hwmon: (it87) use permission-specific DEVICE_ATTR variants

Use DEVICE_ATTR_RO for read only attributes and 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/it87.c

@@ -1762,14 +1762,14 @@ static SENSOR_DEVICE_ATTR(pwm6_auto_slope, S_IRUGO | S_IWUSR,
 			  show_auto_pwm_slope, set_auto_pwm_slope, 5);
 
 /* Alarms */
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
+static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
 	struct it87_data *data = it87_update_device(dev);
 
 	return sprintf(buf, "%u\n", data->alarms);
 }
-static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+static DEVICE_ATTR_RO(alarms);
 
 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
 			  char *buf)
@@ -1877,16 +1877,16 @@ static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
 
-static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
-			    char *buf)
+static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
+			char *buf)
 {
 	struct it87_data *data = dev_get_drvdata(dev);
 
 	return sprintf(buf, "%u\n", data->vrm);
 }
 
-static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
-			     const char *buf, size_t count)
+static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
+			 const char *buf, size_t count)
 {
 	struct it87_data *data = dev_get_drvdata(dev);
 	unsigned long val;
@@ -1898,16 +1898,16 @@ static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
 
 	return count;
 }
-static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
+static DEVICE_ATTR_RW(vrm);
 
-static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
-			    char *buf)
+static ssize_t cpu0_vid_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
 {
 	struct it87_data *data = it87_update_device(dev);
 
 	return sprintf(buf, "%ld\n", (long)vid_from_reg(data->vid, data->vrm));
 }
-static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
+static DEVICE_ATTR_RO(cpu0_vid);
 
 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
 			  char *buf)