linux-kernel - [PATCH] bus: arm-cci: Add of_node

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Date:   Thu, 15 Aug 2019 11:31:27 +0530
From:   Nishka Dasgupta <nishkadg.linux@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Nishka Dasgupta <nishkadg.linux@...il.com>
Subject: [PATCH] bus: arm-cci: Add of_node_put() before break

Each iteration of for_each_child_of_node puts the previous node, but
in the case of a break from the middle of the loop, there is no put,
thus causing a memory leak. Add an of_node_put before the break.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@...il.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)) {
-- 
2.19.1