From patchwork Sun Jul 18 21:27:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 1506658 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=J1gpAKly; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4GSdPP5v9Rz9sS8 for ; Mon, 19 Jul 2021 07:28:09 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233058AbhGRVbH (ORCPT ); Sun, 18 Jul 2021 17:31:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232057AbhGRVbG (ORCPT ); Sun, 18 Jul 2021 17:31:06 -0400 Received: from mail-lf1-x135.google.com (mail-lf1-x135.google.com [IPv6:2a00:1450:4864:20::135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EE9DC061762; Sun, 18 Jul 2021 14:28:07 -0700 (PDT) Received: by mail-lf1-x135.google.com with SMTP id q16so26414468lfa.5; Sun, 18 Jul 2021 14:28:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=op84BjJ/v5pRydETvQx7v70LAlrmUU4TAQcmf6g0Q7s=; b=J1gpAKly38xuEmE/YY2/eIEkbftmQ//E+na4DmRYqvUUAv1tPraZbIfI5NlHBa7rfO RSaou3Z+PoTCzcKr3i0Nzm2Ky6VmAzHwH32jmdSC5W0QqlV5Xc6MwwmEF1o29zZFfuxX jTl+jDJLcCt5k4E043Um/C4wnuvJWzhc1r/1Bi+nTsxL1HBNOLZ/0zMgTcE+H2jxTYJU LZ3S7pKrWbOq4oCcKNCcXf1HG/u76uYRORgDuGw/3xzfc3MzxqnhTPyoJ/hn2rhsEbRl JB91uOoS9K6rJXIauYWasyHw7ZTJH7J/ug04fpjB1KPRpLvnPuQzFj3lofjmpfsCZu9w jr9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=op84BjJ/v5pRydETvQx7v70LAlrmUU4TAQcmf6g0Q7s=; b=IpJr4VBmqpTa26KhRm9VQIBZVZq4VgMhhKqjh3Yth2zYiR3bA/WhOSuZ8fdLk8Zcba 88Jt8FnlP4KMUKC3/HNk7E9ZQBC0qyDEm9keZ5ZLsOEnSdQyrJdkt77Cl8SMjD30WBti JKH1jmME+9+/fHcTFlPa34b53aD44jOkRUENDrrJd24QmLx6e6yugdpYNWJ7w7ZKR/JW n78RZHxbZLXZQ5m8hQNVh9e+50Y88jTNvYLaTAK4tiCKz+B8PdP7l7KX20V0oWJtEr3e 4sNnU/iQtFb7Ad9//JdQpgJcGhHLX2dq8kKPucHLCprWhf+a2nkB8LOcvfwruQJYKyPY QZRw== X-Gm-Message-State: AOAM531K0GveaqOS38/gmA8g9zCGHdcu4cQMQkVrkl6DojIZfe1x2MyW XVNCwsn84YO6VDFdL9umdtQ= X-Google-Smtp-Source: ABdhPJzfQSjWa0UnqRARkIzceZmEcBeWE0B3Sfo61ggIx2g/+0uBCVdznsHR2OvG+xkCnFUxh1o6cg== X-Received: by 2002:ac2:5b1e:: with SMTP id v30mr15506907lfn.226.1626643685603; Sun, 18 Jul 2021 14:28:05 -0700 (PDT) Received: from localhost.localdomain (46-138-17-53.dynamic.spd-mgts.ru. [46.138.17.53]) by smtp.gmail.com with ESMTPSA id c10sm1229062lfv.10.2021.07.18.14.28.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 18 Jul 2021 14:28:05 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , "Rafael J. Wysocki" , Daniel Lezcano Cc: linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 0/2] Fix Tegra PMC driver racing with cpuidle driver Date: Mon, 19 Jul 2021 00:27:04 +0300 Message-Id: <20210718212706.21659-1-digetx@gmail.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org I stumbled upon a problem where tegra-cpuidle driver is probed before Power Management controller driver in a specific kernel configuration, implicitly disabling the deepest CPU idling state. This series fixes that trouble. Dmitry Osipenko (2): soc/tegra: pmc: Prevent racing with cpuilde driver cpuidle: tegra: Check whether PMC is ready arch/arm/mach-tegra/pm.c | 2 +- arch/arm/mach-tegra/pm.h | 6 ------ arch/arm/mach-tegra/tegra.c | 2 -- drivers/cpuidle/cpuidle-tegra.c | 3 +++ drivers/soc/tegra/pmc.c | 14 +++++++++++++- include/soc/tegra/pm.h | 6 ++++++ 6 files changed, 23 insertions(+), 10 deletions(-)