From patchwork Thu Aug 20 09:18:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 265248 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 B3D19C433E1 for ; Thu, 20 Aug 2020 14:11:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 82A4120724 for ; Thu, 20 Aug 2020 14:11:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597932662; bh=6Ph9bjp28ZJvGhNXbLdFvK04Ec5xSbH1QX9g4Ch7iaQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Jy7XoQ3ZIHkTVWw4Bh4gBA5BNx6Sq5QR0SSNjwE8iNwVwd5X5buzbMcK5e2TNqzlV kq7G35gtdjaWr/0o1+Tj/3atFHHUDDFz4x51TwcCs6tDQvcXYnm4bv+MzWXBhr68yt 7VTf4PEm5jvbrhqmExlVF7wGGusTM/7UxrEz6Vqs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730028AbgHTNyb (ORCPT ); Thu, 20 Aug 2020 09:54:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:35958 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727929AbgHTJ0r (ORCPT ); Thu, 20 Aug 2020 05:26:47 -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 8DD5822D04; Thu, 20 Aug 2020 09:26:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597915607; bh=6Ph9bjp28ZJvGhNXbLdFvK04Ec5xSbH1QX9g4Ch7iaQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YAOlR8l2asklr49WHkOpiIiDsLgUtAtDIcKSW34tRdZnjPT0DuuAb8ZJdQzcqse3e KV1uK8ukdsVm6XoIBr+3J32ndHl/kNIX26ertlUpfVn/SgkVJZIbWamlH1lS1J7Qkt J9CNgS1Njl+0jmF+DSba/1t4Kj2mPGZnUTZY3Nd8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Huacai Chen , Thomas Bogendoerfer Subject: [PATCH 5.8 073/232] MIPS: CPU#0 is not hotpluggable Date: Thu, 20 Aug 2020 11:18:44 +0200 Message-Id: <20200820091616.342176412@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091612.692383444@linuxfoundation.org> References: <20200820091612.692383444@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 "