From 9657a565a476d517451c10b0bcc106e300785aff Mon Sep 17 00:00:00 2001
From: Lan Tianyu <tianyu.lan@intel.com>
Date: Tue, 16 Jul 2013 10:07:21 +0800
Subject: [PATCH] ACPI / video: ignore BIOS initial backlight value for Fujitsu
 E753

The BIOS of FUjitsu E753 reports an incorrect initial backlight value
for WIN8 compatible OS, causing backlight to be dark during startup.
This change causes the incorrect initial value from BIOS to be ignored.

References: https://bugzilla.kernel.org/show_bug.cgi?id=60161
Reported-and-tested-by: Jan Hinnerk Stosch <janhinnerk.stosch@gmail.com>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Cc: 3.7+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/video.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 5d7075d25700..e441876f5d5b 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -448,6 +448,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"),
 		},
 	},
+	{
+	 .callback = video_ignore_initial_backlight,
+	 .ident = "Fujitsu E753",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "FUJITSU"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E753"),
+		},
+	},
 	{
 	 .callback = video_ignore_initial_backlight,
 	 .ident = "HP Pavilion dm4",