linux-kernel - [PATCH] hwmon: (nct7802) Add of_node

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Date:   Thu, 28 Oct 2021 22:49:18 -0400
From:   Wan Jiabing <wanjiabing@...o.com>
To:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     jiabing.wan@...com, Wan Jiabing <wanjiabing@...o.com>
Subject: [PATCH] hwmon: (nct7802) Add of_node_put() before return

Fix following coccicheck warning:
./drivers/hwmon/nct7802.c:1152:2-24: WARNING: Function
for_each_child_of_node should have of_node_put() before return.

Early exits from for_each_child_of_node should decrement the
node reference counter.

Signed-off-by: Wan Jiabing <wanjiabing@...o.com>
---
 drivers/hwmon/nct7802.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/nct7802.c b/drivers/hwmon/nct7802.c
index d56f78327619..d1eeef02b6dc 100644
--- a/drivers/hwmon/nct7802.c
+++ b/drivers/hwmon/nct7802.c
@@ -1152,8 +1152,10 @@ static int nct7802_configure_channels(struct device *dev,
 		for_each_child_of_node(dev->of_node, node) {
 			err = nct7802_get_channel_config(dev, node, &mode_mask,
 							 &mode_val);
-			if (err)
+			if (err) {
+				of_node_put(node);
 				return err;
+			}
 		}
 	}
 
-- 
2.20.1