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@xxxxxxxxxxxx>
---
drivers/hwmon/tmp421.c | 47 +++++++++++++++--------------------------------
1 file changed, 15 insertions(+), 32 deletions(-)
diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
index ae26b06..7bab7a9 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,
--
1.7.9.7
_______________________________________________
lm-sensors mailing list
lm-sensors@xxxxxxxxxxxxxx
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
