From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com ([192.55.52.88]:15334 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754869AbbCCEXH (ORCPT ); Mon, 2 Mar 2015 23:23:07 -0500 From: Jiang Liu To: "Rafael J . Wysocki" , Thomas Voegtle , Hudd , Prakash Punnoor , Francois Romieu , Dave Airlie , Marcel Holtmann , Bjorn Helgaas , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org Cc: Jiang Liu , 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: Tue, 3 Mar 2015 12:25:40 +0800 Message-Id: <1425356741-26789-2-git-send-email-jiang.liu@linux.intel.com> In-Reply-To: <1425356741-26789-1-git-send-email-jiang.liu@linux.intel.com> References: <1425356741-26789-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-pci-owner@vger.kernel.org List-ID: 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 | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index 6ac273832f28..e4695985f9de 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 +345,13 @@ 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) == 0 || + (entry->res->flags & IORESOURCE_DISABLED)) + resource_list_destroy_entry(entry); + else + entry->res->name = info->name; + } } struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) -- 1.7.10.4