Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752546AbbKBHwR (ORCPT ); Mon, 2 Nov 2015 02:52:17 -0500 Received: from darkcity.gna.ch ([195.226.6.51]:50889 "EHLO mail.gna.ch" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751332AbbKBHwO (ORCPT ); Mon, 2 Nov 2015 02:52:14 -0500 Subject: Re: [PATCH 3.16.y-ckt 072/104] drm/radeon: Restore LCD backlight level on resume (>= R5xx) To: Luis Henriques References: <1445867006-18048-1-git-send-email-luis.henriques@canonical.com> <1445867006-18048-73-git-send-email-luis.henriques@canonical.com> <562EDD15.8030205@daenzer.net> <20151028104559.GB2792@ares> Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com, Alex Deucher From: =?UTF-8?Q?Michel_D=c3=a4nzer?= X-Enigmail-Draft-Status: N1110 Message-ID: <56371626.6050504@daenzer.net> Date: Mon, 2 Nov 2015 16:52:06 +0900 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.3.0 MIME-Version: 1.0 In-Reply-To: <20151028104559.GB2792@ares> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1814 Lines: 43 On 28.10.2015 19:45, Luis Henriques wrote: > On Tue, Oct 27, 2015 at 11:10:29AM +0900, Michel Dänzer wrote: >> On 26.10.2015 22:42, Luis Henriques wrote: >>> 3.16.7-ckt19 -stable review patch. If anyone has any objections, please let me know. >>> >>> ------------------ >>> >>> From: =TF-8?q?Michel Dänzer?= >>> >>> commit 4281f46ef839050d2ef60348f661eb463c21cc2e upstream. >>> >>> Instead of only enabling the backlight (which seems to set it to max >>> brightness), just re-set the current backlight level, which also takes >>> care of enabling the backlight if necessary. >>> >>> Only the radeon_atom_encoder_dpms_dig part tested on a Kaveri laptop, >>> the radeon_atom_encoder_dpms_avivo part is only compile tested. >>> >>> Signed-off-by: Michel Dänzer >>> Signed-off-by: Alex Deucher >>> Signed-off-by: Luis Henriques >> >> We're currently investigating a regression which was bisected to this >> change. Please hold off on backporting this change until we have a >> solution for that. > > Thanks, I'll drop this patch for this 3.16 release, and will wait for a > fix to be available. The regression is fixed in commits 4cee6a9057d5e13911f0cb6e143d11dc1a3245dd and ae93580ee59c02395c1711d3e6b90546b8137b86 . Please only backport 4281f46ef839050d2ef60348f661eb463c21cc2e together with those two. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer -- 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/