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Commit 5230551a authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (max1668) Convert to use devm_hwmon_device_register_with_groups 



Simplify code, reduce code size, and attach hwmon attributes to hwmon device.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarJean Delvare <jdelvare@suse.de>
parent c5a70669

drivers/hwmon/max1668.c

+18 −49
Original line number Diff line number Diff line
@@ -66,7 +66,8 @@ MODULE_PARM_DESC(read_only, "Don't set any values, read only mode"); 
enum chips { max1668, max1805, max1989 };



struct max1668_data {

	struct device *hwmon_dev;

	struct i2c_client *client;

	const struct attribute_group *groups[3];

	enum chips type;



	struct mutex update_lock;
@@ -82,8 +83,8 @@ struct max1668_data { 


static struct max1668_data *max1668_update_device(struct device *dev)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct max1668_data *data = i2c_get_clientdata(client);

	struct max1668_data *data = dev_get_drvdata(dev);

	struct i2c_client *client = data->client;

	struct max1668_data *ret = data;

	s32 val;

	int i;
@@ -205,8 +206,8 @@ static ssize_t set_temp_max(struct device *dev, 
			    const char *buf, size_t count)

{

	int index = to_sensor_dev_attr(devattr)->index;

	struct i2c_client *client = to_i2c_client(dev);

	struct max1668_data *data = i2c_get_clientdata(client);

	struct max1668_data *data = dev_get_drvdata(dev);

	struct i2c_client *client = data->client;

	long temp;

	int ret;
@@ -231,8 +232,8 @@ static ssize_t set_temp_min(struct device *dev, 
			    const char *buf, size_t count)

{

	int index = to_sensor_dev_attr(devattr)->index;

	struct i2c_client *client = to_i2c_client(dev);

	struct max1668_data *data = i2c_get_clientdata(client);

	struct max1668_data *data = dev_get_drvdata(dev);

	struct i2c_client *client = data->client;

	long temp;

	int ret;
@@ -407,60 +408,29 @@ static int max1668_probe(struct i2c_client *client, 
			 const struct i2c_device_id *id)

{

	struct i2c_adapter *adapter = client->adapter;

	struct device *dev = &client->dev;

	struct device *hwmon_dev;

	struct max1668_data *data;

	int err;



	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))

		return -ENODEV;



	data = devm_kzalloc(&client->dev, sizeof(struct max1668_data),

			    GFP_KERNEL);

	data = devm_kzalloc(dev, sizeof(struct max1668_data), GFP_KERNEL);

	if (!data)

		return -ENOMEM;



	i2c_set_clientdata(client, data);

	data->client = client;

	data->type = id->driver_data;

	mutex_init(&data->update_lock);



	/* Register sysfs hooks */

	err = sysfs_create_group(&client->dev.kobj, &max1668_group_common);

	if (err)

		return err;



	if (data->type == max1668 || data->type == max1989) {

		err = sysfs_create_group(&client->dev.kobj,

					 &max1668_group_unique);

		if (err)

			goto error_sysrem0;

	}



	data->hwmon_dev = hwmon_device_register(&client->dev);

	if (IS_ERR(data->hwmon_dev)) {

		err = PTR_ERR(data->hwmon_dev);

		goto error_sysrem1;

	}



	return 0;



error_sysrem1:

	if (data->type == max1668 || data->type == max1989)

		sysfs_remove_group(&client->dev.kobj, &max1668_group_unique);

error_sysrem0:

	sysfs_remove_group(&client->dev.kobj, &max1668_group_common);

	return err;

}



static int max1668_remove(struct i2c_client *client)

{

	struct max1668_data *data = i2c_get_clientdata(client);



	hwmon_device_unregister(data->hwmon_dev);

	/* sysfs hooks */

	data->groups[0] = &max1668_group_common;

	if (data->type == max1668 || data->type == max1989)

		sysfs_remove_group(&client->dev.kobj, &max1668_group_unique);

		data->groups[1] = &max1668_group_unique;



	sysfs_remove_group(&client->dev.kobj, &max1668_group_common);



	return 0;

	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,

							   data, data->groups);

	return PTR_ERR_OR_ZERO(hwmon_dev);

}



static const struct i2c_device_id max1668_id[] = {
@@ -478,7 +448,6 @@ static struct i2c_driver max1668_driver = { 
		  .name	= "max1668",

		  },

	.probe = max1668_probe,

	.remove	= max1668_remove,

	.id_table = max1668_id,

	.detect	= max1668_detect,

	.address_list = max1668_addr_list,