drm/i915: quirk backlight present on Macbook 4, 1

Unsurprisingly macbooks have backlights, just the VBT doesn't seem to
know it in this case.

Reported-and-tested-by: Daniel Nicoletti <dantti12@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88325
Fixes: c675949ec58c ("drm/i915: do not setup backlight if not available according to VBT")
Cc: stable@vger.kernel.org # v3.15+
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1446716999-1796-1-git-send-email-jani.nikula@intel.com

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b0f23692346ee86b8f0a7aade68b23ece3ae7dee..bcf227356f78122f56e0bd3bcdeaff945bd86393 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -14707,6 +14707,9 @@ static struct intel_quirk intel_quirks[] = {
        /* 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 },