pc87360: Delete sysfs files on device deletion

pc87360: Delete sysfs files on device deletion

Add 4 explicit attribute groups for the 5 sensor types:
voltage (in), therm, temp, and fan & pwm (together in one group).
Use sysfs_remove_group() to drop them, but keeps the existing
startup code, which calls device_create_file in loops.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/hwmon/pc87360.c

@@ -328,6 +328,12 @@ static struct sensor_device_attribute fan_min[] = {
 	SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
 };
 
+#define FAN_UNIT_ATTRS(X)	\
+	&fan_input[X].dev_attr.attr,	\
+	&fan_status[X].dev_attr.attr,	\
+	&fan_div[X].dev_attr.attr,	\
+	&fan_min[X].dev_attr.attr
+
 static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, char *buf)
 {
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
@@ -360,6 +366,19 @@ static struct sensor_device_attribute pwm[] = {
 	SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
 };
 
+static struct attribute * pc8736x_fan_attr_array[] = {
+	FAN_UNIT_ATTRS(0),
+	FAN_UNIT_ATTRS(1),
+	FAN_UNIT_ATTRS(2),
+	&pwm[0].dev_attr.attr,
+	&pwm[1].dev_attr.attr,
+	&pwm[2].dev_attr.attr,
+	NULL
+};
+static const struct attribute_group pc8736x_fan_group = {
+	.attrs = pc8736x_fan_attr_array,
+};
+
 static ssize_t show_in_input(struct device *dev, struct device_attribute *devattr, char *buf)
 {
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
@@ -472,6 +491,12 @@ static struct sensor_device_attribute in_max[] = {
 	SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
 };
 
+#define VIN_UNIT_ATTRS(X) \
+	&in_input[X].dev_attr.attr,	\
+	&in_status[X].dev_attr.attr,	\
+	&in_min[X].dev_attr.attr,	\
+	&in_max[X].dev_attr.attr
+
 static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct pc87360_data *data = pc87360_update_device(dev);
@@ -500,6 +525,27 @@ static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr,
 }
 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
 
+static struct attribute *pc8736x_vin_attr_array[] = {
+	VIN_UNIT_ATTRS(0),
+	VIN_UNIT_ATTRS(1),
+	VIN_UNIT_ATTRS(2),
+	VIN_UNIT_ATTRS(3),
+	VIN_UNIT_ATTRS(4),
+	VIN_UNIT_ATTRS(5),
+	VIN_UNIT_ATTRS(6),
+	VIN_UNIT_ATTRS(7),
+	VIN_UNIT_ATTRS(8),
+	VIN_UNIT_ATTRS(9),
+	VIN_UNIT_ATTRS(10),
+	&dev_attr_cpu0_vid.attr,
+	&dev_attr_vrm.attr,
+	&dev_attr_alarms_in.attr,
+	NULL
+};
+static const struct attribute_group pc8736x_vin_group = {
+	.attrs = pc8736x_vin_attr_array,
+};
+
 static ssize_t show_therm_input(struct device *dev, struct device_attribute *devattr, char *buf)
 {
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
@@ -618,6 +664,23 @@ static struct sensor_device_attribute therm_crit[] = {
 		    show_therm_crit, set_therm_crit, 2+11),
 };
 
+#define THERM_UNIT_ATTRS(X) \
+	&therm_input[X].dev_attr.attr,	\
+	&therm_status[X].dev_attr.attr,	\
+	&therm_min[X].dev_attr.attr,	\
+	&therm_max[X].dev_attr.attr,	\
+	&therm_crit[X].dev_attr.attr
+
+static struct attribute * pc8736x_therm_attr_array[] = {
+	THERM_UNIT_ATTRS(0),
+	THERM_UNIT_ATTRS(1),
+	THERM_UNIT_ATTRS(2),
+	NULL
+};
+static const struct attribute_group pc8736x_therm_group = {
+	.attrs = pc8736x_therm_attr_array,
+};
+
 static ssize_t show_temp_input(struct device *dev, struct device_attribute *devattr, char *buf)
 {
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
@@ -736,6 +799,25 @@ static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *att
 }
 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
 
+#define TEMP_UNIT_ATTRS(X) \
+	&temp_input[X].dev_attr.attr,	\
+	&temp_status[X].dev_attr.attr,	\
+	&temp_min[X].dev_attr.attr,	\
+	&temp_max[X].dev_attr.attr,	\
+	&temp_crit[X].dev_attr.attr
+
+static struct attribute * pc8736x_temp_attr_array[] = {
+	TEMP_UNIT_ATTRS(0),
+	TEMP_UNIT_ATTRS(1),
+	TEMP_UNIT_ATTRS(2),
+	/* include the few miscellaneous atts here */
+	&dev_attr_alarms_temp.attr,
+	NULL
+};
+static const struct attribute_group pc8736x_temp_group = {
+	.attrs = pc8736x_temp_attr_array,
+};
+
 /*
  * Device detection, registration and update
  */
@@ -1009,6 +1091,11 @@ static int pc87360_detach_client(struct i2c_client *client)
 
 	hwmon_device_unregister(data->class_dev);
 
+	sysfs_remove_group(&client->dev.kobj, &pc8736x_temp_group);
+	sysfs_remove_group(&client->dev.kobj, &pc8736x_fan_group);
+	sysfs_remove_group(&client->dev.kobj, &pc8736x_therm_group);
+	sysfs_remove_group(&client->dev.kobj, &pc8736x_vin_group);
+
 	if ((i = i2c_detach_client(client)))
 		return i;