diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index d368d8f..1311a59 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -137,6 +137,8 @@
 #define FAN_PERIOD_INVALID	65535
 #define FAN_DATA_VALID(x)	((x) && (x) != FAN_PERIOD_INVALID)
 
+#define ROUND_DIV(x, divisor)	(((x) + ((divisor) / 2)) / (divisor))
+
 struct adt7470_data {
 	struct device		*hwmon_dev;
 	struct attribute_group	attrs;
@@ -353,7 +355,13 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10) / 1000;
+	long temp;
+
+	if (strict_strtol(buf, 10, &temp))
+		return -EINVAL;
+
+	temp = ROUND_DIV(temp, 1000);
+	temp = SENSORS_LIMIT(temp, 0, 255);
 
 	mutex_lock(&data->lock);
 	data->temp_min[attr->index] = temp;
@@ -381,7 +389,13 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10) / 1000;
+	long temp;
+
+	if (strict_strtol(buf, 10, &temp))
+		return -EINVAL;
+
+	temp = ROUND_DIV(temp, 1000);
+	temp = SENSORS_LIMIT(temp, 0, 255);
 
 	mutex_lock(&data->lock);
 	data->temp_max[attr->index] = temp;
@@ -430,11 +444,13 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10);
+	long temp;
 
-	if (!temp)
+	if (strict_strtol(buf, 10, &temp) || !temp)
 		return -EINVAL;
+
 	temp = FAN_RPM_TO_PERIOD(temp);
+	temp = SENSORS_LIMIT(temp, 1, 65534);
 
 	mutex_lock(&data->lock);
 	data->fan_max[attr->index] = temp;
@@ -465,11 +481,13 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10);
+	long temp;
 
-	if (!temp)
+	if (strict_strtol(buf, 10, &temp) || !temp)
 		return -EINVAL;
+
 	temp = FAN_RPM_TO_PERIOD(temp);
+	temp = SENSORS_LIMIT(temp, 1, 65534);
 
 	mutex_lock(&data->lock);
 	data->fan_min[attr->index] = temp;
@@ -507,9 +525,12 @@
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10);
+	long temp;
 	u8 reg;
 
+	if (strict_strtol(buf, 10, &temp))
+		return -EINVAL;
+
 	mutex_lock(&data->lock);
 	data->force_pwm_max = temp;
 	reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
@@ -537,7 +558,12 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10);
+	long temp;
+
+	if (strict_strtol(buf, 10, &temp))
+		return -EINVAL;
+
+	temp = SENSORS_LIMIT(temp, 0, 255);
 
 	mutex_lock(&data->lock);
 	data->pwm[attr->index] = temp;
@@ -564,7 +590,12 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10);
+	long temp;
+
+	if (strict_strtol(buf, 10, &temp))
+		return -EINVAL;
+
+	temp = SENSORS_LIMIT(temp, 0, 255);
 
 	mutex_lock(&data->lock);
 	data->pwm_max[attr->index] = temp;
@@ -592,7 +623,12 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10);
+	long temp;
+
+	if (strict_strtol(buf, 10, &temp))
+		return -EINVAL;
+
+	temp = SENSORS_LIMIT(temp, 0, 255);
 
 	mutex_lock(&data->lock);
 	data->pwm_min[attr->index] = temp;
@@ -630,7 +666,13 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10) / 1000;
+	long temp;
+
+	if (strict_strtol(buf, 10, &temp))
+		return -EINVAL;
+
+	temp = ROUND_DIV(temp, 1000);
+	temp = SENSORS_LIMIT(temp, 0, 255);
 
 	mutex_lock(&data->lock);
 	data->pwm_tmin[attr->index] = temp;
@@ -658,11 +700,14 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = simple_strtol(buf, NULL, 10);
 	int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index);
 	int pwm_auto_reg_mask;
+	long temp;
 	u8 reg;
 
+	if (strict_strtol(buf, 10, &temp))
+		return -EINVAL;
+
 	if (attr->index % 2)
 		pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK;
 	else
@@ -716,10 +761,14 @@
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7470_data *data = i2c_get_clientdata(client);
-	int temp = cvt_auto_temp(simple_strtol(buf, NULL, 10));
 	int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index);
+	long temp;
 	u8 reg;
 
+	if (strict_strtol(buf, 10, &temp))
+		return -EINVAL;
+
+	temp = cvt_auto_temp(temp);
 	if (temp < 0)
 		return temp;