linux-kernel - [PATCH] thermal: imx_sc_thermal: Fix refcount leak in imx_sc_thermal

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Message-Id: <20220516073151.25918-1-linmq006@gmail.com>
Date:   Mon, 16 May 2022 11:31:50 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Anson Huang <Anson.Huang@....com>, linux-pm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] thermal: imx_sc_thermal: Fix refcount leak in imx_sc_thermal_probe

of_find_node_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

Fixes: e20db70dba1c ("thermal: imx_sc: add i.MX system controller thermal support")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/thermal/imx_sc_thermal.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/thermal/imx_sc_thermal.c b/drivers/thermal/imx_sc_thermal.c
index 8d76dbfde6a9..1ab854c228e5 100644
--- a/drivers/thermal/imx_sc_thermal.c
+++ b/drivers/thermal/imx_sc_thermal.c
@@ -95,6 +95,7 @@ static int imx_sc_thermal_probe(struct platform_device *pdev)
 		if (!sensor) {
 			of_node_put(child);
 			of_node_put(sensor_np);
+			of_node_put(np);
 			return -ENOMEM;
 		}
 
@@ -125,6 +126,7 @@ static int imx_sc_thermal_probe(struct platform_device *pdev)
 	}
 
 	of_node_put(sensor_np);
+	of_node_put(np);
 
 	return ret;
 }
-- 
2.25.1