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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 8AB31C43331 for ; Thu, 18 Mar 2021 18:29:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C59F64F45 for ; Thu, 18 Mar 2021 18:29:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232528AbhCRS3T (ORCPT ); Thu, 18 Mar 2021 14:29:19 -0400 Received: from cloudserver094114.home.pl ([79.96.170.134]:51570 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232291AbhCRS3N (ORCPT ); Thu, 18 Mar 2021 14:29:13 -0400 Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 2.0.3) id 90fddb0d8e680081; Thu, 18 Mar 2021 19:29:11 +0100 Received: from kreacher.localnet (89-64-80-250.dynamic.chello.pl [89.64.80.250]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id 2A6C9668FA9; Thu, 18 Mar 2021 19:29:10 +0100 (CET) From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , Linux PM , David Box Subject: [PATCH v2 0/2] ACPI: scan: Turn off unused power resources during initialization Date: Thu, 18 Mar 2021 19:23:38 +0100 Message-ID: <3108574.44csPzL39Z@kreacher> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduledrudefiedgudduiecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufffkfgggfgtsehtufertddttddvnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvedufefggeeutdejvdfhteevgeeludevueevvdejkeelfefhudfhfeehkefffeevnecukfhppeekledrieegrdektddrvdehtdenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeekledrieegrdektddrvdehtddphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedprhgtphhtthhopehlihhnuhigqdgrtghpihesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghvihgurdgvrdgsohigsehlihhnuhigrdhinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=4 Fuz1=4 Fuz2=4 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Power resources that aren't associated with any devices are expected to be turned off by the OS, but Linux only does that during resume from suspend-to-RAM. That turns out to be problematic, so turn them off during system initialization too (patch [1/2]). In addition to that, turn them off unconditionally, without checking the current status, which should be safe and may help to work around firmware issues (patch [2/2]). Please refer to the patch changelogs for details. Thanks!