From patchwork Mon Dec 11 21:54:17 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 10105867 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1DED86025B for ; Mon, 11 Dec 2017 21:57:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1B8D5298E9 for ; Mon, 11 Dec 2017 21:57:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 104052991F; Mon, 11 Dec 2017 21:57:11 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6B482298E9 for ; Mon, 11 Dec 2017 21:57:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752532AbdLKV5H (ORCPT ); Mon, 11 Dec 2017 16:57:07 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:53604 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752340AbdLKV5B (ORCPT ); Mon, 11 Dec 2017 16:57:01 -0500 Received: from localhost (LFbn-1-714-204.w86-246.abo.wanadoo.fr [86.246.189.204]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id DB975D38; Mon, 11 Dec 2017 21:55:31 +0000 (UTC) Subject: Patch "x86/PCI: Make broadcom_postcore_init() check acpi_disabled" has been added to the 4.14-stable tree To: rafael.j.wysocki@intel.com, bhelgaas@google.com, dave.hansen@linux.intel.com, gregkh@linuxfoundation.org, linux-pci@vger.kernel.org, mingo@kernel.org, tglx@linutronix.de Cc: , From: Date: Mon, 11 Dec 2017 22:54:17 +0100 Message-ID: <151302925723099@kroah.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This is a note to let you know that I've just added the patch titled x86/PCI: Make broadcom_postcore_init() check acpi_disabled to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: x86-pci-make-broadcom_postcore_init-check-acpi_disabled.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. From ddec3bdee05b06f1dda20ded003c3e10e4184cab Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 1 Dec 2017 15:08:12 +0100 Subject: x86/PCI: Make broadcom_postcore_init() check acpi_disabled From: Rafael J. Wysocki commit ddec3bdee05b06f1dda20ded003c3e10e4184cab upstream. acpi_os_get_root_pointer() may return a valid address even if acpi_disabled is set, but the host bridge information from the ACPI tables is not going to be used in that case and the Broadcom host bridge initialization should not be skipped then, So make broadcom_postcore_init() check acpi_disabled too to avoid this issue. Fixes: 6361d72b04d1 (x86/PCI: read Broadcom CNB20LE host bridge info before PCI scan) Reported-by: Dave Hansen Signed-off-by: Rafael J. Wysocki Signed-off-by: Thomas Gleixner Cc: Bjorn Helgaas Cc: Linux PCI Link: https://lkml.kernel.org/r/3186627.pxZj1QbYNg@aspire.rjw.lan Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- arch/x86/pci/broadcom_bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Patches currently in stable-queue which might be from rafael.j.wysocki@intel.com are queue-4.14/x86-pci-make-broadcom_postcore_init-check-acpi_disabled.patch --- a/arch/x86/pci/broadcom_bus.c +++ b/arch/x86/pci/broadcom_bus.c @@ -97,7 +97,7 @@ static int __init broadcom_postcore_init * We should get host bridge information from ACPI unless the BIOS * doesn't support it. */ - if (acpi_os_get_root_pointer()) + if (!acpi_disabled && acpi_os_get_root_pointer()) return 0; #endif