diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2012-03-03 13:29:20 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-13 09:13:52 -0700 |
| commit | aa8d847d50f36deea21019df1056ec3aefc17aaf (patch) | |
| tree | 7318b7fdfd0e20690fe4793ca00a7f6bab7c561c /drivers | |
| parent | 18f96105c7335bb7e661ec6e6e046ea613d5afe3 (diff) | |
PNPACPI: Fix device ref leaking in acpi_pnp_match
commit 89e96ada572fb216e582dbe3f64e1a6939a37f74 upstream.
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 <yinghai@kernel.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pnp/pnpacpi/core.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c index b00c17612a8..d21e8f59c84 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)); } |