diff mbox

[v1,12/15] hwmon: (w83793) Remove duplicate NULL check

Message ID 20171031142149.32512-12-andriy.shevchenko@linux.intel.com (mailing list archive)
State Accepted
Headers show

Commit Message

Andy Shevchenko Oct. 31, 2017, 2:21 p.m. UTC
Since i2c_unregister_device() became NULL-aware we may remove duplicate
NULL check.

Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-hwmon@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/hwmon/w83793.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

Comments

Jean Delvare Oct. 31, 2017, 7:43 p.m. UTC | #1
On Tue, 31 Oct 2017 16:21:46 +0200, Andy Shevchenko wrote:
> Since i2c_unregister_device() became NULL-aware we may remove duplicate
> NULL check.
> 
> Cc: Rudolf Marek <r.marek@assembler.cz>
> Cc: Jean Delvare <jdelvare@suse.com>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: linux-hwmon@vger.kernel.org
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
>  drivers/hwmon/w83793.c | 15 +++++----------
>  1 file changed, 5 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c
> index 5ba9d9f1daa1..0af0f6283b35 100644
> --- a/drivers/hwmon/w83793.c
> +++ b/drivers/hwmon/w83793.c
> @@ -1564,10 +1564,8 @@ 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);
>  
> -	if (data->lm75[0] != NULL)
> -		i2c_unregister_device(data->lm75[0]);
> -	if (data->lm75[1] != NULL)
> -		i2c_unregister_device(data->lm75[1]);
> +	i2c_unregister_device(data->lm75[0]);
> +	i2c_unregister_device(data->lm75[1]);
>  
>  	/* Decrease data reference counter */
>  	mutex_lock(&watchdog_data_mutex);
> @@ -1625,8 +1623,7 @@ w83793_detect_subclients(struct i2c_client *client)
>  	/* Undo inits in case of errors */
>  
>  ERROR_SC_1:
> -	if (data->lm75[0] != NULL)
> -		i2c_unregister_device(data->lm75[0]);
> +	i2c_unregister_device(data->lm75[0]);
>  ERROR_SC_0:
>  	return err;
>  }
> @@ -1962,10 +1959,8 @@ 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);
>  
> -	if (data->lm75[0] != NULL)
> -		i2c_unregister_device(data->lm75[0]);
> -	if (data->lm75[1] != NULL)
> -		i2c_unregister_device(data->lm75[1]);
> +	i2c_unregister_device(data->lm75[0]);
> +	i2c_unregister_device(data->lm75[1]);
>  free_mem:
>  	kfree(data);
>  exit:

Reviewed-by: Jean Delvare <jdelvare@suse.de>
diff mbox

Patch

diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c
index 5ba9d9f1daa1..0af0f6283b35 100644
--- a/drivers/hwmon/w83793.c
+++ b/drivers/hwmon/w83793.c
@@ -1564,10 +1564,8 @@  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);
 
-	if (data->lm75[0] != NULL)
-		i2c_unregister_device(data->lm75[0]);
-	if (data->lm75[1] != NULL)
-		i2c_unregister_device(data->lm75[1]);
+	i2c_unregister_device(data->lm75[0]);
+	i2c_unregister_device(data->lm75[1]);
 
 	/* Decrease data reference counter */
 	mutex_lock(&watchdog_data_mutex);
@@ -1625,8 +1623,7 @@  w83793_detect_subclients(struct i2c_client *client)
 	/* Undo inits in case of errors */
 
 ERROR_SC_1:
-	if (data->lm75[0] != NULL)
-		i2c_unregister_device(data->lm75[0]);
+	i2c_unregister_device(data->lm75[0]);
 ERROR_SC_0:
 	return err;
 }
@@ -1962,10 +1959,8 @@  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);
 
-	if (data->lm75[0] != NULL)
-		i2c_unregister_device(data->lm75[0]);
-	if (data->lm75[1] != NULL)
-		i2c_unregister_device(data->lm75[1]);
+	i2c_unregister_device(data->lm75[0]);
+	i2c_unregister_device(data->lm75[1]);
 free_mem:
 	kfree(data);
 exit: