Commit 897e7210 authored by Sascha Hauer's avatar Sascha Hauer Committed by Zhang Rui

thermal: bang-bang governor: act on lower trip boundary

With interrupt driven thermal zones we pass the lower and upper
temperature on which shall be acted, so in the governor we have to act on
the exact lower temperature to be consistent. Otherwise an interrupt maybe
generated on the exact lower temperature, but the bang bang governor does
not react since The polling driven zones have to be one step cooler before
the governor reacts.
Signed-off-by: default avatarSascha Hauer <>
Signed-off-by: default avatarCaesar Wang <>
Cc: Zhang Rui <>
Cc: Eduardo Valentin <>
Acked-by: default avatarPeter Feuerer <>
Signed-off-by: default avatarEduardo Valentin <>
Signed-off-by: default avatarZhang Rui <>
parent e78eaf45
......@@ -65,7 +65,7 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
if (instance->target == 0 && tz->temperature >= trip_temp)
instance->target = 1;
else if (instance->target == 1 &&
tz->temperature < trip_temp - trip_hyst)
tz->temperature <= trip_temp - trip_hyst)
instance->target = 0;
dev_dbg(&instance->cdev->device, "target=%d\n",
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