Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.
Signed-off-by: Axel Lin <axel.lin@xxxxxxxxxx>
---
drivers/hwmon/adt7411.c | 59 +++++++++++++++++--------------------------------
1 file changed, 20 insertions(+), 39 deletions(-)
diff --git a/drivers/hwmon/adt7411.c b/drivers/hwmon/adt7411.c
index d9299de..827c037 100644
--- a/drivers/hwmon/adt7411.c
+++ b/drivers/hwmon/adt7411.c
@@ -51,7 +51,7 @@ struct adt7411_data {
struct mutex update_lock;
unsigned long next_update;
int vref_cached;
- struct device *hwmon_dev;
+ struct i2c_client *client;
};
/*
@@ -111,7 +111,8 @@ static int adt7411_modify_bit(struct i2c_client *client, u8 reg, u8 bit,
static ssize_t adt7411_show_vdd(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int ret = adt7411_read_10_bit(client, ADT7411_REG_INT_TEMP_VDD_LSB,
ADT7411_REG_VDD_MSB, 2);
@@ -121,7 +122,8 @@ static ssize_t adt7411_show_vdd(struct device *dev,
static ssize_t adt7411_show_temp(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int val = adt7411_read_10_bit(client, ADT7411_REG_INT_TEMP_VDD_LSB,
ADT7411_REG_INT_TEMP_MSB, 0);
@@ -137,8 +139,8 @@ static ssize_t adt7411_show_input(struct device *dev,
struct device_attribute *attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7411_data *data = i2c_get_clientdata(client);
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int val;
u8 lsb_reg, lsb_shift;
@@ -180,7 +182,8 @@ static ssize_t adt7411_show_bit(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute_2 *attr2 = to_sensor_dev_attr_2(attr);
- struct i2c_client *client = to_i2c_client(dev);
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int ret = i2c_smbus_read_byte_data(client, attr2->index);
return ret < 0 ? ret : sprintf(buf, "%u\n", !!(ret & attr2->nr));
@@ -191,8 +194,8 @@ static ssize_t adt7411_set_bit(struct device *dev,
size_t count)
{
struct sensor_device_attribute_2 *s_attr2 = to_sensor_dev_attr_2(attr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7411_data *data = i2c_get_clientdata(client);
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int ret;
unsigned long flag;
@@ -245,9 +248,7 @@ static struct attribute *adt7411_attrs[] = {
NULL
};
-static const struct attribute_group adt7411_attr_grp = {
- .attrs = adt7411_attrs,
-};
+ATTRIBUTE_GROUPS(adt7411);
static int adt7411_detect(struct i2c_client *client,
struct i2c_board_info *info)
@@ -281,14 +282,17 @@ static int adt7411_detect(struct i2c_client *client,
static int adt7411_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device *dev = &client->dev;
struct adt7411_data *data;
+ struct device *hwmon_dev;
int ret;
- data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
+ data->client = client;
mutex_init(&data->device_lock);
mutex_init(&data->update_lock);
@@ -300,32 +304,10 @@ static int adt7411_probe(struct i2c_client *client,
/* force update on first occasion */
data->next_update = jiffies;
- ret = sysfs_create_group(&client->dev.kobj, &adt7411_attr_grp);
- 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 exit_remove;
- }
-
- dev_info(&client->dev, "successfully registered\n");
-
- return 0;
-
- exit_remove:
- sysfs_remove_group(&client->dev.kobj, &adt7411_attr_grp);
- return ret;
-}
-
-static int adt7411_remove(struct i2c_client *client)
-{
- struct adt7411_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &adt7411_attr_grp);
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data,
+ adt7411_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id adt7411_id[] = {
@@ -339,7 +321,6 @@ static struct i2c_driver adt7411_driver = {
.name = "adt7411",
},
.probe = adt7411_probe,
- .remove = adt7411_remove,
.id_table = adt7411_id,
.detect = adt7411_detect,
.address_list = normal_i2c,
--
1.9.1
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