hwmon: (gl520sm) 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>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 35 insertions, 61 deletions

diff --git a/drivers/hwmon/gl520sm.c b/drivers/hwmon/gl520sm.c
index 86c08a17210d..dee93ec87d02 100644
--- a/drivers/hwmon/gl520sm.c
+++ b/drivers/hwmon/gl520sm.c
@@ -75,7 +75,8 @@ static const u8 GL520_REG_TEMP_MAX_HYST[]	= { 0x06, 0x18 };
 
 /* Client data */
 struct gl520_data {
-        struct device *hwmon_dev;
+        struct i2c_client *client;
+        const struct attribute_group *groups[3];
         struct mutex update_lock;
         char valid;             /* zero until the following fields are valid */
         unsigned long last_updated;     /* in jiffies */
@@ -121,8 +122,8 @@ static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value)
 
 static struct gl520_data *gl520_update_device(struct device *dev)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int val, i;
 
         mutex_lock(&data->update_lock);
@@ -255,8 +256,8 @@ static ssize_t get_in_max(struct device *dev, struct device_attribute *attr,
 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
                           const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int n = to_sensor_dev_attr(attr)->index;
         u8 r;
         long v;
@@ -289,8 +290,8 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
                           const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int n = to_sensor_dev_attr(attr)->index;
         u8 r;
         long v;
@@ -390,8 +391,8 @@ static ssize_t get_fan_off(struct device *dev, struct device_attribute *attr,
 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
                            const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int n = to_sensor_dev_attr(attr)->index;
         u8 r;
         unsigned long v;
@@ -429,8 +430,8 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
                            const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int n = to_sensor_dev_attr(attr)->index;
         u8 r;
         unsigned long v;
@@ -478,8 +479,8 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
                            const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         u8 r;
         unsigned long v;
         int err;
@@ -546,8 +547,8 @@ static ssize_t get_temp_max_hyst(struct device *dev,
 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
                             const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int n = to_sensor_dev_attr(attr)->index;
         long v;
         int err;
@@ -566,8 +567,8 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
 static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
                                  *attr, const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int n = to_sensor_dev_attr(attr)->index;
         long v;
         int err;
@@ -619,8 +620,8 @@ static ssize_t get_beep_mask(struct device *dev, struct device_attribute *attr,
 static ssize_t set_beep_enable(struct device *dev, struct device_attribute
                                *attr, const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         u8 r;
         unsigned long v;
         int err;
@@ -643,8 +644,8 @@ static ssize_t set_beep_enable(struct device *dev, struct device_attribute
 static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
                              const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         unsigned long r;
         int err;
 
@@ -697,8 +698,8 @@ static ssize_t get_beep(struct device *dev, struct device_attribute *attr,
 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
                         const char *buf, size_t count)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct gl520_data *data = i2c_get_clientdata(client);
+        struct gl520_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int bitnr = to_sensor_dev_attr(attr)->index;
         unsigned long bit;
 
@@ -877,58 +878,32 @@ static void gl520_init_client(struct i2c_client *client)
 static int gl520_probe(struct i2c_client *client,
                        const struct i2c_device_id *id)
 {
+        struct device *dev = &client->dev;
+        struct device *hwmon_dev;
         struct gl520_data *data;
-        int err;
 
-        data = devm_kzalloc(&client->dev, sizeof(struct gl520_data),
-                            GFP_KERNEL);
+        data = devm_kzalloc(dev, sizeof(struct gl520_data), GFP_KERNEL);
         if (!data)
                 return -ENOMEM;
 
         i2c_set_clientdata(client, data);
         mutex_init(&data->update_lock);
+        data->client = client;
 
         /* Initialize the GL520SM chip */
         gl520_init_client(client);
 
-        /* Register sysfs hooks */
-        err = sysfs_create_group(&client->dev.kobj, &gl520_group);
-        if (err)
-                return err;
+        /* sysfs hooks */
+        data->groups[0] = &gl520_group;
 
         if (data->two_temps)
-                err = sysfs_create_group(&client->dev.kobj, &gl520_group_temp2);
+                data->groups[1] = &gl520_group_temp2;
         else
-                err = sysfs_create_group(&client->dev.kobj, &gl520_group_in4);
-
-        if (err)
-                goto exit_remove_files;
-
-        data->hwmon_dev = hwmon_device_register(&client->dev);
-        if (IS_ERR(data->hwmon_dev)) {
-                err = PTR_ERR(data->hwmon_dev);
-                goto exit_remove_files;
-        }
-
-        return 0;
+                data->groups[1] = &gl520_group_in4;
 
-exit_remove_files:
-        sysfs_remove_group(&client->dev.kobj, &gl520_group);
-        sysfs_remove_group(&client->dev.kobj, &gl520_group_in4);
-        sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2);
-        return err;
-}
-
-static int gl520_remove(struct i2c_client *client)
-{
-        struct gl520_data *data = i2c_get_clientdata(client);
-
-        hwmon_device_unregister(data->hwmon_dev);
-        sysfs_remove_group(&client->dev.kobj, &gl520_group);
-        sysfs_remove_group(&client->dev.kobj, &gl520_group_in4);
-        sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2);
-
-        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 gl520_id[] = {
@@ -943,7 +918,6 @@ static struct i2c_driver gl520_driver = {
                 .name   = "gl520sm",
         },
         .probe          = gl520_probe,
-        .remove         = gl520_remove,
         .id_table       = gl520_id,
         .detect         = gl520_detect,
         .address_list   = normal_i2c,