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hwmon: (max1619) Convert to use devm_hwmon_device_register_with_groups

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Use devm_hwmon_device_register_with_groups API to attach attributes
to hwmon device, simplify code, and reduce code size.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2014-04-12 10:35:29 -07:00
parent f83111964e
commit 9f1513bd55
1 changed files with 14 additions and 39 deletions
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53
drivers/hwmon/max1619.c
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@ -86,7 +86,7 @@ enum temp_index {
*/
struct max1619_data {
struct device *hwmon_dev;
struct i2c_client *client;
struct mutex update_lock;
char valid; /* zero until following fields are valid */
unsigned long last_updated; /* in jiffies */
@ -114,8 +114,8 @@ static const u8 regs_write[t_num_regs] = {
static struct max1619_data *max1619_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct max1619_data *data = i2c_get_clientdata(client);
struct max1619_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int config, i;
mutex_lock(&data->update_lock);
@ -158,8 +158,8 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct max1619_data *data = i2c_get_clientdata(client);
struct max1619_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err = kstrtol(buf, 10, &val);
if (err)
@ -205,7 +205,7 @@ static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4);
static struct attribute *max1619_attributes[] = {
static struct attribute *max1619_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
@ -220,10 +220,7 @@ static struct attribute *max1619_attributes[] = {
&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
NULL
};
static const struct attribute_group max1619_group = {
.attrs = max1619_attributes,
};
ATTRIBUTE_GROUPS(max1619);
/* Return 0 if detection is successful, -ENODEV otherwise */
static int max1619_detect(struct i2c_client *client,
@ -280,45 +277,24 @@ static int max1619_probe(struct i2c_client *new_client,
const struct i2c_device_id *id)
{
struct max1619_data *data;
int err;
struct device *hwmon_dev;
data = devm_kzalloc(&new_client->dev, sizeof(struct max1619_data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(new_client, data);
data->client = new_client;
mutex_init(&data->update_lock);
/* Initialize the MAX1619 chip */
max1619_init_client(new_client);
/* Register sysfs hooks */
err = sysfs_create_group(&new_client->dev.kobj, &max1619_group);
if (err)
return err;
data->hwmon_dev = hwmon_device_register(&new_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(&new_client->dev.kobj, &max1619_group);
return err;
}
static int max1619_remove(struct i2c_client *client)
{
struct max1619_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &max1619_group);
return 0;
hwmon_dev = devm_hwmon_device_register_with_groups(&new_client->dev,
new_client->name,
data,
max1619_groups);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id max1619_id[] = {
@ -333,7 +309,6 @@ static struct i2c_driver max1619_driver = {
.name = "max1619",
},
.probe = max1619_probe,
.remove = max1619_remove,
.id_table = max1619_id,
.detect = max1619_detect,
.address_list = normal_i2c,