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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 C317DC432C0 for ; Wed, 27 Nov 2019 21:24:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 993C621556 for ; Wed, 27 Nov 2019 21:24:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574889883; bh=BGVEmFHLvjGZOll6shoHOgq10KG5rn1aBv9tgolO9tc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=p2eeW0b7h0pJfg4C6wRjAmnvQlrtkS6vwvAUXE6izvMekHqdG4KoBy+97LjT+AgS5 67JK5Bi574o62Vi4c4v13oHyZCXupSDmX8LxcEx5yy8rHb7Z4J8PO5Kjen6yq9684C nbGTP7dGRbOYaUOJP4XWX5egCQTtkwhv5b6/wrkc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731934AbfK0VCs (ORCPT ); Wed, 27 Nov 2019 16:02:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:55682 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727370AbfK0VCr (ORCPT ); Wed, 27 Nov 2019 16:02:47 -0500 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 680C22166E; Wed, 27 Nov 2019 21:02:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574888566; bh=BGVEmFHLvjGZOll6shoHOgq10KG5rn1aBv9tgolO9tc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1hwzKdW774X/5P3EpH8sH3EFpme8u7+IZuP+4CwVbxPEEC+eUB24aovDsiOufz5zy G+rzHy32zx6XoLiDNJly7RWHhvjrcwmG+qQMPC0MeCGbTybS0yaeb/YQuN9ilBVq3o ou5w/nDbNPR0aX30Zs6v7XQMOLilb99LAOyYrrAg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, David Hildenbrand , Pavel Tatashin , Rashmica Gupta , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Balbir Singh , Michael Neuling , Boris Ostrovsky , Dan Williams , Haiyang Zhang , Heiko Carstens , John Allen , Jonathan Corbet , Joonsoo Kim , Juergen Gross , Kate Stewart , "K. Y. Srinivasan" , Len Brown , Martin Schwidefsky , Mathieu Malaterre , Michal Hocko , Nathan Fontenot , Oscar Salvador , Philippe Ombredanne , "Rafael J. Wysocki" , "Rafael J. Wysocki" , Stephen Hemminger , Thomas Gleixner , Vlastimil Babka , YASUAKI ISHIMATSU , Andrew Morton , Linus Torvalds , Sasha Levin Subject: [PATCH 4.19 182/306] powerpc/powernv: hold device_hotplug_lock when calling device_online() Date: Wed, 27 Nov 2019 21:30:32 +0100 Message-Id: <20191127203128.604227621@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191127203114.766709977@linuxfoundation.org> References: <20191127203114.766709977@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: David Hildenbrand [ Upstream commit cec1680591d6d5b10ecc10f370210089416e98af ] device_online() should be called with device_hotplug_lock() held. Link: http://lkml.kernel.org/r/20180925091457.28651-5-david@redhat.com Signed-off-by: David Hildenbrand Reviewed-by: Pavel Tatashin Reviewed-by: Rashmica Gupta Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Rashmica Gupta Cc: Balbir Singh Cc: Michael Neuling Cc: Boris Ostrovsky Cc: Dan Williams Cc: Greg Kroah-Hartman Cc: Haiyang Zhang Cc: Heiko Carstens Cc: John Allen Cc: Jonathan Corbet Cc: Joonsoo Kim Cc: Juergen Gross Cc: Kate Stewart Cc: "K. Y. Srinivasan" Cc: Len Brown Cc: Martin Schwidefsky Cc: Mathieu Malaterre Cc: Michal Hocko Cc: Nathan Fontenot Cc: Oscar Salvador Cc: Philippe Ombredanne Cc: Rafael J. Wysocki Cc: "Rafael J. Wysocki" Cc: Stephen Hemminger Cc: Thomas Gleixner Cc: Vlastimil Babka Cc: YASUAKI ISHIMATSU Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- arch/powerpc/platforms/powernv/memtrace.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/powernv/memtrace.c b/arch/powerpc/platforms/powernv/memtrace.c index 232bf5987f91d..dd3cc4632b9ae 100644 --- a/arch/powerpc/platforms/powernv/memtrace.c +++ b/arch/powerpc/platforms/powernv/memtrace.c @@ -244,9 +244,11 @@ static int memtrace_online(void) * we need to online the memory ourselves. */ if (!memhp_auto_online) { + lock_device_hotplug(); walk_memory_range(PFN_DOWN(ent->start), PFN_UP(ent->start + ent->size - 1), NULL, online_mem_block); + unlock_device_hotplug(); } /* -- 2.20.1