From 69adea738eb2be70b4753dbb60eb1de9abbfb4dc Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Wed, 27 Feb 2019 12:40:39 +0800 Subject: [PATCH] PCI: rockchip: Fix a leaked reference by adding missing of_node_put() The call to of_get_child_by_name() returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear() also calls of_node_get() to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/pcie-rockchip-host.c:729:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 718, but without a corresponding object release within this function. ./drivers/pci/controller/pcie-rockchip-host.c:732:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 718, but without a corresponding object release within this function. Signed-off-by: Wen Yang Signed-off-by: Lorenzo Pieralisi Cc: Shawn Lin Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Heiko Stuebner Cc: linux-pci@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/pcie-rockchip-host.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index 1372d27..8d20f17 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -724,6 +724,7 @@ static int rockchip_pcie_init_irq_domain(struct rockchip_pcie *rockchip) rockchip->irq_domain = irq_domain_add_linear(intc, PCI_NUM_INTX, &intx_domain_ops, rockchip); + of_node_put(intc); if (!rockchip->irq_domain) { dev_err(dev, "failed to get a INTx IRQ domain\n"); return -EINVAL; -- 2.7.4