From mboxrd@z Thu Jan 1 00:00:00 1970 From: tianyu.lan@intel.com Subject: [Fix PATCH] ACPI / video: ignore BIOS initial backlight value for Fujitsu E753 Date: Tue, 16 Jul 2013 10:07:21 +0800 Message-ID: <1373940441-21875-1-git-send-email-tianyu.lan@intel.com> Return-path: Received: from mga09.intel.com ([134.134.136.24]:2469 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755434Ab3GPCPQ (ORCPT ); Mon, 15 Jul 2013 22:15:16 -0400 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: rjw@sisk.pl, lenb@kernel.org Cc: Lan Tianyu , linux-acpi@vger.kernel.org From: Lan Tianyu The BIOS of FUjitsu E753 reports an incorrect initial backlight value for WIN8 compatible OS, causing backlight dark during startup. This patch ignores the incorrect initial value from BIOS. Reference:https://bugzilla.kernel.org/show_bug.cgi?id=60161 Reported-and-tested-by: Jan Hinnerk Stosch Signed-off-by: Lan Tianyu --- drivers/acpi/video.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 5d7075d..e441876 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -450,6 +450,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { }, { .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", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), -- 1.7.9.5