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hwmon: (g760a) Convert to devm_hwmon_device_register_with_groups

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Use ATTRIBUTE_GROUPS macro and 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 2014-07-01 10:57:38 +08:00 committed by Guenter Roeck
parent 15ac4ddb32
commit e47c39b3a8
1 changed files with 13 additions and 40 deletions
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53
drivers/hwmon/g760a.c
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@ -38,7 +38,6 @@ enum g760a_regs {
struct g760a_data {
struct i2c_client *client;
struct device *hwmon_dev;
struct mutex update_lock;
/* board specific parameters */
@ -86,8 +85,8 @@ static int g760a_write_value(struct i2c_client *client, enum g760a_regs reg,
static struct g760a_data *g760a_update_client(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct g760a_data *data = i2c_get_clientdata(client);
struct g760a_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
mutex_lock(&data->update_lock);
@ -143,8 +142,8 @@ static ssize_t get_pwm(struct device *dev, struct device_attribute *da,
static ssize_t set_pwm(struct device *dev, struct device_attribute *da,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct g760a_data *data = g760a_update_client(dev);
struct i2c_client *client = data->client;
unsigned long val;
if (kstrtoul(buf, 10, &val))
@ -162,16 +161,14 @@ static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, get_pwm, set_pwm);
static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL);
static DEVICE_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL);
static struct attribute *g760a_attributes[] = {
static struct attribute *g760a_attrs[] = {
&dev_attr_pwm1.attr,
&dev_attr_fan1_input.attr,
&dev_attr_fan1_alarm.attr,
NULL
};
static const struct attribute_group g760a_group = {
.attrs = g760a_attributes,
};
ATTRIBUTE_GROUPS(g760a);
/*
* new-style driver model code
@ -180,20 +177,17 @@ static const struct attribute_group g760a_group = {
static int g760a_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct g760a_data *data;
int err;
struct device *hwmon_dev;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA))
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
data = devm_kzalloc(&client->dev, sizeof(struct g760a_data),
GFP_KERNEL);
data = devm_kzalloc(dev, sizeof(struct g760a_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
data->client = client;
mutex_init(&data->update_lock);
@ -201,30 +195,10 @@ static int g760a_probe(struct i2c_client *client,
data->fan_div = G760A_DEFAULT_FAN_DIV;
data->clk = G760A_DEFAULT_CLK;
/* Register sysfs hooks */
err = sysfs_create_group(&client->dev.kobj, &g760a_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);
goto error_hwmon_device_register;
}
return 0;
error_hwmon_device_register:
sysfs_remove_group(&client->dev.kobj, &g760a_group);
return err;
}
static int g760a_remove(struct i2c_client *client)
{
struct g760a_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &g760a_group);
return 0;
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
data,
g760a_groups);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id g760a_id[] = {
@ -238,7 +212,6 @@ static struct i2c_driver g760a_driver = {
.name = "g760a",
},
.probe = g760a_probe,
.remove = g760a_remove,
.id_table = g760a_id,
};