[RFC PATCH 3/8] hwmon: (ltc4215) Convert to devm_hwmon_device_register API

[Guenter Roeck]

Signed-off-by: Guenter Roeck <li...@roeck-us.net>
---
 drivers/hwmon/ltc4215.c |   32 +++++++++++---------------------
 1 file changed, 11 insertions(+), 21 deletions(-)

diff --git a/drivers/hwmon/ltc4215.c b/drivers/hwmon/ltc4215.c
index e887610..83bc0ba 100644
--- a/drivers/hwmon/ltc4215.c
+++ b/drivers/hwmon/ltc4215.c
@@ -45,7 +45,7 @@ struct ltc4215_data {
 
 static struct ltc4215_data *ltc4215_update_device(struct device *dev)
 {
-       struct i2c_client *client = to_i2c_client(dev);
+       struct i2c_client *client = to_i2c_client(dev->parent);
        struct ltc4215_data *data = i2c_get_clientdata(client);
        s32 val;
        int i;
@@ -244,12 +244,16 @@ static const struct attribute_group ltc4215_group = {
        .attrs = ltc4215_attributes,
 };
 
+static const struct attribute_group *ltc4215_groups[] = {
+       &ltc4215_group,
+       NULL
+};
+
 static int ltc4215_probe(struct i2c_client *client,
                         const struct i2c_device_id *id)
 {
        struct i2c_adapter *adapter = client->adapter;
        struct ltc4215_data *data;
-       int ret;
 
        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                return -ENODEV;
@@ -264,31 +268,17 @@ static int ltc4215_probe(struct i2c_client *client,
        /* Initialize the LTC4215 chip */
        i2c_smbus_write_byte_data(client, LTC4215_FAULT, 0x00);
 
-       /* Register sysfs hooks */
-       ret = sysfs_create_group(&client->dev.kobj, &ltc4215_group);
-       if (ret)
-               return ret;
-
-       data->hwmon_dev = hwmon_device_register(&client->dev);
-       if (IS_ERR(data->hwmon_dev)) {
-               ret = PTR_ERR(data->hwmon_dev);
-               goto out_hwmon_device_register;
-       }
+       data->hwmon_dev = devm_hwmon_device_register(&client->dev,
+                                                    ltc4215_groups,
+                                                    id->name);
+       if (IS_ERR(data->hwmon_dev))
+               return PTR_ERR(data->hwmon_dev);
 
        return 0;
-
-out_hwmon_device_register:
-       sysfs_remove_group(&client->dev.kobj, &ltc4215_group);
-       return ret;
 }
 
 static int ltc4215_remove(struct i2c_client *client)
 {
-       struct ltc4215_data *data = i2c_get_clientdata(client);
-
-       hwmon_device_unregister(data->hwmon_dev);
-       sysfs_remove_group(&client->dev.kobj, &ltc4215_group);
-
        return 0;
 }
 
-- 
1.7.9.7

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