From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A1D27C04EB9 for ; Wed, 5 Dec 2018 15:34:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D63D2084C for ; Wed, 5 Dec 2018 15:34:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6D63D2084C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728040AbeLEPef (ORCPT ); Wed, 5 Dec 2018 10:34:35 -0500 Received: from mga03.intel.com ([134.134.136.65]:36990 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727257AbeLEPee (ORCPT ); Wed, 5 Dec 2018 10:34:34 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Dec 2018 07:34:23 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,318,1539673200"; d="scan'208";a="299563235" Received: from linux.intel.com ([10.54.29.200]) by fmsmga006.fm.intel.com with ESMTP; 05 Dec 2018 07:34:23 -0800 Received: from nhgala-mobl2.amr.corp.intel.com (unknown [10.251.129.101]) by linux.intel.com (Postfix) with ESMTP id A12F9580433; Wed, 5 Dec 2018 07:34:22 -0800 (PST) Subject: Re: [PATCH AUTOSEL 4.19 031/123] ASoC: Intel: Power down links before turning off display audio power To: Mark Brown , Sasha Levin Cc: stable@vger.kernel.org, linux-kernel@vger.kernel.org, Sriram Periyasamy , Sanyog Kale References: <20181205093555.5386-1-sashal@kernel.org> <20181205093555.5386-31-sashal@kernel.org> <20181205114851.GC6205@sirena.org.uk> From: Pierre-Louis Bossart Message-ID: <475af06c-bae7-13f4-26fc-8d4a9944e25f@linux.intel.com> Date: Wed, 5 Dec 2018 07:34:18 -0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20181205114851.GC6205@sirena.org.uk> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/5/18 3:48 AM, Mark Brown wrote: > On Wed, Dec 05, 2018 at 04:34:23AM -0500, Sasha Levin wrote: >> From: Pierre-Louis Bossart >> >> [ Upstream commit 4c10473d6ddf12ec124c9ff71a5d23bb5388478b ] >> >> On certain platforms, Display HDMI HDA codec was not going to sleep state >> after the use when links are powered down after turning off the display >> power. As per the HW recommendation, links are powered down before turning >> off the display power to ensure that the codec goes to sleep state. > > Are we sure there's no dependencies here? If you are referring to dependencies to other patches, not that I can think of. Based on timelines there isn't a strong link with 4.19: the patch was initially submitted in August (and missed), before v4.19 came out, and has also been used in 4.14 backports.