linux-kernel - [PATCH AUTOSEL 6.1 19/28] thermal/of: add missing of_node

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Message-Id: <20230924131745.1275960-19-sashal@kernel.org>
Date:   Sun, 24 Sep 2023 09:17:36 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Julia Lawall <Julia.Lawall@...ia.fr>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Sasha Levin <sashal@...nel.org>, rafael@...nel.org,
        daniel.lezcano@...aro.org, linux-pm@...r.kernel.org
Subject: [PATCH AUTOSEL 6.1 19/28] thermal/of: add missing of_node_put()

From: Julia Lawall <Julia.Lawall@...ia.fr>

[ Upstream commit 8a81cf96f5510aaf9a65d103f7405079a7b0fcc5 ]

for_each_child_of_node performs an of_node_get on each
iteration, so a break out of the loop requires an
of_node_put.

This was done using the Coccinelle semantic patch
iterators/for_each_child.cocci

Signed-off-by: Julia Lawall <Julia.Lawall@...ia.fr>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/thermal/thermal_of.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 762d1990180bf..4104743dbc17e 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -149,8 +149,10 @@ static int of_find_trip_id(struct device_node *np, struct device_node *trip)
 	 */
 	for_each_child_of_node(trips, t) {
 
-		if (t == trip)
+		if (t == trip) {
+			of_node_put(t);
 			goto out;
+		}
 		i++;
 	}
 
@@ -519,8 +521,10 @@ static int thermal_of_for_each_cooling_maps(struct thermal_zone_device *tz,
 
 	for_each_child_of_node(cm_np, child) {
 		ret = thermal_of_for_each_cooling_device(tz_np, child, tz, cdev, action);
-		if (ret)
+		if (ret) {
+			of_node_put(child);
 			break;
+		}
 	}
 
 	of_node_put(cm_np);
-- 
2.40.1