Re: [PATCH v1 10/15] hwmon: (w83791d) Remove duplicate NULL check

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On Tue, 31 Oct 2017 16:21:44 +0200, Andy Shevchenko wrote:
> Since i2c_unregister_device() became NULL-aware we may remove duplicate
> NULL check.
> 
> Cc: Marc Hulsman <m.hulsman@xxxxxxxxxx>
> Cc: Jean Delvare <jdelvare@xxxxxxxx>
> Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
> Cc: linux-hwmon@xxxxxxxxxxxxxxx
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> ---
>  drivers/hwmon/w83791d.c | 15 +++++----------
>  1 file changed, 5 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/hwmon/w83791d.c b/drivers/hwmon/w83791d.c
> index 8af6081b4ab4..28fa3bd2c096 100644
> --- a/drivers/hwmon/w83791d.c
> +++ b/drivers/hwmon/w83791d.c
> @@ -1316,8 +1316,7 @@ static int w83791d_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;
>  }
> @@ -1434,10 +1433,8 @@ static int w83791d_probe(struct i2c_client *client,
>  error4:
>  	sysfs_remove_group(&client->dev.kobj, &w83791d_group);
>  error3:
> -	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]);
>  	return err;
>  }
>  
> @@ -1448,10 +1445,8 @@ static int w83791d_remove(struct i2c_client *client)
>  	hwmon_device_unregister(data->hwmon_dev);
>  	sysfs_remove_group(&client->dev.kobj, &w83791d_group);
>  
> -	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]);
>  
>  	return 0;
>  }

Reviewed-by: Jean Delvare <jdelvare@xxxxxxx>


-- 
Jean Delvare
SUSE L3 Support



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