From patchwork Tue May 14 02:28:21 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinghai Lu X-Patchwork-Id: 243570 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 050C42C00B8 for ; Tue, 14 May 2013 12:29:18 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756010Ab3ENC2t (ORCPT ); Mon, 13 May 2013 22:28:49 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:19427 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755829Ab3ENC2t (ORCPT ); Mon, 13 May 2013 22:28:49 -0400 Received: from acsinet22.oracle.com (acsinet22.oracle.com [141.146.126.238]) by aserp1040.oracle.com (Sentrion-MTA-4.3.1/Sentrion-MTA-4.3.1) with ESMTP id r4E2ShEL011284 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 14 May 2013 02:28:44 GMT Received: from aserz7021.oracle.com (aserz7021.oracle.com [141.146.126.230]) by acsinet22.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id r4E2Sg6E014799 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Tue, 14 May 2013 02:28:43 GMT Received: from abhmt109.oracle.com (abhmt109.oracle.com [141.146.116.61]) by aserz7021.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id r4E2SgmW012697; Tue, 14 May 2013 02:28:42 GMT Received: from linux-siqj.site (/75.36.254.174) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 13 May 2013 19:28:41 -0700 From: Yinghai Lu To: Bjorn Helgaas Cc: Gu Zheng , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Yinghai Lu Subject: [PATCH 2/7] PCI: move resources and bus_list releasing to pci_release_dev Date: Mon, 13 May 2013 19:28:21 -0700 Message-Id: <1368498506-25857-3-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1368498506-25857-1-git-send-email-yinghai@kernel.org> References: <1368498506-25857-1-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 We should not release resource in pci_destroy that is too early as there could be still other use hold reference. release them or remove it from bus devices list at last in pci_release_dev instead. Signed-off-by: Yinghai Lu --- drivers/pci/probe.c | 20 ++++++++++++++++++++ drivers/pci/remove.c | 19 ------------------- 2 files changed, 20 insertions(+), 19 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Index: linux-2.6/drivers/pci/probe.c =================================================================== --- linux-2.6.orig/drivers/pci/probe.c +++ linux-2.6/drivers/pci/probe.c @@ -1118,6 +1118,20 @@ static void pci_release_capabilities(str pci_free_cap_save_buffers(dev); } +static void pci_free_resources(struct pci_dev *dev) +{ + int i; + + msi_remove_pci_irq_vectors(dev); + + pci_cleanup_rom(dev); + for (i = 0; i < PCI_NUM_RESOURCES; i++) { + struct resource *res = dev->resource + i; + if (res->parent) + release_resource(res); + } +} + /** * pci_release_dev - free a pci device structure when all users of it are finished. * @dev: device that's been disconnected @@ -1130,6 +1144,12 @@ static void pci_release_dev(struct devic struct pci_dev *pci_dev; pci_dev = to_pci_dev(dev); + + down_write(&pci_bus_sem); + list_del(&pci_dev->bus_list); + up_write(&pci_bus_sem); + pci_free_resources(pci_dev); + pci_release_capabilities(pci_dev); pci_release_of_node(pci_dev); kfree(pci_dev); Index: linux-2.6/drivers/pci/remove.c =================================================================== --- linux-2.6.orig/drivers/pci/remove.c +++ linux-2.6/drivers/pci/remove.c @@ -3,20 +3,6 @@ #include #include "pci.h" -static void pci_free_resources(struct pci_dev *dev) -{ - int i; - - msi_remove_pci_irq_vectors(dev); - - pci_cleanup_rom(dev); - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *res = dev->resource + i; - if (res->parent) - release_resource(res); - } -} - static void pci_stop_dev(struct pci_dev *dev) { pci_pme_active(dev, false); @@ -34,11 +20,6 @@ static void pci_stop_dev(struct pci_dev static void pci_destroy_dev(struct pci_dev *dev) { - down_write(&pci_bus_sem); - list_del(&dev->bus_list); - up_write(&pci_bus_sem); - - pci_free_resources(dev); put_device(&dev->dev); }