From 89e96ada572fb216e582dbe3f64e1a6939a37f74 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Sat, 3 Mar 2012 13:29:20 -0800 Subject: PNPACPI: Fix device ref leaking in acpi_pnp_match 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(-) (limited to 'drivers/pnp/pnpacpi/core.c') diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c index b00c17612a89..d21e8f59c84e 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)); } -- cgit v1.2.3