From patchwork Wed Jul 17 14:06:11 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep KarkadaNagesha X-Patchwork-Id: 2828636 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id BFD939F9A0 for ; Wed, 17 Jul 2013 14:06:43 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DF65F201CF for ; Wed, 17 Jul 2013 14:06:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A7AE12014C for ; Wed, 17 Jul 2013 14:06:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755382Ab3GQOGj (ORCPT ); Wed, 17 Jul 2013 10:06:39 -0400 Received: from service87.mimecast.com ([91.220.42.44]:55196 "EHLO service87.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754669Ab3GQOGi (ORCPT ); Wed, 17 Jul 2013 10:06:38 -0400 Received: from cam-owa1.Emea.Arm.com (fw-tnat.cambridge.arm.com [217.140.96.21]) by service87.mimecast.com; Wed, 17 Jul 2013 15:06:36 +0100 Received: from e103737-lin.cambridge.arm.com ([10.1.255.212]) by cam-owa1.Emea.Arm.com with Microsoft SMTPSVC(6.0.3790.0); Wed, 17 Jul 2013 15:06:34 +0100 From: Sudeep.KarkadaNagesha@arm.com To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, devicetree-discuss@lists.ozlabs.org Cc: Russell King , Shawn Guo , Gregory Clement , Greg Kroah-Hartman , Viresh Kumar , "Rafael J. Wysocki" , Grant Likely , Rob Herring , Lorenzo Pieralisi , Olof Johansson , Arnd Bergmann , Sudeep KarkadaNagesha Subject: [RFC PATCH v2 02/15] driver/core: cpu: initialize of_node in cpu's device struture Date: Wed, 17 Jul 2013 15:06:11 +0100 Message-Id: <1374069984-20567-3-git-send-email-Sudeep.KarkadaNagesha@arm.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1374069984-20567-1-git-send-email-Sudeep.KarkadaNagesha@arm.com> References: <1374069984-20567-1-git-send-email-Sudeep.KarkadaNagesha@arm.com> X-OriginalArrivalTime: 17 Jul 2013 14:06:34.0212 (UTC) FILETIME=[D8426A40:01CE82F6] X-MC-Unique: 113071715063601301 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-7.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sudeep KarkadaNagesha CPUs are also registered as devices but the of_node in these cpu devices are not initialized. Currently different drivers requiring to access cpu device node are parsing the nodes themselves and initialising the of_node in cpu device. The of_node in all the cpu devices needs to be initialized properly and at one place. The best place to update this is CPU subsystem driver when registering the cpu devices. The OF/DT core library now provides of_get_cpu_node to retrieve a cpu device node for a given logical index by abstracting the architecture specific details. This patch uses of_get_cpu_node to assign of_node when registering the cpu devices. Cc: Greg Kroah-Hartman Signed-off-by: Sudeep KarkadaNagesha --- drivers/base/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index a16d20e..c0f7a08 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "base.h" @@ -289,6 +290,7 @@ int __cpuinit register_cpu(struct cpu *cpu, int num) cpu->dev.release = cpu_device_release; cpu->dev.offline_disabled = !cpu->hotpluggable; cpu->dev.offline = !cpu_online(num); + cpu->dev.of_node = of_get_cpu_node(num); #ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE cpu->dev.bus->uevent = arch_cpu_uevent; #endif