diff options
| author |   Peng Wu <wupeng58@huawei.com> | 2022-04-25 08:12:45 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2022-05-22 15:58:31 +1000 |
| commit | 57b742a5b8945118022973e6416b71351df512fb (patch) | |
| tree | 413a72ba5a201e71ca8e422ca2c9eeb42a4f0644 /arch/powerpc/sysdev/dart_iommu.c | |
| parent | powerpc/pseries/vas: Call misc_deregister if sysfs init fails (diff) | |
| download | linux-dev-57b742a5b8945118022973e6416b71351df512fb.tar.xz linux-dev-57b742a5b8945118022973e6416b71351df512fb.zip | |
powerpc/iommu: Add missing of_node_put in iommu_init_early_dart
The device_node pointer is returned by of_find_compatible_node
with refcount incremented. We should use of_node_put() to avoid
the refcount leak.
Signed-off-by: Peng Wu <wupeng58@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220425081245.21705-1-wupeng58@huawei.com
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/sysdev/dart_iommu.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/dart_iommu.c b/arch/powerpc/sysdev/dart_iommu.c index 610ca7074066..98096bbfd62e 100644 --- a/arch/powerpc/sysdev/dart_iommu.c +++ b/arch/powerpc/sysdev/dart_iommu.c @@ -404,9 +404,10 @@ void __init iommu_init_early_dart(struct pci_controller_ops *controller_ops) } /* Initialize the DART HW */ - if (dart_init(dn) != 0) + if (dart_init(dn) != 0) { + of_node_put(dn); return; - + } /* * U4 supports a DART bypass, we use it for 64-bit capable devices to * improve performance. However, that only works for devices connected @@ -419,6 +420,7 @@ void __init iommu_init_early_dart(struct pci_controller_ops *controller_ops) /* Setup pci_dma ops */ set_pci_dma_ops(&dma_iommu_ops); + of_node_put(dn); } #ifdef CONFIG_PM |