Re: [PATCH] sensors: Fix power interval output

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On Fri, 2012-01-13 at 11:32 -0500, Guenter Roeck wrote:
> Power interval is measured in seconds, not Watt.
> 
> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> Untested. Maybe a bit kludgy but should work.
> 
>  prog/sensors/chips.c |   22 ++++++++++++++++++----
>  1 files changed, 18 insertions(+), 4 deletions(-)
> 
> diff --git a/prog/sensors/chips.c b/prog/sensors/chips.c
> index 677a617..fde33f6 100644
> --- a/prog/sensors/chips.c
> +++ b/prog/sensors/chips.c
> @@ -574,11 +574,25 @@ static void print_chip_power(const sensors_chip_name *name,
>  	} else
>  		printf("     N/A  ");
>  
> -	for (i = 0; i < sensor_count; i++)
> -		scale_value(&sensors[i].value, &sensors[i].unit);
> -
> +	for (i = 0; i < sensor_count; i++) {
> +	    	/*
> +		 * Unit is W and needs to be scaled for all attributes except
> +		 * interval, which does not need to be scaled and is reported in
> +		 * seconds.
> +		 */
> +	    	if (strcmp(sensors[i].name, "interval")) {
> +		    	char *tmpstr;
> +			
> +			tmpstr = alloca(4);
> +			scale_value(&sensors[i].value, &unit);
> +			snprintf(tmpstr, 4, "%sW", unit);
> +			sensors[i].unit = tmpstr;
> +		} else {
> +			sensors[i].unit = "s";
> +		}
> +	}
>  	print_limits(sensors, sensor_count, alarms, alarm_count,
> -		     label_size, "%s = %6.2f %sW");
> +		     label_size, "%s = %6.2f %s");
>  
>  	printf("\n");
>  }

Side note: Another more generic option would have been to add a "unit"
field to struct sensor_subfeature_list, but that seemed to be (much)
more expensive.

Guenter



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