On Wednesday, July 25, 2012, Zhang Rui wrote: > This is because general active cooling devices, like fans, > may have multiple speeds, which can be mapped to different cooling states. > > Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx> Reviewed-by: Rafael J. Wysocki <rjw@xxxxxxx> > --- > drivers/thermal/thermal_sys.c | 12 ++++++++++-- > 1 file changed, 10 insertions(+), 2 deletions(-) > > diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c > index 2d7a9fe..05f42cd 100644 > --- a/drivers/thermal/thermal_sys.c > +++ b/drivers/thermal/thermal_sys.c > @@ -1059,6 +1059,7 @@ void thermal_zone_device_update(struct thermal_zone_device *tz) > enum thermal_trip_type trip_type; > struct thermal_cooling_device_instance *instance; > struct thermal_cooling_device *cdev; > + unsigned long cur_state, max_state; > > mutex_lock(&tz->lock); > > @@ -1098,10 +1099,17 @@ void thermal_zone_device_update(struct thermal_zone_device *tz) > > cdev = instance->cdev; > > + cdev->ops->get_cur_state(cdev, &cur_state); > + cdev->ops->get_max_state(cdev, &max_state); > + > if (temp >= trip_temp) > - cdev->ops->set_cur_state(cdev, 1); > + cur_state = cur_state < max_state ? > + (cur_state + 1) : max_state; > else > - cdev->ops->set_cur_state(cdev, 0); > + cur_state = cur_state > 0 ? > + (cur_state - 1) : 0; > + > + cdev->ops->set_cur_state(cdev, cur_state); > } > break; > case THERMAL_TRIP_PASSIVE: > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
