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=-5.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 9382BC43331 for ; Sat, 9 Nov 2019 17:01:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D21E215EA for ; Sat, 9 Nov 2019 17:01:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="I8Gl2ifB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726381AbfKIRBP (ORCPT ); Sat, 9 Nov 2019 12:01:15 -0500 Received: from mail-lj1-f194.google.com ([209.85.208.194]:35346 "EHLO mail-lj1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726125AbfKIRBP (ORCPT ); Sat, 9 Nov 2019 12:01:15 -0500 Received: by mail-lj1-f194.google.com with SMTP id r7so9450547ljg.2; Sat, 09 Nov 2019 09:01:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=YsEdvLSqshkQAKsr6hOPBmd5nkHl6aHOD1uqXbjxBps=; b=I8Gl2ifBFWfJa9BHh/OMpGqvpjGAvjkKvzGZXl2wGEjzByDTV9+oVfqGX+n7e/h5Vx 5v+C5gqGK/Ux1wHWk9/UJxx9Y82hE287cxPSeT8va0780dpZY2gGPzydvg7MO5fYY2Oh kLd3KHBZBB/1tfYKDqwN0gFEsJp7xf2+cwfWDoajhIcOOU5SC/pUDJaIFwCgw/RIrR5l SyDpPQ5k0o8lsPn1jQGd+ABar8AF/rNnBZDHzHo1ZI/ORdO51LXW1Mgx2hr2Tp7Eo9Vm 1Kcak02my7uDQsxsGUUAwF568E+y1KHEecZYVoyykE5pU+i4bDUlWyhyHCXkful8sA/z m1pQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=YsEdvLSqshkQAKsr6hOPBmd5nkHl6aHOD1uqXbjxBps=; b=SocW/kEj1sjS0/KkGN9pprGAjbIEbg5CCJDvt6ciERTMp03fQ5QBKu6xS2gx6Gini7 YOgBurr66EsBSDZ8ttOUjvD8HzvVwrawxfTj9ximnVngSw+npR15KBF/HSFVixd4YMzq EZ00tDkWuxcjc/YVMpeA6kdPgHzA2mFtkkwAoSifaHWWuY4N657l0NiCvuSAskq6yUww BhinlNUXhrOtViO+awjhiViOweAqfH2y9uIITFjMqoMQAt09HvME+KLEYPrDOsT9CjxB 96Io4KWm/hHB8a3MW8RK2S68E400EgkrWhcho92tSYLT55rgcDYEYtqX+DonbSCsr0pu yZGA== X-Gm-Message-State: APjAAAWdM0Kpk6OGv9H81zz8cSFkc4hg04CYXF5YI3adCxHVB7twRlfR R7UUSYTzchNv6OnwDX3Z7xPEuDZZ X-Google-Smtp-Source: APXvYqyE/ix40hJWKggx9LGza4SIxbY2YL0VAbnM8y5of/UN4Kqt8hK8dapqqmS5eMVVL0XyTlfu5Q== X-Received: by 2002:a2e:97d3:: with SMTP id m19mr3225729ljj.56.1573318872490; Sat, 09 Nov 2019 09:01:12 -0800 (PST) Received: from [192.168.2.145] (94-29-10-250.dynamic.spd-mgts.ru. [94.29.10.250]) by smtp.googlemail.com with ESMTPSA id u27sm4069847lfl.34.2019.11.09.09.01.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 09 Nov 2019 09:01:11 -0800 (PST) Subject: Re: [PATCH v2] drm/tegra: Turn off and reset hardware across suspend-resume From: Dmitry Osipenko To: Thierry Reding Cc: dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org References: <20190811183932.15850-1-digetx@gmail.com> Message-ID: <4280db25-98cb-b47b-06c8-0666f364dea3@gmail.com> Date: Sat, 9 Nov 2019 20:01:10 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: <20190811183932.15850-1-digetx@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 11.08.2019 21:39, Dmitry Osipenko пишет: > The drivers core bumps runtime PM refcount during of entering into > suspend to workaround some problem where parent device may become turned > off before its children. In order to disable and reset CRTCs/HDMI/etc > hardware, the runtime PM needs to be "forced" into suspend mode. > > Signed-off-by: Dmitry Osipenko > --- Hello Thierry, Is there any particular reason why you're skipping this patch? The driver's suspend-resume doesn't work properly without it.