Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754916AbaGHAG2 (ORCPT ); Mon, 7 Jul 2014 20:06:28 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:56510 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754910AbaGHADf (ORCPT ); Mon, 7 Jul 2014 20:03:35 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alex Hung , "Rafael J. Wysocki" , Ben Hutchings , Yijing Wang Subject: [PATCH 3.4 31/44] ACPI video: ignore BIOS initial backlight value for HP 1000 Date: Mon, 7 Jul 2014 17:07:21 -0700 Message-Id: <20140707235859.569781149@linuxfoundation.org> X-Mailer: git-send-email 2.0.0.254.g50f84e3 In-Reply-To: <20140707235858.652771077@linuxfoundation.org> References: <20140707235858.652771077@linuxfoundation.org> User-Agent: quilt/0.63-1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Hung commit 4ef366c583d6180b1c951147869ee5a3038834f2 upstream. On HP 1000 lapops, BIOS reports minimum backlight on boot and causes backlight to dim completely. This ignores the initial backlight values and set to max brightness. References:: https://bugs.launchpad.net/bugs/1167760 Signed-off-by: Alex Hung Signed-off-by: Rafael J. Wysocki Signed-off-by: Ben Hutchings Cc: Yijing Wang Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/video.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -463,6 +463,14 @@ static struct dmi_system_id video_dmi_ta DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion m4 Notebook PC"), }, }, + { + .callback = video_ignore_initial_backlight, + .ident = "HP 1000 Notebook PC", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP 1000 Notebook PC"), + }, + }, {} }; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/