diff mbox series

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

Message ID 20190903181256.13450-4-wsa+renesas@sang-engineering.com (mailing list archive)
State Accepted
Headers show
Series hwmon: convert remaining drivers to i2c_new_dummy_device() | expand

Commit Message

Wolfram Sang Sept. 3, 2019, 6:12 p.m. UTC 
And simplify the error handling.

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

Comments

Guenter Roeck Sept. 3, 2019, 7:46 p.m. UTC | #1 
On Tue, Sep 03, 2019 at 08:12:56PM +0200, Wolfram Sang wrote:
> And simplify the error handling.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Applied to hwmon-next.

Thanks,
Guenter

> ---
>  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
>
diff mbox series

Patch

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: