From patchwork Wed Sep 19 18:54:21 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinghai Lu X-Patchwork-Id: 1480121 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 9BBD73FE79 for ; Wed, 19 Sep 2012 19:06:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756946Ab2ISTFl (ORCPT ); Wed, 19 Sep 2012 15:05:41 -0400 Received: from acsinet15.oracle.com ([141.146.126.227]:47846 "EHLO acsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755723Ab2ISSzQ (ORCPT ); Wed, 19 Sep 2012 14:55:16 -0400 Received: from acsinet22.oracle.com (acsinet22.oracle.com [141.146.126.238]) by acsinet15.oracle.com (Sentrion-MTA-4.2.2/Sentrion-MTA-4.2.2) with ESMTP id q8JIt5d5029574 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 19 Sep 2012 18:55:06 GMT Received: from acsmt357.oracle.com (acsmt357.oracle.com [141.146.40.157]) by acsinet22.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id q8JIt4Mw014141 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 19 Sep 2012 18:55:05 GMT Received: from abhmt109.oracle.com (abhmt109.oracle.com [141.146.116.61]) by acsmt357.oracle.com (8.12.11.20060308/8.12.11) with ESMTP id q8JIt35B016291; Wed, 19 Sep 2012 13:55:03 -0500 Received: from linux-siqj.site (/10.132.126.191) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 19 Sep 2012 11:55:03 -0700 From: Yinghai Lu To: Bjorn Helgaas , Len Brown , Taku Izumi , Jiang Liu , x86 Cc: Andrew Morton , Linus Torvalds , Greg Kroah-Hartman , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Yinghai Lu Subject: [PATCH 07/40] x86, PCI: Separate pcibios_allocate_bridge_resources() Date: Wed, 19 Sep 2012 11:54:21 -0700 Message-Id: <1348080894-23412-8-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.7.7 In-Reply-To: <1348080894-23412-1-git-send-email-yinghai@kernel.org> References: <1348080894-23412-1-git-send-email-yinghai@kernel.org> X-Source-IP: acsinet22.oracle.com [141.146.126.238] Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Thus pcibios_allocate_bus_resources() could more simple and clean Signed-off-by: Yinghai Lu --- arch/x86/pci/i386.c | 46 ++++++++++++++++++++++++---------------------- 1 files changed, 24 insertions(+), 22 deletions(-) diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c index dd8ca6f..9800362 100644 --- a/arch/x86/pci/i386.c +++ b/arch/x86/pci/i386.c @@ -193,34 +193,36 @@ EXPORT_SYMBOL(pcibios_align_resource); * as well. */ -static void __init pcibios_allocate_bus_resources(struct list_head *bus_list) +static void __init pcibios_allocate_bridge_resources(struct pci_dev *dev) { - struct pci_bus *bus; - struct pci_dev *dev; int idx; struct resource *r; + for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) { + r = &dev->resource[idx]; + if (!r->flags) + continue; + if (!r->start || pci_claim_resource(dev, idx) < 0) { + /* + * Something is wrong with the region. + * Invalidate the resource to prevent + * child resource allocations in this + * range. + */ + r->start = r->end = 0; + r->flags = 0; + } + } +} + +static void __init pcibios_allocate_bus_resources(struct list_head *bus_list) +{ + struct pci_bus *bus; + /* Depth-First Search on bus tree */ list_for_each_entry(bus, bus_list, node) { - if ((dev = bus->self)) { - for (idx = PCI_BRIDGE_RESOURCES; - idx < PCI_NUM_RESOURCES; idx++) { - r = &dev->resource[idx]; - if (!r->flags) - continue; - if (!r->start || - pci_claim_resource(dev, idx) < 0) { - /* - * Something is wrong with the region. - * Invalidate the resource to prevent - * child resource allocations in this - * range. - */ - r->start = r->end = 0; - r->flags = 0; - } - } - } + if (bus->self) + pcibios_allocate_bridge_resources(bus->self); pcibios_allocate_bus_resources(&bus->children); } }