From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yinghai Lu Subject: [PATCH 20/40] PCI: Fix a device reference count leakage issue in pci_dev_present() Date: Wed, 19 Sep 2012 11:54:34 -0700 Message-ID: <1348080894-23412-21-git-send-email-yinghai@kernel.org> References: <1348080894-23412-1-git-send-email-yinghai@kernel.org> Return-path: In-Reply-To: <1348080894-23412-1-git-send-email-yinghai@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Bjorn Helgaas , Len Brown , 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 List-Id: linux-acpi@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 --- drivers/pci/search.c | 10 +++++----- 1 files 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); -- 1.7.7