hwmon: (lm75) Convert to use hwmon_device_register_with_groups

Simplify code and attach hwmon attributes to hwmon device.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 20 insertions, 31 deletions

diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 84a55eacd903..479ffbeed3f8 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -72,6 +72,7 @@ static const u8 LM75_REG_TEMP[3] = {
 
 /* Each client has this additional data */
 struct lm75_data {
+        struct i2c_client       *client;
         struct device           *hwmon_dev;
         struct thermal_zone_device      *tz;
         struct mutex            update_lock;
@@ -130,8 +131,8 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
                         const char *buf, size_t count)
 {
         struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm75_data *data = i2c_get_clientdata(client);
+        struct lm75_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int nr = attr->index;
         long temp;
         int error;
@@ -165,17 +166,14 @@ static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
                         show_temp, set_temp, 2);
 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
 
-static struct attribute *lm75_attributes[] = {
+static struct attribute *lm75_attrs[] = {
         &sensor_dev_attr_temp1_input.dev_attr.attr,
         &sensor_dev_attr_temp1_max.dev_attr.attr,
         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
 
         NULL
 };
-
-static const struct attribute_group lm75_group = {
-        .attrs = lm75_attributes,
-};
+ATTRIBUTE_GROUPS(lm75);
 
 /*-----------------------------------------------------------------------*/
 
@@ -184,6 +182,7 @@ static const struct attribute_group lm75_group = {
 static int
 lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
 {
+        struct device *dev = &client->dev;
         struct lm75_data *data;
         int status;
         u8 set_mask, clr_mask;
@@ -194,10 +193,11 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
                         I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
                 return -EIO;
 
-        data = devm_kzalloc(&client->dev, sizeof(struct lm75_data), GFP_KERNEL);
+        data = devm_kzalloc(dev, sizeof(struct lm75_data), GFP_KERNEL);
         if (!data)
                 return -ENOMEM;
 
+        data->client = client;
         i2c_set_clientdata(client, data);
         mutex_init(&data->update_lock);
 
@@ -269,7 +269,7 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
         /* configure as specified */
         status = lm75_read_value(client, LM75_REG_CONF);
         if (status < 0) {
-                dev_dbg(&client->dev, "Can't read config? %d\n", status);
+                dev_dbg(dev, "Can't read config? %d\n", status);
                 return status;
         }
         data->orig_conf = status;
@@ -277,43 +277,32 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
         new |= set_mask;
         if (status != new)
                 lm75_write_value(client, LM75_REG_CONF, new);
-        dev_dbg(&client->dev, "Config %02x\n", new);
+        dev_dbg(dev, "Config %02x\n", new);
 
-        /* Register sysfs hooks */
-        status = sysfs_create_group(&client->dev.kobj, &lm75_group);
-        if (status)
-                return status;
+        data->hwmon_dev = hwmon_device_register_with_groups(dev, client->name,
+                                                            data, lm75_groups);
+        if (IS_ERR(data->hwmon_dev))
+                return PTR_ERR(data->hwmon_dev);
 
-        data->hwmon_dev = hwmon_device_register(&client->dev);
-        if (IS_ERR(data->hwmon_dev)) {
-                status = PTR_ERR(data->hwmon_dev);
-                goto exit_remove;
-        }
-
-        data->tz = thermal_zone_of_sensor_register(&client->dev,
+        data->tz = thermal_zone_of_sensor_register(data->hwmon_dev,
                                                    0,
-                                                   &client->dev,
+                                                   data->hwmon_dev,
                                                    lm75_read_temp, NULL);
         if (IS_ERR(data->tz))
                 data->tz = NULL;
 
-        dev_info(&client->dev, "%s: sensor '%s'\n",
+        dev_info(dev, "%s: sensor '%s'\n",
                  dev_name(data->hwmon_dev), client->name);
 
         return 0;
-
-exit_remove:
-        sysfs_remove_group(&client->dev.kobj, &lm75_group);
-        return status;
 }
 
 static int lm75_remove(struct i2c_client *client)
 {
         struct lm75_data *data = i2c_get_clientdata(client);
 
-        thermal_zone_of_sensor_unregister(&client->dev, data->tz);
+        thermal_zone_of_sensor_unregister(data->hwmon_dev, data->tz);
         hwmon_device_unregister(data->hwmon_dev);
-        sysfs_remove_group(&client->dev.kobj, &lm75_group);
         lm75_write_value(client, LM75_REG_CONF, data->orig_conf);
         return 0;
 }
@@ -507,8 +496,8 @@ static int lm75_write_value(struct i2c_client *client, u8 reg, u16 value)
 
 static struct lm75_data *lm75_update_device(struct device *dev)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm75_data *data = i2c_get_clientdata(client);
+        struct lm75_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         struct lm75_data *ret = data;
 
         mutex_lock(&data->update_lock);