From patchwork Sun Sep 2 21:50:52 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinghai Lu X-Patchwork-Id: 1397151 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id B9E2BDF283 for ; Sun, 2 Sep 2012 21:51:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755704Ab2IBVvj (ORCPT ); Sun, 2 Sep 2012 17:51:39 -0400 Received: from rcsinet15.oracle.com ([148.87.113.117]:23390 "EHLO rcsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755557Ab2IBVvK (ORCPT ); Sun, 2 Sep 2012 17:51:10 -0400 Received: from ucsinet21.oracle.com (ucsinet21.oracle.com [156.151.31.93]) by rcsinet15.oracle.com (Sentrion-MTA-4.2.2/Sentrion-MTA-4.2.2) with ESMTP id q82Lp1BP028226 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Sun, 2 Sep 2012 21:51:01 GMT Received: from acsmt357.oracle.com (acsmt357.oracle.com [141.146.40.157]) by ucsinet21.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id q82Lp0HC010314 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 2 Sep 2012 21:51:00 GMT Received: from abhmt108.oracle.com (abhmt108.oracle.com [141.146.116.60]) by acsmt357.oracle.com (8.12.11.20060308/8.12.11) with ESMTP id q82Lp0iG028948; Sun, 2 Sep 2012 16:51:00 -0500 Received: from linux-siqj.site (/75.55.221.75) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sun, 02 Sep 2012 14:50:59 -0700 From: Yinghai Lu To: Bjorn Helgaas , 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 part2 5/6] PCI, x86: Add pcibios_fw_addr_done Date: Sun, 2 Sep 2012 14:50:52 -0700 Message-Id: <1346622653-30741-6-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.7.7 In-Reply-To: <1346622653-30741-1-git-send-email-yinghai@kernel.org> References: <1346622653-30741-1-git-send-email-yinghai@kernel.org> X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Use it to skip not needed function after pcibios_fw_addr_list_del is called. for pci root bus hot add, we will need to use pcibios_allocate_dev_resources(), and don't want to mess up with fw_addr. Signed-off-by: Yinghai Lu --- arch/x86/pci/i386.c | 10 +++++++++- 1 files changed, 9 insertions(+), 1 deletions(-) diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c index 4fdf0b2..abf2a61 100644 --- a/arch/x86/pci/i386.c +++ b/arch/x86/pci/i386.c @@ -51,6 +51,7 @@ struct pcibios_fwaddrmap { static LIST_HEAD(pcibios_fwaddrmappings); static DEFINE_SPINLOCK(pcibios_fwaddrmap_lock); +static bool pcibios_fw_addr_done; /* Must be called with 'pcibios_fwaddrmap_lock' lock held. */ static struct pcibios_fwaddrmap *pcibios_fwaddrmap_lookup(struct pci_dev *dev) @@ -72,6 +73,9 @@ pcibios_save_fw_addr(struct pci_dev *dev, int idx, resource_size_t fw_addr) unsigned long flags; struct pcibios_fwaddrmap *map; + if (pcibios_fw_addr_done) + return; + spin_lock_irqsave(&pcibios_fwaddrmap_lock, flags); map = pcibios_fwaddrmap_lookup(dev); if (!map) { @@ -97,6 +101,9 @@ resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx) struct pcibios_fwaddrmap *map; resource_size_t fw_addr = 0; + if (pcibios_fw_addr_done) + return fw_addr; + spin_lock_irqsave(&pcibios_fwaddrmap_lock, flags); map = pcibios_fwaddrmap_lookup(dev); if (map) @@ -106,7 +113,7 @@ resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx) return fw_addr; } -static void pcibios_fw_addr_list_del(void) +static void __init pcibios_fw_addr_list_del(void) { unsigned long flags; struct pcibios_fwaddrmap *entry, *next; @@ -118,6 +125,7 @@ static void pcibios_fw_addr_list_del(void) kfree(entry); } spin_unlock_irqrestore(&pcibios_fwaddrmap_lock, flags); + pcibios_fw_addr_done = true; } static int