From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: [PATCH 67/76] PNPACPI: Fix device ref leaking in acpi_pnp_match Date: Fri, 30 Mar 2012 06:14:10 -0400 Message-ID: <89e96ada572fb216e582dbe3f64e1a6939a37f74.1333101989.git.len.brown@intel.com> References: <1333102459-23750-1-git-send-email-lenb@kernel.org> Reply-To: Len Brown Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-reply-to: <1333102459-23750-1-git-send-email-lenb@kernel.org> In-reply-to: <09f98a825a821f7a3f1b162f9ed023f37213a63b.1333101989.git.len.brown@intel.com> References: <09f98a825a821f7a3f1b162f9ed023f37213a63b.1333101989.git.len.brown@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: linux-acpi@vger.kernel.org, linux-pm@lists.linux-foundation.org Cc: Len Brown , Yinghai Lu , linux-kernel@vger.kernel.org, stable@vger.kernel.org List-Id: linux-pm@vger.kernel.org From: Yinghai Lu During testing pci root bus removal, found some root bus bridge is not freed. If booting with pnpacpi=off, those hostbridge could be freed without problem. It turns out that some devices reference are not released during acpi_pnp_match. that match should not hold one device ref during every calling. Add pu_device calling before returning. Signed-off-by: Yinghai Lu Cc: stable@vger.kernel.org Signed-off-by: Len Brown --- drivers/pnp/pnpacpi/core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c index b00c176..d21e8f5 100644 --- a/drivers/pnp/pnpacpi/core.c +++ b/drivers/pnp/pnpacpi/core.c @@ -321,9 +321,14 @@ static int __init acpi_pnp_match(struct device *dev, void *_pnp) { struct acpi_device *acpi = to_acpi_device(dev); struct pnp_dev *pnp = _pnp; + struct device *physical_device; + + physical_device = acpi_get_physical_device(acpi->handle); + if (physical_device) + put_device(physical_device); /* true means it matched */ - return !acpi_get_physical_device(acpi->handle) + return !physical_device && compare_pnp_id(pnp->id, acpi_device_hid(acpi)); } -- 1.7.10.rc2.19.gfae9d