From patchwork Mon Mar 2 04:33:20 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiang Liu X-Patchwork-Id: 5910001 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 D31E5BF440 for ; Mon, 2 Mar 2015 04:31:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 166E420222 for ; Mon, 2 Mar 2015 04:31:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0418720221 for ; Mon, 2 Mar 2015 04:31:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753475AbbCBEau (ORCPT ); Sun, 1 Mar 2015 23:30:50 -0500 Received: from mga01.intel.com ([192.55.52.88]:7512 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752235AbbCBEas (ORCPT ); Sun, 1 Mar 2015 23:30:48 -0500 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga101.fm.intel.com with ESMTP; 01 Mar 2015 20:30:46 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,674,1418112000"; d="scan'208";a="461151211" Received: from gerry-dev.bj.intel.com ([10.238.158.72]) by FMSMGA003.fm.intel.com with ESMTP; 01 Mar 2015 20:24:39 -0800 From: Jiang Liu To: Thomas Voegtle , Bjorn Helgaas , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org Cc: Jiang Liu , "Rafael J . Wysocki" , Dave Airlie , LKML , linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, Lv Zheng Subject: [Debug 1/2] x86/PCI/ACPI: Ignore resources consumed by host bridge itself Date: Mon, 2 Mar 2015 12:33:20 +0800 Message-Id: <1425270801-20270-2-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1425270801-20270-1-git-send-email-jiang.liu@linux.intel.com> References: <1425270801-20270-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 When parsing resources for PCI host bridge, we should ignore resources consumed by host bridge itself and only report window resources available to child PCI busses. Signed-off-by: Jiang Liu --- arch/x86/pci/acpi.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index 6ac273832f28..ddafc9e8b9b3 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -331,7 +331,7 @@ static void probe_pci_root_info(struct pci_root_info *info, struct list_head *list) { int ret; - struct resource_entry *entry; + struct resource_entry *entry, *tmp; sprintf(info->name, "PCI Bus %04x:%02x", domain, busnum); info->bridge = device; @@ -345,8 +345,12 @@ static void probe_pci_root_info(struct pci_root_info *info, dev_dbg(&device->dev, "no IO and memory resources present in _CRS\n"); else - resource_list_for_each_entry(entry, list) - entry->res->name = info->name; + resource_list_for_each_entry_safe(entry, tmp, list) { + if (entry->res->flags & IORESOURCE_WINDOW) + entry->res->name = info->name; + else + resource_list_destroy_entry(entry); + } } struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)