[PATCH RESEND 3/3] hwmon: w83793d: convert to use devm_i2c_new_dummy_device

[Wolfram Sang]

And simplify the error handling.

Signed-off-by: Wolfram Sang <wsa+rene...@sang-engineering.com>
---
 drivers/hwmon/w83793.c | 30 ++++++++----------------------
 1 file changed, 8 insertions(+), 22 deletions(-)

diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c
index 46f5dfec8d0a..9df48b70c70c 100644
--- a/drivers/hwmon/w83793.c
+++ b/drivers/hwmon/w83793.c
@@ -1551,9 +1551,6 @@ static int w83793_remove(struct i2c_client *client)
        for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
                device_remove_file(dev, &w83793_temp[i].dev_attr);
 
-       i2c_unregister_device(data->lm75[0]);
-       i2c_unregister_device(data->lm75[1]);
-
        /* Decrease data reference counter */
        mutex_lock(&watchdog_data_mutex);
        kref_put(&data->kref, w83793_release_resources);
@@ -1565,7 +1562,7 @@ static int w83793_remove(struct i2c_client *client)
 static int
 w83793_detect_subclients(struct i2c_client *client)
 {
-       int i, id, err;
+       int i, id;
        int address = client->addr;
        u8 tmp;
        struct i2c_adapter *adapter = client->adapter;
@@ -1580,8 +1577,7 @@ w83793_detect_subclients(struct i2c_client *client)
                                        "invalid subclient "
                                        "address %d; must be 0x48-0x4f\n",
                                        force_subclients[i]);
-                               err = -EINVAL;
-                               goto ERROR_SC_0;
+                               return -EINVAL;
                        }
                }
                w83793_write_value(client, W83793_REG_I2C_SUBADDR,
@@ -1591,28 +1587,21 @@ w83793_detect_subclients(struct i2c_client *client)
 
        tmp = w83793_read_value(client, W83793_REG_I2C_SUBADDR);
        if (!(tmp & 0x08))
-               data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (tmp & 0x7));
+               data->lm75[0] = devm_i2c_new_dummy_device(&client->dev, adapter,
+                                                         0x48 + (tmp & 0x7));
        if (!(tmp & 0x80)) {
-               if ((data->lm75[0] != NULL)
+               if (!IS_ERR(data->lm75[0])
                    && ((tmp & 0x7) == ((tmp >> 4) & 0x7))) {
                        dev_err(&client->dev,
                                "duplicate addresses 0x%x, "
                                "use force_subclients\n", data->lm75[0]->addr);
-                       err = -ENODEV;
-                       goto ERROR_SC_1;
+                       return -ENODEV;
                }
-               data->lm75[1] = i2c_new_dummy(adapter,
-                                             0x48 + ((tmp >> 4) & 0x7));
+               data->lm75[1] = devm_i2c_new_dummy_device(&client->dev, adapter,
+                                                         0x48 + ((tmp >> 4) & 
0x7));
        }
 
        return 0;
-
-       /* Undo inits in case of errors */
-
-ERROR_SC_1:
-       i2c_unregister_device(data->lm75[0]);
-ERROR_SC_0:
-       return err;
 }
 
 /* Return 0 if detection is successful, -ENODEV otherwise */
@@ -1945,9 +1934,6 @@ static int w83793_probe(struct i2c_client *client,
 
        for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
                device_remove_file(dev, &w83793_temp[i].dev_attr);
-
-       i2c_unregister_device(data->lm75[0]);
-       i2c_unregister_device(data->lm75[1]);
 free_mem:
        kfree(data);
 exit:
-- 
2.20.1