Re: [PATCH v3 2/2] hwmon:max6697: fixing the type issue where the comparison is always true

[Guenter Roeck]

On 7/6/20 5:22 PM, Chu Lin wrote:
>   - Use reverse christmas tree order convension
>   - fix the type issue where comparision is always true
>   - Change the line limit to 100 char instead of 80 char
> 
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Signed-off-by: Chu Lin <linchuyuan@xxxxxxxxxx>

Unless I am missing something, this patch fixes the first patch
of the series. This is not reviewable. Please combine with the
first patch.

Thanks,
Guenter

> ---
>  drivers/hwmon/max6697.c | 26 +++++++++-----------------
>  1 file changed, 9 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/hwmon/max6697.c b/drivers/hwmon/max6697.c
> index 8c814c544116..6b213e146fbe 100644
> --- a/drivers/hwmon/max6697.c
> +++ b/drivers/hwmon/max6697.c
> @@ -329,15 +329,13 @@ static ssize_t offset_store(struct device *dev,
>  			    struct device_attribute *devattr, const char *buf,
>  			    size_t count)
>  {
> -	long temp;
> -	u8 val, select;
> -	int ret, index;
> +	int val, ret, index, select;
>  	struct max6697_data *data;
> +	long temp;
>  
>  	index = to_sensor_dev_attr(devattr)->index;
>  	data = dev_get_drvdata(dev);
> -	select = i2c_smbus_read_byte_data(data->client,
> -					  MAX6581_REG_OFFSET_SELECT);
> +	select = i2c_smbus_read_byte_data(data->client, MAX6581_REG_OFFSET_SELECT);
>  	if (select < 0)
>  		return select;
>  	ret = kstrtol(buf, 10, &temp);
> @@ -345,22 +343,18 @@ static ssize_t offset_store(struct device *dev,
>  		return ret;
>  	/* disable the offset for channel */
>  	if (temp == 0) {
> -		ret = i2c_smbus_write_byte_data(data->client,
> -						MAX6581_REG_OFFSET_SELECT,
> +		ret = i2c_smbus_write_byte_data(data->client, MAX6581_REG_OFFSET_SELECT,
>  						select & ~(1 << (index - 1)));
>  		return ret < 0 ? ret : count;
>  	}
>  	temp = clamp_val(temp, MAX6581_OFFSET_MIN, MAX6581_OFFSET_MAX);
>  	val = DIV_ROUND_CLOSEST(temp, 250);
>  	mutex_lock(&data->update_lock);
> -	ret = i2c_smbus_write_byte_data(data->client,
> -					MAX6581_REG_OFFSET_SELECT,
> +	ret = i2c_smbus_write_byte_data(data->client, MAX6581_REG_OFFSET_SELECT,
>  					select | (1 << (index - 1)));
>  	if (ret < 0)
>  		return ret;
> -	ret = i2c_smbus_write_byte_data(data->client,
> -					MAX6581_REG_OFFSET,
> -					val);
> +	ret = i2c_smbus_write_byte_data(data->client, MAX6581_REG_OFFSET, val);
>  	mutex_unlock(&data->update_lock);
>  	return ret < 0 ? ret : count;
>  }
> @@ -368,18 +362,16 @@ static ssize_t offset_store(struct device *dev,
>  static ssize_t offset_show(struct device *dev, struct device_attribute *devattr,
>  			   char *buf)
>  {
> -	int select, ret, index;
>  	struct max6697_data *data;
> +	int select, ret, index;
>  
>  	index = to_sensor_dev_attr(devattr)->index;
>  	data = dev_get_drvdata(dev);
> -	select = i2c_smbus_read_byte_data(data->client,
> -					  MAX6581_REG_OFFSET_SELECT);
> +	select = i2c_smbus_read_byte_data(data->client, MAX6581_REG_OFFSET_SELECT);
>  	if (select < 0)
>  		return select;
>  	if (select & (1 << (index - 1))) {
> -		ret = i2c_smbus_read_byte_data(data->client,
> -					       MAX6581_REG_OFFSET);
> +		ret = i2c_smbus_read_byte_data(data->client, MAX6581_REG_OFFSET);
>  		if (ret < 0)
>  			return ret;
>  	} else {
>