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authorSascha Hauer <s.hauer@pengutronix.de>2016-06-22 11:42:04 +0300
committerZhang Rui <rui.zhang@intel.com>2016-09-27 09:02:16 +0300
commit897e721037753ca5b843c309d08dfb50387cbe84 (patch)
tree58bd57e6d855d62c427e8ff52288ab89b2c0fbda /drivers/thermal
parente78eaf45993a51e5d7120de48aa01f059ffe8d37 (diff)
downloadlinux-897e721037753ca5b843c309d08dfb50387cbe84.tar.xz
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.c2
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",