From: Miaoqian Lin linmq006@gmail.com
[ Upstream commit f030304fdeb87ec8f1b518c73703214aec6cc24a ]
of_get_next_child() returns a node pointer with refcount incremented, so we should use of_node_put() on it when we don't need it anymore.
mc_pcie_init_irq_domains() only calls of_node_put() in the normal path, missing it in some error paths. Add missing of_node_put() to avoid refcount leak.
Fixes: 6f15a9c9f941 ("PCI: microchip: Add Microchip PolarFire PCIe controller driver") Link: https://lore.kernel.org/r/20220605055123.59127-1-linmq006@gmail.com Signed-off-by: Miaoqian Lin linmq006@gmail.com Signed-off-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Rob Herring robh@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/controller/pcie-microchip-host.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/pci/controller/pcie-microchip-host.c b/drivers/pci/controller/pcie-microchip-host.c index dd5dba419047..7263d175b5ad 100644 --- a/drivers/pci/controller/pcie-microchip-host.c +++ b/drivers/pci/controller/pcie-microchip-host.c @@ -904,6 +904,7 @@ static int mc_pcie_init_irq_domains(struct mc_pcie *port) &event_domain_ops, port); if (!port->event_domain) { dev_err(dev, "failed to get event domain\n"); + of_node_put(pcie_intc_node); return -ENOMEM; }
@@ -913,6 +914,7 @@ static int mc_pcie_init_irq_domains(struct mc_pcie *port) &intx_domain_ops, port); if (!port->intx_domain) { dev_err(dev, "failed to get an INTx IRQ domain\n"); + of_node_put(pcie_intc_node); return -ENOMEM; }