[PATCH 5/8] of/irq: Fix device node refcount leakage in API of_irq_parse_one()

[Zijun Hu]

From: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>

For of_irq_parse_one(), refcount of device node @out_irq->np was got by
successful of_parse_phandle_with_args() invocation, but it does not put
the refcount before return, so causes the device node refcount leakage.

Fix by putting the node's refcount before return as the other branch does.

Fixes: 79d9701559a9 ("of/irq: create interrupts-extended property")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
---
 drivers/of/irq.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 64c005dfa23bd157d891f3f10526327deb5e2cfa..e5a9e24a5bd3606a57a07d0d12d3e774e9c78977 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -373,8 +373,11 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
 	/* Try the new-style interrupts-extended first */
 	res = of_parse_phandle_with_args(device, "interrupts-extended",
 					"#interrupt-cells", index, out_irq);
-	if (!res)
-		return of_irq_parse_raw(addr_buf, out_irq);
+	if (!res) {
+		p = out_irq->np;
+		res = of_irq_parse_raw(addr_buf, out_irq);
+		goto out;
+	}
 
 	/* Look for the interrupt parent. */
 	p = of_irq_find_parent(device);

-- 
2.34.1