From patchwork Fri Jan 11 22:40:31 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinghai Lu X-Patchwork-Id: 1968181 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 51BBEDF2A2 for ; Fri, 11 Jan 2013 22:46:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754913Ab3AKWqK (ORCPT ); Fri, 11 Jan 2013 17:46:10 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:38394 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753202Ab3AKWlO (ORCPT ); Fri, 11 Jan 2013 17:41:14 -0500 Received: from acsinet21.oracle.com (acsinet21.oracle.com [141.146.126.237]) by aserp1040.oracle.com (Sentrion-MTA-4.2.2/Sentrion-MTA-4.2.2) with ESMTP id r0BMf3kp013470 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 11 Jan 2013 22:41:04 GMT Received: from acsmt358.oracle.com (acsmt358.oracle.com [141.146.40.158]) by acsinet21.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id r0BMf2NA011595 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 11 Jan 2013 22:41:02 GMT Received: from abhmt117.oracle.com (abhmt117.oracle.com [141.146.116.69]) by acsmt358.oracle.com (8.12.11.20060308/8.12.11) with ESMTP id r0BMf25F019067; Fri, 11 Jan 2013 16:41:02 -0600 Received: from linux-siqj.site (/10.132.126.191) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 11 Jan 2013 14:41:02 -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 Subject: [PATCH v8 04/22] PCI: Fix a device reference count leakage issue in pci_dev_present() Date: Fri, 11 Jan 2013 14:40:31 -0800 Message-Id: <1357944049-29620-5-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: acsinet21.oracle.com [141.146.126.237] Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Jiang Liu Function pci_get_dev_by_id() will hold a reference count on the pci device returned, so pci_dev_present() should release the corresponding reference count to avoid memory leakage. Signed-off-by: Jiang Liu Acked-by: Rafael J. Wysocki --- drivers/pci/search.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/pci/search.c b/drivers/pci/search.c index bf969ba..d0627fa 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -319,13 +319,13 @@ int pci_dev_present(const struct pci_device_id *ids) WARN_ON(in_interrupt()); while (ids->vendor || ids->subvendor || ids->class_mask) { found = pci_get_dev_by_id(ids, NULL); - if (found) - goto exit; + if (found) { + pci_dev_put(found); + return 1; + } ids++; } -exit: - if (found) - return 1; + return 0; } EXPORT_SYMBOL(pci_dev_present);