hwmon: (lm90) Convert to use 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>
Signed-off-by: Jean Delvare <jdelvare@suse.de>

1 files changed, 17 insertions, 22 deletions

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 9ad7401f3b2c..c9ff08dbe10c 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -365,6 +365,7 @@ enum lm90_temp11_reg_index {
  */
 
 struct lm90_data {
+        struct i2c_client *client;
         struct device *hwmon_dev;
         const struct attribute_group *groups[6];
         struct mutex update_lock;
@@ -514,8 +515,8 @@ static void lm90_set_convrate(struct i2c_client *client, struct lm90_data *data,
 
 static struct lm90_data *lm90_update_device(struct device *dev)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm90_data *data = i2c_get_clientdata(client);
+        struct lm90_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         unsigned long next_update;
 
         mutex_lock(&data->update_lock);
@@ -794,8 +795,8 @@ static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
         };
 
         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm90_data *data = i2c_get_clientdata(client);
+        struct lm90_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int nr = attr->index;
         long val;
         int err;
@@ -861,8 +862,8 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
         };
 
         struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm90_data *data = i2c_get_clientdata(client);
+        struct lm90_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int nr = attr->nr;
         int index = attr->index;
         long val;
@@ -923,8 +924,8 @@ static ssize_t show_temphyst(struct device *dev,
 static ssize_t set_temphyst(struct device *dev, struct device_attribute *dummy,
                             const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm90_data *data = i2c_get_clientdata(client);
+        struct lm90_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         long val;
         int err;
         int temp;
@@ -977,8 +978,8 @@ static ssize_t set_update_interval(struct device *dev,
                                    struct device_attribute *attr,
                                    const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm90_data *data = i2c_get_clientdata(client);
+        struct lm90_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         unsigned long val;
         int err;
 
@@ -1412,10 +1413,9 @@ static void lm90_restore_conf(struct i2c_client *client, struct lm90_data *data)
                                   data->config_orig);
 }
 
-static void lm90_init_client(struct i2c_client *client)
+static void lm90_init_client(struct i2c_client *client, struct lm90_data *data)
 {
         u8 config, convrate;
-        struct lm90_data *data = i2c_get_clientdata(client);
 
         if (lm90_read_reg(client, LM90_REG_R_CONVRATE, &convrate) < 0) {
                 dev_warn(&client->dev, "Failed to read convrate register!\n");
@@ -1530,6 +1530,7 @@ static int lm90_probe(struct i2c_client *client,
         if (!data)
                 return -ENOMEM;
 
+        data->client = client;
         i2c_set_clientdata(client, data);
         mutex_init(&data->update_lock);
 
@@ -1556,7 +1557,7 @@ static int lm90_probe(struct i2c_client *client,
         data->max_convrate = lm90_params[data->kind].max_convrate;
 
         /* Initialize the LM90 chip */
-        lm90_init_client(client);
+        lm90_init_client(client, data);
 
         /* Register sysfs hooks */
         data->groups[groups++] = &lm90_group;
@@ -1579,14 +1580,11 @@ static int lm90_probe(struct i2c_client *client,
                         goto exit_restore;
         }
 
-        err = sysfs_create_groups(&dev->kobj, data->groups);
-        if (err)
-                goto exit_remove_pec;
-
-        data->hwmon_dev = hwmon_device_register(dev);
+        data->hwmon_dev = hwmon_device_register_with_groups(dev, client->name,
+                                                            data, data->groups);
         if (IS_ERR(data->hwmon_dev)) {
                 err = PTR_ERR(data->hwmon_dev);
-                goto exit_remove_files;
+                goto exit_remove_pec;
         }
 
         if (client->irq) {
@@ -1605,8 +1603,6 @@ static int lm90_probe(struct i2c_client *client,
 
 exit_unregister:
         hwmon_device_unregister(data->hwmon_dev);
-exit_remove_files:
-        sysfs_remove_groups(&dev->kobj, data->groups);
 exit_remove_pec:
         device_remove_file(dev, &dev_attr_pec);
 exit_restore:
@@ -1621,7 +1617,6 @@ static int lm90_remove(struct i2c_client *client)
         struct lm90_data *data = i2c_get_clientdata(client);
 
         hwmon_device_unregister(data->hwmon_dev);
-        sysfs_remove_groups(&client->dev.kobj, data->groups);
         device_remove_file(&client->dev, &dev_attr_pec);
         lm90_restore_conf(client, data);
         regulator_disable(data->regulator);