hwmon: (tmp401) use permission-specific DEVICE_ATTR variants

Use DEVICE_ATTR_RW for read/write attributes. This simplifies the source
code, improves readbility, and reduces the chance of inconsistencies.

The conversion was done automatically using coccinelle. It was validated
by compiling both the old and the new source code and comparing its text,
data, and bss size.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
[groeck: Updated description]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/tmp401.c

@@ -449,7 +449,7 @@ static ssize_t reset_temp_history(struct device *dev,
 	return count;
 }
 
-static ssize_t show_update_interval(struct device *dev,
+static ssize_t update_interval_show(struct device *dev,
 				    struct device_attribute *attr, char *buf)
 {
 	struct tmp401_data *data = dev_get_drvdata(dev);
@@ -457,9 +457,9 @@ static ssize_t show_update_interval(struct device *dev,
 	return sprintf(buf, "%u\n", data->update_interval);
 }
 
-static ssize_t set_update_interval(struct device *dev,
-				   struct device_attribute *attr,
-				   const char *buf, size_t count)
+static ssize_t update_interval_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
 {
 	struct tmp401_data *data = dev_get_drvdata(dev);
 	struct i2c_client *client = data->client;
@@ -521,8 +521,7 @@ static SENSOR_DEVICE_ATTR_2(temp2_max_alarm, S_IRUGO, show_status, NULL,
 static SENSOR_DEVICE_ATTR_2(temp2_crit_alarm, S_IRUGO, show_status, NULL,
 			    3, TMP432_STATUS_REMOTE1);
 
-static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval,
-		   set_update_interval);
+static DEVICE_ATTR_RW(update_interval);
 
 static struct attribute *tmp401_attributes[] = {
 	&sensor_dev_attr_temp1_input.dev_attr.attr,