--- zzzz-none-000/linux-3.10.107/drivers/hwmon/gl520sm.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/hwmon/gl520sm.c	2021-02-04 17:41:59.000000000 +0000
@@ -73,41 +73,10 @@
 #define GL520_REG_BEEP_MASK		0x10
 #define GL520_REG_BEEP_ENABLE		GL520_REG_CONF
 
-/*
- * Function declarations
- */
-
-static int gl520_probe(struct i2c_client *client,
-		       const struct i2c_device_id *id);
-static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info);
-static void gl520_init_client(struct i2c_client *client);
-static int gl520_remove(struct i2c_client *client);
-static int gl520_read_value(struct i2c_client *client, u8 reg);
-static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value);
-static struct gl520_data *gl520_update_device(struct device *dev);
-
-/* Driver data */
-static const struct i2c_device_id gl520_id[] = {
-	{ "gl520sm", 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, gl520_id);
-
-static struct i2c_driver gl520_driver = {
-	.class		= I2C_CLASS_HWMON,
-	.driver = {
-		.name	= "gl520sm",
-	},
-	.probe		= gl520_probe,
-	.remove		= gl520_remove,
-	.id_table	= gl520_id,
-	.detect		= gl520_detect,
-	.address_list	= normal_i2c,
-};
-
 /* Client data */
 struct gl520_data {
-	struct device *hwmon_dev;
+	struct i2c_client *client;
+	const struct attribute_group *groups[3];
 	struct mutex update_lock;
 	char valid;		/* zero until the following fields are valid */
 	unsigned long last_updated;	/* in jiffies */
@@ -132,6 +101,102 @@
 };
 
 /*
+ * Registers 0x07 to 0x0c are word-sized, others are byte-sized
+ * GL520 uses a high-byte first convention
+ */
+static int gl520_read_value(struct i2c_client *client, u8 reg)
+{
+	if ((reg >= 0x07) && (reg <= 0x0c))
+		return i2c_smbus_read_word_swapped(client, reg);
+	else
+		return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
+{
+	if ((reg >= 0x07) && (reg <= 0x0c))
+		return i2c_smbus_write_word_swapped(client, reg, value);
+	else
+		return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static struct gl520_data *gl520_update_device(struct device *dev)
+{
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	int val, i;
+
+	mutex_lock(&data->update_lock);
+
+	if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
+
+		dev_dbg(&client->dev, "Starting gl520sm update\n");
+
+		data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
+		data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
+		data->vid = gl520_read_value(client,
+					     GL520_REG_VID_INPUT) & 0x1f;
+
+		for (i = 0; i < 4; i++) {
+			data->in_input[i] = gl520_read_value(client,
+							GL520_REG_IN_INPUT[i]);
+			val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
+			data->in_min[i] = val & 0xff;
+			data->in_max[i] = (val >> 8) & 0xff;
+		}
+
+		val = gl520_read_value(client, GL520_REG_FAN_INPUT);
+		data->fan_input[0] = (val >> 8) & 0xff;
+		data->fan_input[1] = val & 0xff;
+
+		val = gl520_read_value(client, GL520_REG_FAN_MIN);
+		data->fan_min[0] = (val >> 8) & 0xff;
+		data->fan_min[1] = val & 0xff;
+
+		data->temp_input[0] = gl520_read_value(client,
+						GL520_REG_TEMP_INPUT[0]);
+		data->temp_max[0] = gl520_read_value(client,
+						GL520_REG_TEMP_MAX[0]);
+		data->temp_max_hyst[0] = gl520_read_value(client,
+						GL520_REG_TEMP_MAX_HYST[0]);
+
+		val = gl520_read_value(client, GL520_REG_FAN_DIV);
+		data->fan_div[0] = (val >> 6) & 0x03;
+		data->fan_div[1] = (val >> 4) & 0x03;
+		data->fan_off = (val >> 2) & 0x01;
+
+		data->alarms &= data->alarm_mask;
+
+		val = gl520_read_value(client, GL520_REG_CONF);
+		data->beep_enable = !((val >> 2) & 1);
+
+		/* Temp1 and Vin4 are the same input */
+		if (data->two_temps) {
+			data->temp_input[1] = gl520_read_value(client,
+						GL520_REG_TEMP_INPUT[1]);
+			data->temp_max[1] = gl520_read_value(client,
+						GL520_REG_TEMP_MAX[1]);
+			data->temp_max_hyst[1] = gl520_read_value(client,
+						GL520_REG_TEMP_MAX_HYST[1]);
+		} else {
+			data->in_input[4] = gl520_read_value(client,
+						GL520_REG_IN_INPUT[4]);
+			data->in_min[4] = gl520_read_value(client,
+						GL520_REG_IN_MIN[4]);
+			data->in_max[4] = gl520_read_value(client,
+						GL520_REG_IN_MAX[4]);
+		}
+
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+
+	mutex_unlock(&data->update_lock);
+
+	return data;
+}
+
+/*
  * Sysfs stuff
  */
 
