From patchwork Thu Aug 20 09:20:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 265421 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=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 A7AA5C433DF for ; Thu, 20 Aug 2020 12:36:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7A966207DE for ; Thu, 20 Aug 2020 12:36:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597926987; bh=6Ph9bjp28ZJvGhNXbLdFvK04Ec5xSbH1QX9g4Ch7iaQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vbfcl5/6wUuiKD9Lr3lOVfqhv5Eo2HSr5RGDgIwC7MmwzviDwUaKQoOM2Tk9I+thj COCvGctCIVrbW/ZUQ0XMIlySBnBDV64+bK/EONSI3Uv1QQsUrJZOrMSFK5ir6MFSzt NW9/nWkck+flRigoLOEzUTOoso+1EuByRNG/uj2w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729649AbgHTMg0 (ORCPT ); Thu, 20 Aug 2020 08:36:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:52266 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729253AbgHTJr7 (ORCPT ); Thu, 20 Aug 2020 05:47:59 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2EE362078D; Thu, 20 Aug 2020 09:47:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597916878; bh=6Ph9bjp28ZJvGhNXbLdFvK04Ec5xSbH1QX9g4Ch7iaQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W9nsYB/5sts59QPDI+sfruVCLUxOQV+M5DEcb/JdABogf0XrC1LvycFUGwDMglAxd 5ACn1ZK4NeveWN0wUKthQjFdl0jXf95YllfmZxFsNhRQ208oC8UrY6UfCaVzTYI7AM A+8sQb5EiiFjJ9RTtKHYpmM+MtxK++vvgoowbjwo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Huacai Chen , Thomas Bogendoerfer Subject: [PATCH 5.4 049/152] MIPS: CPU#0 is not hotpluggable Date: Thu, 20 Aug 2020 11:20:16 +0200 Message-Id: <20200820091556.214462547@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091553.615456912@linuxfoundation.org> References: <20200820091553.615456912@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Huacai Chen commit 9cce844abf07b683cff5f0273977d5f8d0af94c7 upstream. Now CPU#0 is not hotpluggable on MIPS, so prevent to create /sys/devices /system/cpu/cpu0/online which confuses some user-space tools. Cc: stable@vger.kernel.org Signed-off-by: Huacai Chen Signed-off-by: Thomas Bogendoerfer Signed-off-by: Greg Kroah-Hartman --- arch/mips/kernel/topology.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/mips/kernel/topology.c +++ b/arch/mips/kernel/topology.c @@ -20,7 +20,7 @@ static int __init topology_init(void) for_each_present_cpu(i) { struct cpu *c = &per_cpu(cpu_devices, i); - c->hotpluggable = 1; + c->hotpluggable = !!i; ret = register_cpu(c, i); if (ret) printk(KERN_WARNING "topology_init: register_cpu %d "