From patchwork Fri Jan 11 22:40:48 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinghai Lu X-Patchwork-Id: 1967761 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@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 09156E00D8 for ; Fri, 11 Jan 2013 22:42:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755879Ab3AKWlo (ORCPT ); Fri, 11 Jan 2013 17:41:44 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:38489 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756096Ab3AKWlY (ORCPT ); Fri, 11 Jan 2013 17:41:24 -0500 Received: from acsinet22.oracle.com (acsinet22.oracle.com [141.146.126.238]) by aserp1040.oracle.com (Sentrion-MTA-4.2.2/Sentrion-MTA-4.2.2) with ESMTP id r0BMfFn5013582 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 11 Jan 2013 22:41:16 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 r0BMfFau013893 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 11 Jan 2013 22:41:15 GMT Received: from abhmt117.oracle.com (abhmt117.oracle.com [141.146.116.69]) by acsmt357.oracle.com (8.12.11.20060308/8.12.11) with ESMTP id r0BMfFcP019249; Fri, 11 Jan 2013 16:41:15 -0600 Received: from linux-siqj.site (/10.132.126.191) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 11 Jan 2013 14:41:14 -0800 From: Yinghai Lu To: Bjorn Helgaas , "Rafael J. Wysocki" , Len Brown , Taku Izumi , Jiang Liu Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Yinghai Lu Subject: [PATCH v8 21/22] PCI: add match_driver in struct pci_dev Date: Fri, 11 Jan 2013 14:40:48 -0800 Message-Id: <1357944049-29620-22-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1357944049-29620-1-git-send-email-yinghai@kernel.org> References: <1357944049-29620-1-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 with that we could move out attaching driver for pci device, out of device_add for pci hot add path. pci_bus_attach_device() will attach driver to pci device. Signed-off-by: Yinghai Lu --- drivers/pci/bus.c | 10 ++++++++++ drivers/pci/pci-driver.c | 6 +++++- include/linux/pci.h | 1 + 3 files changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 5f9c728..1f5916a 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -160,6 +160,15 @@ pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, void __weak pcibios_resource_survey_bus(struct pci_bus *bus) { } +static void pci_bus_attach_device(struct pci_dev *dev) +{ + int ret; + + dev->match_driver = true; + ret = device_attach(&dev->dev); + WARN_ON(ret < 0); +} + /** * pci_bus_add_device - add a single device * @dev: device to add @@ -181,6 +190,7 @@ int pci_bus_add_device(struct pci_dev *dev) if (retval) return retval; + pci_bus_attach_device(dev); dev->is_added = 1; pci_proc_attach_device(dev); pci_create_sysfs_dev_files(dev); diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index f79cbcd..acdcc3c 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -1186,9 +1186,13 @@ pci_dev_driver(const struct pci_dev *dev) static int pci_bus_match(struct device *dev, struct device_driver *drv) { struct pci_dev *pci_dev = to_pci_dev(dev); - struct pci_driver *pci_drv = to_pci_driver(drv); + struct pci_driver *pci_drv; const struct pci_device_id *found_id; + if (!pci_dev->match_driver) + return 0; + + pci_drv = to_pci_driver(drv); found_id = pci_match_device(pci_drv, pci_dev); if (found_id) return 1; diff --git a/include/linux/pci.h b/include/linux/pci.h index 907b455..d73af08 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -286,6 +286,7 @@ struct pci_dev { unsigned int irq; struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ + bool match_driver; /* These fields are used by common fixups */ unsigned int transparent:1; /* Transparent PCI bridge */ unsigned int multifunction:1;/* Part of multi-function device */