From patchwork Fri Apr 8 00:15:16 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinghai Lu X-Patchwork-Id: 8778121 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 C62C1C0554 for ; Fri, 8 Apr 2016 00:16:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EAAF320204 for ; Fri, 8 Apr 2016 00:16:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 12AF720222 for ; Fri, 8 Apr 2016 00:16:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753186AbcDHAQy (ORCPT ); Thu, 7 Apr 2016 20:16:54 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:42141 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751706AbcDHAQx (ORCPT ); Thu, 7 Apr 2016 20:16:53 -0400 Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u380GXZj009488 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 8 Apr 2016 00:16:34 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0022.oracle.com (8.14.4/8.13.8) with ESMTP id u380GWBP001947 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 8 Apr 2016 00:16:32 GMT Received: from abhmp0005.oracle.com (abhmp0005.oracle.com [141.146.116.11]) by aserv0121.oracle.com (8.13.8/8.13.8) with ESMTP id u380GUfi019226; Fri, 8 Apr 2016 00:16:30 GMT Received: from aserv0022.oracle.com (/10.132.126.127) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 07 Apr 2016 17:16:30 -0700 From: Yinghai Lu To: Bjorn Helgaas , David Miller , Benjamin Herrenschmidt , Linus Torvalds Cc: Wei Yang , TJ , Yijing Wang , Khalid Aziz , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Yinghai Lu Subject: [PATCH v11 03/60] PCI: Add pci_find_bus_resource() Date: Thu, 7 Apr 2016 17:15:16 -0700 Message-Id: <1460074573-7481-4-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.4.5 In-Reply-To: <1460074573-7481-1-git-send-email-yinghai@kernel.org> References: <1460074573-7481-1-git-send-email-yinghai@kernel.org> X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 Add pci_find_bus_resource() to return bus resource for input resource. In some case, we may only have bus instead of dev. It is same as pci_find_parent_resource, but take bus as input. Signed-off-by: Yinghai Lu --- drivers/pci/pci.c | 27 ++++++++++++++++----------- include/linux/pci.h | 2 ++ 2 files changed, 18 insertions(+), 11 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 25e0327..313dea5 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -414,18 +414,9 @@ int pci_find_ht_capability(struct pci_dev *dev, int ht_cap) } EXPORT_SYMBOL_GPL(pci_find_ht_capability); -/** - * pci_find_parent_resource - return resource region of parent bus of given region - * @dev: PCI device structure contains resources to be searched - * @res: child resource record for which parent is sought - * - * For given resource region of given device, return the resource - * region of parent bus the given region is contained in. - */ -struct resource *pci_find_parent_resource(const struct pci_dev *dev, - struct resource *res) +struct resource *pci_find_bus_resource(const struct pci_bus *bus, + struct resource *res) { - const struct pci_bus *bus = dev->bus; struct resource *r; int i; @@ -455,6 +446,20 @@ struct resource *pci_find_parent_resource(const struct pci_dev *dev, } return NULL; } + +/** + * pci_find_parent_resource - return resource region of parent bus of given region + * @dev: PCI device structure contains resources to be searched + * @res: child resource record for which parent is sought + * + * For given resource region of given device, return the resource + * region of parent bus the given region is contained in. + */ +struct resource *pci_find_parent_resource(const struct pci_dev *dev, + struct resource *res) +{ + return pci_find_bus_resource(dev->bus, res); +} EXPORT_SYMBOL(pci_find_parent_resource); /** diff --git a/include/linux/pci.h b/include/linux/pci.h index 004b813..795b4c7 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -807,6 +807,8 @@ void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, struct resource *res); void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, struct pci_bus_region *region); +struct resource *pci_find_bus_resource(const struct pci_bus *bus, + struct resource *res); void pcibios_scan_specific_bus(int busn); struct pci_bus *pci_find_bus(int domain, int busnr); void pci_bus_add_devices(const struct pci_bus *bus);