hwmon: (lm95245) Convert to use devm_hwmon_device_register_with_groups
Simplify code, reduce code size, and attach hwmon attributes
to hwmon device.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
diff --git a/drivers/hwmon/lm95245.c b/drivers/hwmon/lm95245.c
index 07d69dc..acf3679 100644
--- a/drivers/hwmon/lm95245.c
+++ b/drivers/hwmon/lm95245.c
@@ -115,7 +115,7 @@
/* Client data (each client gets its own) */
struct lm95245_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex update_lock;
unsigned long last_updated; /* in jiffies */
unsigned long interval; /* in msecs */
@@ -140,8 +140,8 @@
static struct lm95245_data *lm95245_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
mutex_lock(&data->update_lock);
@@ -248,9 +248,9 @@
static ssize_t set_limit(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = data->client;
unsigned long val;
if (kstrtoul(buf, 10, &val) < 0)
@@ -284,9 +284,9 @@
static ssize_t set_crit_hyst(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = data->client;
unsigned long val;
int hyst, limit;
@@ -312,8 +312,7 @@
static ssize_t show_type(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE - 1,
data->config2 & CFG2_REMOTE_TT ? "1\n" : "2\n");
@@ -322,8 +321,8 @@
static ssize_t set_type(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
if (kstrtoul(buf, 10, &val) < 0)
@@ -369,8 +368,8 @@
static ssize_t set_interval(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
if (kstrtoul(buf, 10, &val) < 0)
@@ -408,7 +407,7 @@
static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval,
set_interval);
-static struct attribute *lm95245_attributes[] = {
+static struct attribute *lm95245_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_crit.dev_attr.attr,
&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
@@ -422,10 +421,7 @@
&dev_attr_update_interval.attr,
NULL
};
-
-static const struct attribute_group lm95245_group = {
- .attrs = lm95245_attributes,
-};
+ATTRIBUTE_GROUPS(lm95245);
/* Return 0 if detection is successful, -ENODEV otherwise */
static int lm95245_detect(struct i2c_client *new_client,
@@ -446,10 +442,9 @@
return 0;
}
-static void lm95245_init_client(struct i2c_client *client)
+static void lm95245_init_client(struct i2c_client *client,
+ struct lm95245_data *data)
{
- struct lm95245_data *data = i2c_get_clientdata(client);
-
data->interval = lm95245_read_conversion_rate(client);
data->config1 = i2c_smbus_read_byte_data(client,
@@ -465,49 +460,27 @@
}
}
-static int lm95245_probe(struct i2c_client *new_client,
+static int lm95245_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device *dev = &client->dev;
struct lm95245_data *data;
- int err;
+ struct device *hwmon_dev;
- data = devm_kzalloc(&new_client->dev, sizeof(struct lm95245_data),
- GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(struct lm95245_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(new_client, data);
+ data->client = client;
mutex_init(&data->update_lock);
/* Initialize the LM95245 chip */
- lm95245_init_client(new_client);
+ lm95245_init_client(client, data);
- /* Register sysfs hooks */
- err = sysfs_create_group(&new_client->dev.kobj, &lm95245_group);
- if (err)
- return err;
-
- data->hwmon_dev = hwmon_device_register(&new_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(&new_client->dev.kobj, &lm95245_group);
- return err;
-}
-
-static int lm95245_remove(struct i2c_client *client)
-{
- struct lm95245_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &lm95245_group);
-
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data,
+ lm95245_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
/* Driver data (common to all clients) */
@@ -523,7 +496,6 @@
.name = DEVNAME,
},
.probe = lm95245_probe,
- .remove = lm95245_remove,
.id_table = lm95245_id,
.detect = lm95245_detect,
.address_list = normal_i2c,