linux-kernel - [v1,1/1 1/2] Check the timeout module parameter is in the min-max range

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Message-ID: <1590542319-35736-1-git-send-email-yuechao.zhao@advantech.com.cn>
Date:   Wed, 27 May 2020 01:18:38 +0000
From:   <yuechao.zhao@...antech.com.cn>
To:     <345351830@...com>
CC:     <amy.shih@...antech.com.tw>, <oakley.ding@...antech.com.tw>,
        <jia.sui@...antech.com.cn>,
        Yuechao Zhao <yuechao.zhao@...antech.com.cn>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        <linux-hwmon@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [v1,1/1 1/2] Check the timeout module parameter is in the min-max range

From: Yuechao Zhao <yuechao.zhao@...antech.com.cn>

Check the return value of 'watchdog_init_timeout()' for checking the
timeout module parameter is in the min-max range.

Signed-off-by: Yuechao Zhao <yuechao.zhao@...antech.com.cn>
---
 drivers/hwmon/nct7904.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
index 18c95be..d069d59 100644
--- a/drivers/hwmon/nct7904.c
+++ b/drivers/hwmon/nct7904.c
@@ -1152,7 +1152,10 @@ static int nct7904_probe(struct i2c_client *client,
 	data->wdt.max_timeout = MAX_TIMEOUT;
 	data->wdt.parent = &client->dev;
 
-	watchdog_init_timeout(&data->wdt, timeout * 60, &client->dev);
+	ret = watchdog_init_timeout(&data->wdt, timeout * 60, &client->dev);
+	if (ret < 0)
+		return ret;
+
 	watchdog_set_nowayout(&data->wdt, nowayout);
 	watchdog_set_drvdata(&data->wdt, data);
 
-- 
1.8.3.1