From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753843AbbCBJtG (ORCPT ); Mon, 2 Mar 2015 04:49:06 -0500 Received: from mga03.intel.com ([134.134.136.65]:1613 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753764AbbCBJtD (ORCPT ); Mon, 2 Mar 2015 04:49:03 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,674,1418112000"; d="scan'208";a="659109476" 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 17:51:37 +0800 Message-Id: <1425289898-22377-2-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1425289898-22377-1-git-send-email-jiang.liu@linux.intel.com> References: <1425289898-22377-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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) -- 1.7.10.4