From: Liang He windhl@126.com
[ Upstream commit 110a1fcb6c4d55144d8179983a475f17a1d6f832 ]
In pci_add_device_node_info(), use of_node_put() to drop the reference to 'parent' returned by of_get_parent() to keep refcount balance.
Fixes: cca87d303c85 ("powerpc/pci: Refactor pci_dn") Co-authored-by: Miaoqian Lin linmq006@gmail.com Signed-off-by: Liang He windhl@126.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Reviewed-by: Tyrel Datwyler tyreld@linux.ibm.com Link: https://lore.kernel.org/r/20220701131750.240170-1-windhl@126.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/kernel/pci_dn.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c index 938ab8838ab5..aa221958007e 100644 --- a/arch/powerpc/kernel/pci_dn.c +++ b/arch/powerpc/kernel/pci_dn.c @@ -330,6 +330,7 @@ struct pci_dn *pci_add_device_node_info(struct pci_controller *hose, INIT_LIST_HEAD(&pdn->list); parent = of_get_parent(dn); pdn->parent = parent ? PCI_DN(parent) : NULL; + of_node_put(parent); if (pdn->parent) list_add_tail(&pdn->list, &pdn->parent->child_list);