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PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains()

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[ Upstream commit f030304fde ]

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: 6f15a9c9f9 ("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>
This commit is contained in:
Miaoqian Lin
2022-06-05 09:51:23 +04:00
committed by Greg Kroah-Hartman
parent ff1e7aea3e
commit c0ad5c7e68
1 changed files with 2 additions and 0 deletions
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2
drivers/pci/controller/pcie-microchip-host.c
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@@ -894,6 +894,7 @@ static int mc_pcie_init_irq_domains(struct mc_port *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;
}
@@ -903,6 +904,7 @@ static int mc_pcie_init_irq_domains(struct mc_port *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;
}