From: Miaoqian Lin Date: Sun, 5 Jun 2022 05:51:23 +0000 (+0400) Subject: PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains() X-Git-Tag: v5.18.18~537 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6cd5f93b5c6a66c68a91dbc604a78207252ecd43;p=thirdparty%2Fkernel%2Fstable.git PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains() [ 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 Signed-off-by: Bjorn Helgaas Reviewed-by: Rob Herring Signed-off-by: Sasha Levin --- diff --git a/drivers/pci/controller/pcie-microchip-host.c b/drivers/pci/controller/pcie-microchip-host.c index 2c52a8cef7260..932b1c182149f 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; }