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thermal: rcar: rcar_thermal_get_temp() return error if strange temp

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Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Kuninori Morimoto 2015-12-15 01:18:13 +00:00 committed by Eduardo Valentin
parent ffbcdf8a75
commit 5440c40b90
1 changed files with 11 additions and 1 deletions
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12
drivers/thermal/rcar_thermal.c
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@ -203,6 +203,7 @@ err_out_unlock:
static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
{
struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone);
int tmp;
int ret;
ret = rcar_thermal_update_temp(priv);
@ -210,9 +211,18 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
return ret;
mutex_lock(&priv->lock);
*temp = MCELSIUS((priv->ctemp * 5) - 65);
tmp = MCELSIUS((priv->ctemp * 5) - 65);
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;
}