diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2014-04-05 21:22:46 -0700 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2014-05-21 16:02:20 -0700 |
| commit | 276dac8039a70630e4dbf5c4c3b294c057e8cd42 (patch) | |
| tree | 007c079f407d0871111490a0aa012f45dba758f6 /drivers/hwmon/tmp421.c | |
| parent | ad9beea43f22f80217ac1850b0373718adce5fbc (diff) | |
hwmon: (tmp421) Convert to use devm_hwmon_device_register_with_groups
Use devm_hwmon_device_register_with_groups API to attach attributes
to hwmon device, simplify code, and reduce code size.
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/tmp421.c')
| -rw-r--r-- | drivers/hwmon/tmp421.c | 47 |
1 files changed, 15 insertions, 32 deletions
diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c index ae26b06fa819..7bab7a9bedc6 100644 --- a/drivers/hwmon/tmp421.c +++ b/drivers/hwmon/tmp421.c @@ -69,7 +69,7 @@ static const struct i2c_device_id tmp421_id[] = { MODULE_DEVICE_TABLE(i2c, tmp421_id); struct tmp421_data { - struct device *hwmon_dev; + struct i2c_client *client; struct mutex update_lock; char valid; unsigned long last_updated; @@ -99,8 +99,8 @@ static int temp_from_u16(u16 reg) static struct tmp421_data *tmp421_update_device(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct tmp421_data *data = i2c_get_clientdata(client); + struct tmp421_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; int i; mutex_lock(&data->update_lock); @@ -198,6 +198,11 @@ static const struct attribute_group tmp421_group = { .is_visible = tmp421_is_visible, }; +static const struct attribute_group *tmp421_groups[] = { + &tmp421_group, + NULL +}; + static int tmp421_init_client(struct i2c_client *client) { int config, config_orig; @@ -264,47 +269,26 @@ static int tmp421_detect(struct i2c_client *client, static int tmp421_probe(struct i2c_client *client, const struct i2c_device_id *id) { + struct device *dev = &client->dev; + struct device *hwmon_dev; struct tmp421_data *data; int err; - data = devm_kzalloc(&client->dev, sizeof(struct tmp421_data), - GFP_KERNEL); + data = devm_kzalloc(dev, sizeof(struct tmp421_data), GFP_KERNEL); if (!data) return -ENOMEM; - i2c_set_clientdata(client, data); mutex_init(&data->update_lock); data->channels = id->driver_data; + data->client = client; err = tmp421_init_client(client); if (err) return err; - err = sysfs_create_group(&client->dev.kobj, &tmp421_group); - if (err) - return err; - - data->hwmon_dev = hwmon_device_register(&client->dev); - if (IS_ERR(data->hwmon_dev)) { - err = PTR_ERR(data->hwmon_dev); - data->hwmon_dev = NULL; - goto exit_remove; - } - return 0; - -exit_remove: - sysfs_remove_group(&client->dev.kobj, &tmp421_group); - return err; -} - -static int tmp421_remove(struct i2c_client *client) -{ - struct tmp421_data *data = i2c_get_clientdata(client); - - hwmon_device_unregister(data->hwmon_dev); - sysfs_remove_group(&client->dev.kobj, &tmp421_group); - - return 0; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, tmp421_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); } static struct i2c_driver tmp421_driver = { @@ -313,7 +297,6 @@ static struct i2c_driver tmp421_driver = { .name = "tmp421", }, .probe = tmp421_probe, - .remove = tmp421_remove, .id_table = tmp421_id, .detect = tmp421_detect, .address_list = normal_i2c, |