hwmon: (lm85) Convert to devm_hwmon_device_register_with_groups

Use devm_hwmon_device_register_with_groups() to simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 51 insertions, 93 deletions

diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index 9fdf1c021007..2b4b419273fe 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -302,7 +302,8 @@ struct lm85_autofan {
  * The structure is dynamically allocated.
  */
 struct lm85_data {
-        struct device *hwmon_dev;
+        struct i2c_client *client;
+        const struct attribute_group *groups[6];
         const int *freq_map;
         enum chips type;
 
@@ -382,8 +383,8 @@ static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
 
 static struct lm85_data *lm85_update_device(struct device *dev)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int i;
 
         mutex_lock(&data->update_lock);
@@ -584,8 +585,8 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
                 const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         unsigned long val;
         int err;
 
@@ -708,8 +709,8 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
                 const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         unsigned long val;
         int err;
 
@@ -750,8 +751,8 @@ static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
                 *attr, const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         u8 config;
         unsigned long val;
         int err;
@@ -808,8 +809,8 @@ static ssize_t set_pwm_freq(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         unsigned long val;
         int err;
 
@@ -875,8 +876,8 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
                 const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         long val;
         int err;
 
@@ -903,8 +904,8 @@ static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
                 const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         long val;
         int err;
 
@@ -959,8 +960,8 @@ static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
                 const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         long val;
         int err;
 
@@ -990,8 +991,8 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
                 const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         long val;
         int err;
 
@@ -1036,8 +1037,8 @@ static ssize_t set_pwm_auto_channels(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         long val;
         int err;
 
@@ -1066,8 +1067,8 @@ static ssize_t set_pwm_auto_pwm_min(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         unsigned long val;
         int err;
 
@@ -1095,8 +1096,8 @@ static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         u8 tmp;
         long val;
         int err;
@@ -1146,8 +1147,8 @@ static ssize_t set_temp_auto_temp_off(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int min;
         long val;
         int err;
@@ -1183,8 +1184,8 @@ static ssize_t set_temp_auto_temp_min(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         long val;
         int err;
 
@@ -1222,8 +1223,8 @@ static ssize_t set_temp_auto_temp_max(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int min;
         long val;
         int err;
@@ -1256,8 +1257,8 @@ static ssize_t set_temp_auto_temp_crit(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
         int nr = to_sensor_dev_attr(attr)->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct lm85_data *data = i2c_get_clientdata(client);
+        struct lm85_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         long val;
         int err;
 
@@ -1548,30 +1549,18 @@ static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
         return 0;
 }
 
-static void lm85_remove_files(struct i2c_client *client, struct lm85_data *data)
-{
-        sysfs_remove_group(&client->dev.kobj, &lm85_group);
-        if (data->type != emc6d103s) {
-                sysfs_remove_group(&client->dev.kobj, &lm85_group_minctl);
-                sysfs_remove_group(&client->dev.kobj, &lm85_group_temp_off);
-        }
-        if (!data->has_vid5)
-                sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
-        if (data->type == emc6d100)
-                sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
-}
-
-static int lm85_probe(struct i2c_client *client,
-                      const struct i2c_device_id *id)
+static int lm85_probe(struct i2c_client *client, const struct i2c_device_id *id)
 {
+        struct device *dev = &client->dev;
+        struct device *hwmon_dev;
         struct lm85_data *data;
-        int err;
+        int idx = 0;
 
-        data = devm_kzalloc(&client->dev, sizeof(struct lm85_data), GFP_KERNEL);
+        data = devm_kzalloc(dev, sizeof(struct lm85_data), GFP_KERNEL);
         if (!data)
                 return -ENOMEM;
 
-        i2c_set_clientdata(client, data);
+        data->client = client;
         data->type = id->driver_data;
         mutex_init(&data->update_lock);
 
@@ -1596,20 +1585,13 @@ static int lm85_probe(struct i2c_client *client,
         /* Initialize the LM85 chip */
         lm85_init_client(client);
 
-        /* Register sysfs hooks */
-        err = sysfs_create_group(&client->dev.kobj, &lm85_group);
-        if (err)
-                return err;
+        /* sysfs hooks */
+        data->groups[idx++] = &lm85_group;
 
         /* minctl and temp_off exist on all chips except emc6d103s */
         if (data->type != emc6d103s) {
-                err = sysfs_create_group(&client->dev.kobj, &lm85_group_minctl);
-                if (err)
-                        goto err_remove_files;
-                err = sysfs_create_group(&client->dev.kobj,
-                                         &lm85_group_temp_off);
-                if (err)
-                        goto err_remove_files;
+                data->groups[idx++] = &lm85_group_minctl;
+                data->groups[idx++] = &lm85_group_temp_off;
         }
 
         /*
@@ -1622,39 +1604,16 @@ static int lm85_probe(struct i2c_client *client,
                         data->has_vid5 = true;
         }
 
-        if (!data->has_vid5) {
-                err = sysfs_create_group(&client->dev.kobj, &lm85_group_in4);
-                if (err)
-                        goto err_remove_files;
-        }
+        if (!data->has_vid5)
+                data->groups[idx++] = &lm85_group_in4;
 
         /* The EMC6D100 has 3 additional voltage inputs */
-        if (data->type == emc6d100) {
-                err = sysfs_create_group(&client->dev.kobj, &lm85_group_in567);
-                if (err)
-                        goto err_remove_files;
-        }
-
-        data->hwmon_dev = hwmon_device_register(&client->dev);
-        if (IS_ERR(data->hwmon_dev)) {
-                err = PTR_ERR(data->hwmon_dev);
-                goto err_remove_files;
-        }
-
-        return 0;
-
-        /* Error out and cleanup code */
- err_remove_files:
-        lm85_remove_files(client, data);
-        return err;
-}
+        if (data->type == emc6d100)
+                data->groups[idx++] = &lm85_group_in567;
 
-static int lm85_remove(struct i2c_client *client)
-{
-        struct lm85_data *data = i2c_get_clientdata(client);
-        hwmon_device_unregister(data->hwmon_dev);
-        lm85_remove_files(client, data);
-        return 0;
+        hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+                                                           data, data->groups);
+        return PTR_ERR_OR_ZERO(hwmon_dev);
 }
 
 static const struct i2c_device_id lm85_id[] = {
@@ -1679,7 +1638,6 @@ static struct i2c_driver lm85_driver = {
                 .name   = "lm85",
         },
         .probe          = lm85_probe,
-        .remove         = lm85_remove,
         .id_table       = lm85_id,
         .detect         = lm85_detect,
         .address_list   = normal_i2c,