powerpc/iommu: Add missing of_node_put in iommu_init_early_dart (cb4f2dc5) · Commits · e / devices / android_kernel_fairphone_FP5

[ Upstream commit 57b742a5b8945118022973e6416b71351df512fb ] 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 Signed-off-by:

Sasha Levin <sashal@kernel.org>

arch/powerpc/sysdev/dart_iommu.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -403,9 +403,10 @@ 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
		@@ -418,6 +419,7 @@ 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