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 808D8C4332F for ; Wed, 2 Nov 2022 03:10:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230027AbiKBDK3 (ORCPT ); Tue, 1 Nov 2022 23:10:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230087AbiKBDK1 (ORCPT ); Tue, 1 Nov 2022 23:10:27 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE1DC22B11 for ; Tue, 1 Nov 2022 20:10:26 -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 62308616DB for ; Wed, 2 Nov 2022 03:10:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 08C15C433D7; Wed, 2 Nov 2022 03:10:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1667358625; bh=FrMMh8+uBK86guETAnTqt2v+yHWUyc4yU71dZaOnNyI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BSIH4QMaPE4h5XRowVvz8m7YWiikmVdeWkgwhpQeHNFIM5vtDmqBObomLYyHeN76C KMn+Tzc1nQXf9sId8M/IM79E+Yq+60vpypePZKS8GDMR+rZkpIUSetsPrImm9v0+UL RxxhVrxBR+UWLL5ephpp3NN4pxXe3vsURu6XMfL0= 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 5.15 104/132] PM: domains: Fix handling of unavailable/disabled idle states Date: Wed, 2 Nov 2022 03:33:30 +0100 Message-Id: <20221102022102.387061620@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221102022059.593236470@linuxfoundation.org> References: <20221102022059.593236470@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 7f3d21e6fdfb..94fe30c187ad 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2889,6 +2889,10 @@ 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