From patchwork Fri Jul 17 06:02:34 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Yang X-Patchwork-Id: 6813101 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id B6EF6C05AC for ; Fri, 17 Jul 2015 06:03:15 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id ED77F20653 for ; Fri, 17 Jul 2015 06:03:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0A3020672 for ; Fri, 17 Jul 2015 06:03:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756713AbbGQGDM (ORCPT ); Fri, 17 Jul 2015 02:03:12 -0400 Received: from e28smtp08.in.ibm.com ([122.248.162.8]:46466 "EHLO e28smtp08.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756712AbbGQGDL (ORCPT ); Fri, 17 Jul 2015 02:03:11 -0400 Received: from /spool/local by e28smtp08.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 17 Jul 2015 11:33:07 +0530 Received: from d28dlp01.in.ibm.com (9.184.220.126) by e28smtp08.in.ibm.com (192.168.1.138) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Fri, 17 Jul 2015 11:33:05 +0530 X-Helo: d28dlp01.in.ibm.com X-MailFrom: weiyang@linux.vnet.ibm.com X-RcptTo: linux-pci@vger.kernel.org Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id D6F28E006F for ; Fri, 17 Jul 2015 11:36:59 +0530 (IST) Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay03.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t6H632jw28377190 for ; Fri, 17 Jul 2015 11:33:02 +0530 Received: from d28av04.in.ibm.com (localhost [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t6H631kD014976 for ; Fri, 17 Jul 2015 11:33:01 +0530 Received: from localhost ([9.123.251.122]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id t6H630f6014930; Fri, 17 Jul 2015 11:33:01 +0530 From: Wei Yang To: gwshan@linux.vnet.ibm.com, bhelgaas@google.com, mpe@ellerman.id.au Cc: linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, Wei Yang Subject: [PATCH V9 04/11] powerpc/pci: Remove VFs prior to PF Date: Fri, 17 Jul 2015 14:02:34 +0800 Message-Id: <1437112961-17275-5-git-send-email-weiyang@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1437112961-17275-1-git-send-email-weiyang@linux.vnet.ibm.com> References: <1437112961-17275-1-git-send-email-weiyang@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15071706-0029-0000-0000-000006F9C848 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-8.1 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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 As commit ac205b7bb72f ("PCI: make sriov work with hotplug remove") indicates, VFs, which might be hooked to same PCI bus as their PF should be removed before the PF. Otherwise, the PCI hot unplugging on the PCI bus would cause kernel crash. The patch applies the above pattern to PowerPC PCI hotplug path. [gwshan: changelog] Signed-off-by: Wei Yang Acked-by: Gavin Shan --- arch/powerpc/kernel/pci-hotplug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/pci-hotplug.c b/arch/powerpc/kernel/pci-hotplug.c index 7f9ed0c..59c4361 100644 --- a/arch/powerpc/kernel/pci-hotplug.c +++ b/arch/powerpc/kernel/pci-hotplug.c @@ -55,7 +55,7 @@ void pcibios_remove_pci_devices(struct pci_bus *bus) pr_debug("PCI: Removing devices on bus %04x:%02x\n", pci_domain_nr(bus), bus->number); - list_for_each_entry_safe(dev, tmp, &bus->devices, bus_list) { + list_for_each_entry_safe_reverse(dev, tmp, &bus->devices, bus_list) { pr_debug(" Removing %s...\n", pci_name(dev)); pci_stop_and_remove_bus_device(dev); }