Re: [PATCH 1/2] thermal: rcar_thermal: Remove temperature bound

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On 14/01/2020 23:29, Niklas Söderlund wrote:
> The hardware manual states that the operation of the sensor is not
> guaranteed outside the range of -40°C to 125°C, not that the readings
> are invalid. Remove the bound check and try to deliver temperature
> readings even if we are outside the guaranteed operation range.

And what if the sensor is returning crap in this out-of-range operation?



> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> ---
>  drivers/thermal/rcar_thermal.c | 7 -------
>  1 file changed, 7 deletions(-)
> 
> diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
> index d0873de718da9218..2ae60b27a0183db1 100644
> --- a/drivers/thermal/rcar_thermal.c
> +++ b/drivers/thermal/rcar_thermal.c
> @@ -275,13 +275,6 @@ static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv,
>  		tmp = MCELSIUS((priv->ctemp * 5) - 60);
>  	mutex_unlock(&priv->lock);
>  
> -	if ((tmp < MCELSIUS(-45)) || (tmp > MCELSIUS(125))) {
> -		struct device *dev = rcar_priv_to_dev(priv);
> -
> -		dev_err(dev, "it couldn't measure temperature correctly\n");
> -		return -EIO;
> -	}
> -
>  	*temp = tmp;
>  
>  	return 0;
> 


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