From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755973Ab3FPWVI (ORCPT ); Sun, 16 Jun 2013 18:21:08 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:46443 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755760Ab3FPWI6 (ORCPT ); Sun, 16 Jun 2013 18:08:58 -0400 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Gustavo Maciel Dias Vieira" , "Rafael J. Wysocki" Date: Sun, 16 Jun 2013 23:01:38 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [45/83] ACPI video: ignore BIOS backlight value for HP dm4 In-Reply-To: X-SA-Exim-Connect-IP: 192.168.4.101 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.2.47-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Gustavo Maciel Dias Vieira commit 771d09b3c4c45d4d534a83a68e6331b97fd82e15 upstream. On a HP Pavilion dm4 laptop the BIOS sets minimum backlight on boot, completely dimming the screen. Ignore this initial value for this machine. Signed-off-by: Gustavo Maciel Dias Vieira Signed-off-by: Rafael J. Wysocki Signed-off-by: Ben Hutchings --- drivers/acpi/video.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -447,6 +447,14 @@ static struct dmi_system_id video_dmi_ta DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"), }, }, + { + .callback = video_ignore_initial_backlight, + .ident = "HP Pavilion dm4", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"), + }, + }, {} };