 2015-11-06 13:11:57.343151350 +0100
+++ linux/drivers/gpu/drm/i915/intel_display.c  2015-11-06 13:54:54.869927831 +0100
@@ -14670,6 +14670,9 @@
    /* Apple Macbook 2,1 (Core 2 T7400) */
    { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },

+   /* Apple Macbook 4,1 */
+   { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
+
    /* Toshiba CB35 Chromebook (Celeron 2955U) */
    { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },