linux-kernel - [PATCH] drivers: bus: arm: Fix resource leaks in for_each_available_child_of

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Date:   Thu,  6 Jul 2023 15:06:35 +0800
From:   Lu Hongfei <luhongfei@...o.com>
To:     Lu Hongfei <luhongfei@...o.com>, linux-kernel@...r.kernel.org
Cc:     opensource.kernel@...o.com
Subject: [PATCH] drivers: bus: arm: Fix resource leaks in for_each_available_child_of_node loop

Ensure child node references are decremented properly in
the error path.

Signed-off-by: Lu Hongfei <luhongfei@...o.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 b8184a903583..1f84a5528073 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)) {
-- 
2.39.0