diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2016-06-22 10:42:04 +0200 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2016-09-27 08:02:16 +0200 |
| commit | 897e721037753ca5b843c309d08dfb50387cbe84 (patch) | |
| tree | 58bd57e6d855d62c427e8ff52288ab89b2c0fbda /drivers/thermal | |
| parent | thermal: streamline get_trend callbacks (diff) | |
| download | linux-897e721037753ca5b843c309d08dfb50387cbe84.tar.xz linux-897e721037753ca5b843c309d08dfb50387cbe84.zip | |
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: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: linux-pm@vger.kernel.org
Acked-by: Peter Feuerer <peter@piie.net>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/gov_bang_bang.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/thermal/gov_bang_bang.c b/drivers/thermal/gov_bang_bang.c index bb118a152cbb..fc5e5057f0de 100644 --- a/drivers/thermal/gov_bang_bang.c +++ b/drivers/thermal/gov_bang_bang.c @@ -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", |