[PATCH] bus: arm-cci: fix device_node refcount leak in cci_probe_ports()

[PATCH] bus: arm-cci: fix device_node refcount leak in cci_probe_ports()

[Manush Prajwal]

When the number of matching child nodes reaches nb_cci_ports,
cci_probe_ports() breaks out of the for_each_available_child_of_node()
loop without releasing the reference held on the current node. Every
other exit from this loop iteration either continues (handled by the
iterator) or stores the node into ports[i].dn; this early break is the
only path that drops the last handle to the node without a matching
of_node_put(). Add it before the break.

Signed-off-by: Manush Prajwal <manushprajwal555@gmail.com>
---
 drivers/bus/arm-cci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 7f2baf0571..5ab3d74c9a 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -461,8 +461,10 @@ static int cci_probe_ports(struct device_node *np)
 
 		i = nb_ace + nb_ace_lite;
 
-		if (i >= nb_cci_ports)
+		if (i >= nb_cci_ports) {
+			of_node_put(cp);
 			break;
+		}
 
 		if (of_property_read_string(cp, "interface-type",
 					&match_str)) {
-- 
2.46.2.windows.1