@@ -191,8 +256,8 @@
 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
 			  const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	int n = to_sensor_dev_attr(attr)->index;
 	u8 r;
 	long v;
@@ -225,8 +290,8 @@
 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
 			  const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	int n = to_sensor_dev_attr(attr)->index;
 	u8 r;
 	long v;
@@ -326,8 +391,8 @@
 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 			   const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	int n = to_sensor_dev_attr(attr)->index;
 	u8 r;
 	unsigned long v;
@@ -365,8 +430,8 @@
 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 			   const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	int n = to_sensor_dev_attr(attr)->index;
 	u8 r;
 	unsigned long v;
@@ -414,8 +479,8 @@
 static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
 			   const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	u8 r;
 	unsigned long v;
 	int err;
@@ -482,8 +547,8 @@
 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
 			    const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	int n = to_sensor_dev_attr(attr)->index;
 	long v;
 	int err;
@@ -502,8 +567,8 @@
 static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
 				 *attr, const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	int n = to_sensor_dev_attr(attr)->index;
 	long v;
 	int err;
@@ -555,8 +620,8 @@
 static ssize_t set_beep_enable(struct device *dev, struct device_attribute
 			       *attr, const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	u8 r;
 	unsigned long v;
 	int err;
@@ -579,8 +644,8 @@
 static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
 			     const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	unsigned long r;
 	int err;
 
@@ -633,8 +698,8 @@
 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
 			const char *buf, size_t count)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct gl520_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
 	int bitnr = to_sensor_dev_attr(attr)->index;
 	unsigned long bit;
 
@@ -772,52 +837,6 @@
 	return 0;
 }
 
-static int gl520_probe(struct i2c_client *client,
-		       const struct i2c_device_id *id)
-{
-	struct gl520_data *data;
-	int err;
-
-	data = devm_kzalloc(&client->dev, sizeof(struct gl520_data),
-			    GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	i2c_set_clientdata(client, data);
-	mutex_init(&data->update_lock);
-
-	/* Initialize the GL520SM chip */
-	gl520_init_client(client);
-
-	/* Register sysfs hooks */
-	err = sysfs_create_group(&client->dev.kobj, &gl520_group);
-	if (err)
-		return err;
-
-	if (data->two_temps)
-		err = sysfs_create_group(&client->dev.kobj, &gl520_group_temp2);
-	else
-		err = sysfs_create_group(&client->dev.kobj, &gl520_group_in4);
-
-	if (err)
-		goto exit_remove_files;
-
-	data->hwmon_dev = hwmon_device_register(&client->dev);
-	if (IS_ERR(data->hwmon_dev)) {
-		err = PTR_ERR(data->hwmon_dev);
-		goto exit_remove_files;
-	}
-
-	return 0;
-
-exit_remove_files:
-	sysfs_remove_group(&client->dev.kobj, &gl520_group);
-	sysfs_remove_group(&client->dev.kobj, &gl520_group_in4);
-	sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2);
-	return err;
-}
-
-
 /* Called when we have found a new GL520SM. */
 static void gl520_init_client(struct i2c_client *client)
 {
@@ -856,115 +875,53 @@
 	gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask);
 }
 
-static int gl520_remove(struct i2c_client *client)
+static int gl520_probe(struct i2c_client *client,
+		       const struct i2c_device_id *id)
 {
-	struct gl520_data *data = i2c_get_clientdata(client);
+	struct device *dev = &client->dev;
+	struct device *hwmon_dev;
+	struct gl520_data *data;
 
-	hwmon_device_unregister(data->hwmon_dev);
-	sysfs_remove_group(&client->dev.kobj, &gl520_group);
-	sysfs_remove_group(&client->dev.kobj, &gl520_group_in4);
-	sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2);
+	data = devm_kzalloc(dev, sizeof(struct gl520_data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
 
-	return 0;
-}
+	i2c_set_clientdata(client, data);
+	mutex_init(&data->update_lock);
+	data->client = client;
 
