linux-kernel - [PATCH v2 1/2] hwmon: g762: add a check of devm_add_action in g762_of_clock

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Date:   Mon, 27 Feb 2023 11:09:12 +0800
From:   void0red <void0red@...il.com>
To:     linux@...ck-us.net
Cc:     jdelvare@...e.com, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org, mezin.alexander@...il.com,
        void0red@...il.com
Subject: [PATCH v2 1/2] hwmon: g762: add a check of devm_add_action in g762_of_clock_enable

From: Kang Chen <void0red@...il.com>

devm_add_action may fails, check it and do the cleanup.

Signed-off-by: Kang Chen <void0red@...il.com>
---
v2 -> v1: split the patch

 drivers/hwmon/g762.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/g762.c b/drivers/hwmon/g762.c
index 64a0599b2..e2c3c34f0 100644
--- a/drivers/hwmon/g762.c
+++ b/drivers/hwmon/g762.c
@@ -620,7 +620,12 @@ static int g762_of_clock_enable(struct i2c_client *client)
 	data = i2c_get_clientdata(client);
 	data->clk = clk;
 
-	devm_add_action(&client->dev, g762_of_clock_disable, data);
+	ret = devm_add_action(&client->dev, g762_of_clock_disable, data);
+	if (ret) {
+		dev_err(&client->dev, "failed to add disable clock action\n");
+		goto clk_unprep;
+	}
+
 	return 0;
 
  clk_unprep:
-- 
2.34.1