On Mon, Apr 25, 2016 at 11:02:47AM +0800, Caesar Wang wrote: > From: Sascha Hauer <s.hauer at pengutronix.de> > > 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. What is the expected impact on polling driven zones that use bang bang after this change? > > Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de> > Signed-off-by: Caesar Wang <wxt at rock-chips.com> > Cc: Zhang Rui <rui.zhang at intel.com> > Cc: Eduardo Valentin <edubezval at gmail.com> > Cc: linux-pm at vger.kernel.org > > --- > > drivers/thermal/gov_bang_bang.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/thermal/gov_bang_bang.c b/drivers/thermal/gov_bang_bang.c > index 70836c5..9d1dfea 100644 > --- a/drivers/thermal/gov_bang_bang.c > +++ b/drivers/thermal/gov_bang_bang.c > @@ -59,7 +59,7 @@ 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", > -- > 1.9.1 >
