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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4FA7BC4332F for ; Wed, 2 Nov 2022 03:37:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230229AbiKBDhq (ORCPT ); Tue, 1 Nov 2022 23:37:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229971AbiKBDho (ORCPT ); Tue, 1 Nov 2022 23:37:44 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 18F032655C for ; Tue, 1 Nov 2022 20:37:44 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id AA6B461729 for ; Wed, 2 Nov 2022 03:37:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5309DC433D6; Wed, 2 Nov 2022 03:37:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1667360263; bh=rW1IYqcYQ1DD1viS3spLNZ1+QEjUnkW/V/pP8ZL/mPI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BqSf0rAWIgeItboqpeDLJLMsjk7WHNqbm+qA+KQwqUusdnoch9eWepCk6o97iCEG6 IeXs8o9Uyg3X0UeGSZVj4dNgsWpPKLuzqgNzLc79/BOlbaHzu1Qf+3upl2GIlHVvle N8Bh1uSOw4hoCWXiVJ+nOSjba6t2yTTn93oyaEVA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sudeep Holla , Ulf Hansson , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 4.19 72/78] PM: domains: Fix handling of unavailable/disabled idle states Date: Wed, 2 Nov 2022 03:34:57 +0100 Message-Id: <20221102022055.049721379@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221102022052.895556444@linuxfoundation.org> References: <20221102022052.895556444@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sudeep Holla [ Upstream commit e0c57a5c70c13317238cb19a7ded0eab4a5f7de5 ] Platforms can provide the information about the availability of each idle states via status flag. Platforms may have to disable one or more idle states for various reasons like broken firmware or other unmet dependencies. Fix handling of such unavailable/disabled idle states by ignoring them while parsing the states. Fixes: a3381e3a65cb ("PM / domains: Fix up domain-idle-states OF parsing") Signed-off-by: Sudeep Holla Reviewed-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/base/power/domain.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 52c292d0908a..e865aa4b2504 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2459,6 +2459,10 @@ static int genpd_iterate_idle_states(struct device_node *dn, np = it.node; if (!of_match_node(idle_state_match, np)) continue; + + if (!of_device_is_available(np)) + continue; + if (states) { ret = genpd_parse_state(&states[i], np); if (ret) { -- 2.35.1