4.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nicholas Mc Guire <hofrat@xxxxxxxxx>
[ Upstream commit 3dc6ddfedc2818eaaa36842fbb049191e0c5e50f ]
The call to of_get_next_child() returns a node pointer with refcount
incremented thus it must be explicitly decremented here in the error
path and after the last usage.
Fixes: d3c68e0a7e34 ("PCI: faraday: Add Faraday Technology FTPCI100 PCI Host Bridge driver")
Signed-off-by: Nicholas Mc Guire <hofrat@xxxxxxxxx>
[lorenzo.pieralisi@xxxxxxx: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/host/pci-ftpci100.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/pci/host/pci-ftpci100.c
+++ b/drivers/pci/host/pci-ftpci100.c
@@ -353,11 +353,13 @@ static int faraday_pci_setup_cascaded_ir
irq = of_irq_get(intc, 0);
if (irq <= 0) {
dev_err(p->dev, "failed to get parent IRQ\n");
+ of_node_put(intc);
return irq ?: -EINVAL;
}
p->irqdomain = irq_domain_add_linear(intc, PCI_NUM_INTX,
&faraday_pci_irqdomain_ops, p);
+ of_node_put(intc);
if (!p->irqdomain) {
dev_err(p->dev, "failed to create Gemini PCI IRQ domain\n");
return -EINVAL;
