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authorAxel Lin <axel.lin@ingics.com>2014-06-05 03:47:12 +0400
committerGuenter Roeck <linux@roeck-us.net>2014-06-12 19:36:47 +0400
commit31e3879127d4db56ad445fd948ca39c393ee65d7 (patch)
tree1441bcc12e1093246c060ae9fe05c66b6fe88c7b
parent590e8534447ce9f2f5e5e64681764079530ee8c7 (diff)
downloadlinux-31e3879127d4db56ad445fd948ca39c393ee65d7.tar.xz
hwmon: (ltc4151) Convert to devm_hwmon_device_register_with_groups
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> Tested-by: Per Dalén <per.dalen@appeartv.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
-rw-r--r--drivers/hwmon/ltc4151.c51
1 files changed, 13 insertions, 38 deletions
diff --git a/drivers/hwmon/ltc4151.c b/drivers/hwmon/ltc4151.c
index af81be1237c9..c86a18402496 100644
--- a/drivers/hwmon/ltc4151.c
+++ b/drivers/hwmon/ltc4151.c
@@ -47,7 +47,7 @@
#define LTC4151_ADIN_L 0x05
struct ltc4151_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex update_lock;
bool valid;
@@ -59,8 +59,8 @@ struct ltc4151_data {
static struct ltc4151_data *ltc4151_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ltc4151_data *data = i2c_get_clientdata(client);
+ struct ltc4151_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
struct ltc4151_data *ret = data;
mutex_lock(&data->update_lock);
@@ -159,7 +159,7 @@ static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ltc4151_show_value, NULL,
* Finally, construct an array of pointers to members of the above objects,
* as required for sysfs_create_group()
*/
-static struct attribute *ltc4151_attributes[] = {
+static struct attribute *ltc4151_attrs[] = {
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in2_input.dev_attr.attr,
@@ -167,54 +167,30 @@ static struct attribute *ltc4151_attributes[] = {
NULL,
};
-
-static const struct attribute_group ltc4151_group = {
- .attrs = ltc4151_attributes,
-};
+ATTRIBUTE_GROUPS(ltc4151);
static int ltc4151_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = client->adapter;
+ struct device *dev = &client->dev;
struct ltc4151_data *data;
- int ret;
+ struct device *hwmon_dev;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- 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->update_lock);
- /* Register sysfs hooks */
- ret = sysfs_create_group(&client->dev.kobj, &ltc4151_group);
- 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 out_hwmon_device_register;
- }
-
- return 0;
-
-out_hwmon_device_register:
- sysfs_remove_group(&client->dev.kobj, &ltc4151_group);
- return ret;
-}
-
-static int ltc4151_remove(struct i2c_client *client)
-{
- struct ltc4151_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &ltc4151_group);
-
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data,
+ ltc4151_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id ltc4151_id[] = {
@@ -229,7 +205,6 @@ static struct i2c_driver ltc4151_driver = {
.name = "ltc4151",
},
.probe = ltc4151_probe,
- .remove = ltc4151_remove,
.id_table = ltc4151_id,
};