We recently changed this from unsigned long to int so it introduced an
underflow bug.
Fixes: 17e8351a7739 ('thermal: consistently use int for temperatures')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index 4bec1d3..7a06465 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -288,7 +288,7 @@ static int imx_set_trip_temp(struct thermal_zone_device *tz, int trip,
if (trip == IMX_TRIP_CRITICAL)
return -EPERM;
- if (temp > IMX_TEMP_PASSIVE)
+ if (temp < 0 || temp > IMX_TEMP_PASSIVE)
return -EINVAL;
data->temp_passive = temp;
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