From patchwork Mon Mar 13 18:28:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 662919 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 92257C6FD19 for ; Mon, 13 Mar 2023 18:32:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231379AbjCMScj (ORCPT ); Mon, 13 Mar 2023 14:32:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34584 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231332AbjCMScC (ORCPT ); Mon, 13 Mar 2023 14:32:02 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E3DB84F64; Mon, 13 Mar 2023 11:31:09 -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 ams.source.kernel.org (Postfix) with ESMTPS id D9C33B811DA; Mon, 13 Mar 2023 18:29:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 530E2C433D2; Mon, 13 Mar 2023 18:29:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678732196; bh=Gw4rh6R98Knq0Cq2eoi4WmQjdtPb9YzLDaUDTvYSyIs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MXQiJ/sOvMKEbSllYfbGFpuz/RgUg5CL/sD49Lh4spZhIDmKdLEASRxJu6F9OEWo0 RgzpjuRpFz58tWFPvKUPt4XvmamKX1LQkc1r8RsUMfD5lBfDacU34gNkrwlaT2YVp6 aHyiZWw6EZxnraqJjj3f8guM0QKdDU5EReUhzjm0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: rafael@kernel.org, Greg Kroah-Hartman , Viresh Kumar , Srinivas Pandruvada , Len Brown , linux-pm@vger.kernel.org Subject: [PATCH 03/36] cpufreq: move to use bus_get_dev_root() Date: Mon, 13 Mar 2023 19:28:45 +0100 Message-Id: <20230313182918.1312597-3-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230313182918.1312597-1-gregkh@linuxfoundation.org> References: <20230313182918.1312597-1-gregkh@linuxfoundation.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2441; i=gregkh@linuxfoundation.org; h=from:subject; bh=Gw4rh6R98Knq0Cq2eoi4WmQjdtPb9YzLDaUDTvYSyIs=; b=owGbwMvMwCRo6H6F97bub03G02pJDCn82aUPCutMtKUNNhs9LOG6X3qh53xLZZPN5WkBnW9v2 0jrfvjZEcvCIMjEICumyPJlG8/R/RWHFL0MbU/DzGFlAhnCwMUpABNpqWeYH8otv4JPk5/ZeF3G 1QuTZM/qX97jxLBg1nPrCtdFvUvuvBAtKcluuPdCf8oEAA== X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Direct access to the struct bus_type dev_root pointer is going away soon so replace that with a call to bus_get_dev_root() instead, which is what it is there for. Cc: "Rafael J. Wysocki" Cc: Viresh Kumar Cc: Srinivas Pandruvada Cc: Len Brown Cc: linux-pm@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Acked-by: Rafael J. Wysocki --- Note, this is a patch that is a prepatory cleanup as part of a larger series of patches that is working on resolving some old driver core design mistakes. It will build and apply cleanly on top of 6.3-rc2 on its own, but I'd prefer if I could take it through my driver-core tree so that the driver core changes can be taken through there for 6.4-rc1. drivers/cpufreq/cpufreq.c | 7 ++++++- drivers/cpufreq/intel_pstate.c | 7 +++++-- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 6d8fd3b8dcb5..6ad3119b8e15 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2932,11 +2932,16 @@ EXPORT_SYMBOL_GPL(cpufreq_unregister_driver); static int __init cpufreq_core_init(void) { struct cpufreq_governor *gov = cpufreq_default_governor(); + struct device *dev_root; if (cpufreq_disabled()) return -ENODEV; - cpufreq_global_kobject = kobject_create_and_add("cpufreq", &cpu_subsys.dev_root->kobj); + dev_root = bus_get_dev_root(&cpu_subsys); + if (dev_root) { + cpufreq_global_kobject = kobject_create_and_add("cpufreq", &dev_root->kobj); + put_device(dev_root); + } BUG_ON(!cpufreq_global_kobject); if (!strlen(default_governor)) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 48a4613cef1e..102cf7f0ac63 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1473,10 +1473,13 @@ static struct kobject *intel_pstate_kobject; static void __init intel_pstate_sysfs_expose_params(void) { + struct device *dev_root = bus_get_dev_root(&cpu_subsys); int rc; - intel_pstate_kobject = kobject_create_and_add("intel_pstate", - &cpu_subsys.dev_root->kobj); + if (dev_root) { + intel_pstate_kobject = kobject_create_and_add("intel_pstate", &dev_root->kobj); + put_device(dev_root); + } if (WARN_ON(!intel_pstate_kobject)) return;