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hwmon: (smsc47m192) Convert to devm_hwmon_device_register_with_groups

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Use devm_hwmon_device_register_with_groups() to simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Axel Lin 2014-07-17 19:21:44 +08:00 committed by Guenter Roeck
parent 94314e2593
commit 166f72966d
1 changed files with 25 additions and 52 deletions
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77
drivers/hwmon/smsc47m192.c
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@ -95,7 +95,8 @@ static inline int TEMP_FROM_REG(s8 val)
}
struct smsc47m192_data {
struct device *hwmon_dev;
struct i2c_client *client;
const struct attribute_group *groups[3];
struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
@ -114,8 +115,8 @@ struct smsc47m192_data {
static struct smsc47m192_data *smsc47m192_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct smsc47m192_data *data = i2c_get_clientdata(client);
struct smsc47m192_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int i, config;
mutex_lock(&data->update_lock);
@ -209,8 +210,8 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct smsc47m192_data *data = i2c_get_clientdata(client);
struct smsc47m192_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
unsigned long val;
int err;
@ -231,8 +232,8 @@ static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct smsc47m192_data *data = i2c_get_clientdata(client);
struct smsc47m192_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
unsigned long val;
int err;
@ -298,8 +299,8 @@ static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct smsc47m192_data *data = i2c_get_clientdata(client);
struct smsc47m192_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
@ -320,8 +321,8 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct smsc47m192_data *data = i2c_get_clientdata(client);
struct smsc47m192_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
@ -351,8 +352,8 @@ static ssize_t set_temp_offset(struct device *dev, struct device_attribute
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct smsc47m192_data *data = i2c_get_clientdata(client);
struct smsc47m192_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
long val;
int err;
@ -591,59 +592,32 @@ static int smsc47m192_detect(struct i2c_client *client,
static int smsc47m192_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device *hwmon_dev;
struct smsc47m192_data *data;
int config;
int err;
data = devm_kzalloc(&client->dev, sizeof(struct smsc47m192_data),
GFP_KERNEL);
data = devm_kzalloc(dev, sizeof(struct smsc47m192_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
data->client = client;
data->vrm = vid_which_vrm();
mutex_init(&data->update_lock);
/* Initialize the SMSC47M192 chip */
smsc47m192_init_client(client);
/* Register sysfs hooks */
err = sysfs_create_group(&client->dev.kobj, &smsc47m192_group);
if (err)
return err;
/* sysfs hooks */
data->groups[0] = &smsc47m192_group;
/* Pin 110 is either in4 (+12V) or VID4 */
config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG);
if (!(config & 0x20)) {
err = sysfs_create_group(&client->dev.kobj,
&smsc47m192_group_in4);
if (err)
goto exit_remove_files;
}
if (!(config & 0x20))
data->groups[1] = &smsc47m192_group_in4;
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, &smsc47m192_group);
sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4);
return err;
}
static int smsc47m192_remove(struct i2c_client *client)
{
struct smsc47m192_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &smsc47m192_group);
sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4);
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 smsc47m192_id[] = {
@ -658,7 +632,6 @@ static struct i2c_driver smsc47m192_driver = {
.name = "smsc47m192",
},
.probe = smsc47m192_probe,
.remove = smsc47m192_remove,
.id_table = smsc47m192_id,
.detect = smsc47m192_detect,
.address_list = normal_i2c,