+	/* Initialize the GL520SM chip */
+	gl520_init_client(client);
 
-/*
- * Registers 0x07 to 0x0c are word-sized, others are byte-sized
- * GL520 uses a high-byte first convention
- */
-static int gl520_read_value(struct i2c_client *client, u8 reg)
-{
-	if ((reg >= 0x07) && (reg <= 0x0c))
-		return i2c_smbus_read_word_swapped(client, reg);
-	else
-		return i2c_smbus_read_byte_data(client, reg);
-}
+	/* sysfs hooks */
+	data->groups[0] = &gl520_group;
 
-static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
-{
-	if ((reg >= 0x07) && (reg <= 0x0c))
-		return i2c_smbus_write_word_swapped(client, reg, value);
+	if (data->two_temps)
+		data->groups[1] = &gl520_group_temp2;
 	else
-		return i2c_smbus_write_byte_data(client, reg, value);
-}
-
-
-static struct gl520_data *gl520_update_device(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct gl520_data *data = i2c_get_clientdata(client);
-	int val, i;
-
-	mutex_lock(&data->update_lock);
-
-	if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
-
-		dev_dbg(&client->dev, "Starting gl520sm update\n");
-
-		data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
-		data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
-		data->vid = gl520_read_value(client,
-					     GL520_REG_VID_INPUT) & 0x1f;
-
-		for (i = 0; i < 4; i++) {
-			data->in_input[i] = gl520_read_value(client,
-							GL520_REG_IN_INPUT[i]);
-			val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]);
-			data->in_min[i] = val & 0xff;
-			data->in_max[i] = (val >> 8) & 0xff;
-		}
-
-		val = gl520_read_value(client, GL520_REG_FAN_INPUT);
-		data->fan_input[0] = (val >> 8) & 0xff;
-		data->fan_input[1] = val & 0xff;
+		data->groups[1] = &gl520_group_in4;
 
-		val = gl520_read_value(client, GL520_REG_FAN_MIN);
-		data->fan_min[0] = (val >> 8) & 0xff;
-		data->fan_min[1] = val & 0xff;
-
-		data->temp_input[0] = gl520_read_value(client,
-						GL520_REG_TEMP_INPUT[0]);
-		data->temp_max[0] = gl520_read_value(client,
-						GL520_REG_TEMP_MAX[0]);
-		data->temp_max_hyst[0] = gl520_read_value(client,
-						GL520_REG_TEMP_MAX_HYST[0]);
-
-		val = gl520_read_value(client, GL520_REG_FAN_DIV);
-		data->fan_div[0] = (val >> 6) & 0x03;
-		data->fan_div[1] = (val >> 4) & 0x03;
-		data->fan_off = (val >> 2) & 0x01;
-
-		data->alarms &= data->alarm_mask;
-
-		val = gl520_read_value(client, GL520_REG_CONF);
-		data->beep_enable = !((val >> 2) & 1);
-
-		/* Temp1 and Vin4 are the same input */
-		if (data->two_temps) {
-			data->temp_input[1] = gl520_read_value(client,
-						GL520_REG_TEMP_INPUT[1]);
-			data->temp_max[1] = gl520_read_value(client,
-						GL520_REG_TEMP_MAX[1]);
-			data->temp_max_hyst[1] = gl520_read_value(client,
-						GL520_REG_TEMP_MAX_HYST[1]);
-		} else {
-			data->in_input[4] = gl520_read_value(client,
-						GL520_REG_IN_INPUT[4]);
-			data->in_min[4] = gl520_read_value(client,
-						GL520_REG_IN_MIN[4]);
-			data->in_max[4] = gl520_read_value(client,
-						GL520_REG_IN_MAX[4]);
-		}
-
-		data->last_updated = jiffies;
-		data->valid = 1;
-	}
+	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+							   data, data->groups);
+	return PTR_ERR_OR_ZERO(hwmon_dev);
+}
 
-	mutex_unlock(&data->update_lock);
+static const struct i2c_device_id gl520_id[] = {
+	{ "gl520sm", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, gl520_id);
 
-	return data;
-}
+static struct i2c_driver gl520_driver = {
+	.class		= I2C_CLASS_HWMON,
+	.driver = {
+		.name	= "gl520sm",
+	},
+	.probe		= gl520_probe,
+	.id_table	= gl520_id,
+	.detect		= gl520_detect,
+	.address_list	= normal_i2c,
+};
 
 module_i2c_driver(gl520_driver);