hwmon: (w83l786ng) 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>
Acked-by: Kevin Lo <kevlo@kevlo.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 29 insertions, 57 deletions

diff --git a/drivers/hwmon/w83l786ng.c b/drivers/hwmon/w83l786ng.c
index 6caf33a5508b..330299613d38 100644
--- a/drivers/hwmon/w83l786ng.c
+++ b/drivers/hwmon/w83l786ng.c
@@ -124,7 +124,7 @@ DIV_TO_REG(long val)
 }
 
 struct w83l786ng_data {
-        struct device *hwmon_dev;
+        struct i2c_client *client;
         struct mutex update_lock;
         char valid;                     /* !=0 if following fields are valid */
         unsigned long last_updated;     /* In jiffies */
@@ -162,8 +162,8 @@ w83l786ng_write_value(struct i2c_client *client, u8 reg, u8 value)
 
 static struct w83l786ng_data *w83l786ng_update_device(struct device *dev)
 {
-        struct i2c_client *client = to_i2c_client(dev);
-        struct w83l786ng_data *data = i2c_get_clientdata(client);
+        struct w83l786ng_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         int i, j;
         u8 reg_tmp, pwmcfg;
 
@@ -252,8 +252,8 @@ store_in_##reg(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 w83l786ng_data *data = i2c_get_clientdata(client); \
+        struct w83l786ng_data *data = dev_get_drvdata(dev); \
+        struct i2c_client *client = data->client; \
         unsigned long val; \
         int err = kstrtoul(buf, 10, &val); \
         if (err) \
@@ -305,8 +305,8 @@ store_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 w83l786ng_data *data = i2c_get_clientdata(client);
+        struct w83l786ng_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         unsigned long val;
         int err;
 
@@ -343,8 +343,8 @@ store_fan_div(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 w83l786ng_data *data = i2c_get_clientdata(client);
+        struct w83l786ng_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
 
         unsigned long min;
         u8 tmp_fan_div;
@@ -434,8 +434,8 @@ store_temp(struct device *dev, struct device_attribute *attr,
             to_sensor_dev_attr_2(attr);
         int nr = sensor_attr->nr;
         int index = sensor_attr->index;
-        struct i2c_client *client = to_i2c_client(dev);
-        struct w83l786ng_data *data = i2c_get_clientdata(client);
+        struct w83l786ng_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         long val;
         int err;
 
@@ -489,8 +489,8 @@ store_pwm_mode(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 w83l786ng_data *data = i2c_get_clientdata(client);
+        struct w83l786ng_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         u8 reg;
         unsigned long val;
         int err;
@@ -517,8 +517,8 @@ store_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 w83l786ng_data *data = i2c_get_clientdata(client);
+        struct w83l786ng_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         unsigned long val;
         int err;
 
@@ -541,8 +541,8 @@ store_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 w83l786ng_data *data = i2c_get_clientdata(client);
+        struct w83l786ng_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         u8 reg;
         unsigned long val;
         int err;
@@ -597,8 +597,8 @@ store_tolerance(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 w83l786ng_data *data = i2c_get_clientdata(client);
+        struct w83l786ng_data *data = dev_get_drvdata(dev);
+        struct i2c_client *client = data->client;
         u8 tol_tmp, tol_mask;
         unsigned long val;
         int err;
@@ -653,7 +653,7 @@ static struct sensor_device_attribute sda_tolerance[] = {
 #define TOLERANCE_UNIT_ATTRS(X) \
         &sda_tolerance[X].dev_attr.attr
 
-static struct attribute *w83l786ng_attributes[] = {
+static struct attribute *w83l786ng_attrs[] = {
         IN_UNIT_ATTRS(0),
         IN_UNIT_ATTRS(1),
         IN_UNIT_ATTRS(2),
@@ -668,9 +668,7 @@ static struct attribute *w83l786ng_attributes[] = {
         NULL
 };
 
-static const struct attribute_group w83l786ng_group = {
-        .attrs = w83l786ng_attributes,
-};
+ATTRIBUTE_GROUPS(w83l786ng);
 
 static int
 w83l786ng_detect(struct i2c_client *client, struct i2c_board_info *info)
@@ -725,15 +723,15 @@ w83l786ng_probe(struct i2c_client *client, const struct i2c_device_id *id)
 {
         struct device *dev = &client->dev;
         struct w83l786ng_data *data;
-        int i, err = 0;
+        struct device *hwmon_dev;
+        int i;
         u8 reg_tmp;
 
-        data = devm_kzalloc(&client->dev, sizeof(struct w83l786ng_data),
-                            GFP_KERNEL);
+        data = devm_kzalloc(dev, sizeof(struct w83l786ng_data), GFP_KERNEL);
         if (!data)
                 return -ENOMEM;
 
-        i2c_set_clientdata(client, data);
+        data->client = client;
         mutex_init(&data->update_lock);
 
         /* Initialize the chip */
@@ -750,35 +748,10 @@ w83l786ng_probe(struct i2c_client *client, const struct i2c_device_id *id)
         data->fan_div[0] = reg_tmp & 0x07;
         data->fan_div[1] = (reg_tmp >> 4) & 0x07;
 
-        /* Register sysfs hooks */
-        err = sysfs_create_group(&client->dev.kobj, &w83l786ng_group);
-        if (err)
-                goto exit_remove;
-
-        data->hwmon_dev = hwmon_device_register(dev);
-        if (IS_ERR(data->hwmon_dev)) {
-                err = PTR_ERR(data->hwmon_dev);
-                goto exit_remove;
-        }
-
-        return 0;
-
-        /* Unregister sysfs hooks */
-
-exit_remove:
-        sysfs_remove_group(&client->dev.kobj, &w83l786ng_group);
-        return err;
-}
-
-static int
-w83l786ng_remove(struct i2c_client *client)
-{
-        struct w83l786ng_data *data = i2c_get_clientdata(client);
-
-        hwmon_device_unregister(data->hwmon_dev);
-        sysfs_remove_group(&client->dev.kobj, &w83l786ng_group);
-
-        return 0;
+        hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+                                                           data,
+                                                           w83l786ng_groups);
+        return PTR_ERR_OR_ZERO(hwmon_dev);
 }
 
 static const struct i2c_device_id w83l786ng_id[] = {
@@ -793,7 +766,6 @@ static struct i2c_driver w83l786ng_driver = {
                    .name = "w83l786ng",
         },
         .probe          = w83l786ng_probe,
-        .remove         = w83l786ng_remove,
         .id_table       = w83l786ng_id,
         .detect         = w83l786ng_detect,
         .address_list   = normal_i2c,