thermal: of-thermal: Fix setting of set_emul_temp hook

Currently thermal zone set_emul_temp is set unconditionally
with of_thermal_set_emul_temp function. Set this only if the
set_emul_temp hook is provided for thermal_zone_of_device_ops.

This fixes emul_temp failures on platforms for which set_emul_temp
hook is not populated.

Fixes: "184a4bf623f (thermal: of: Extend current
	of-thermal.c code to allow setting emulated temp)"
Suggested-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Conflicts:
	drivers/thermal/of-thermal.c
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 20822ab..972b0cf 100644 (file)
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -192,9 +192,6 @@ static int of_thermal_set_emul_temp(struct thermal_zone_device *tz,
 {
        struct __thermal_zone *data = tz->devdata;
 
-       if (!data->ops || !data->ops->set_emul_temp)
-               return -EINVAL;
-
        return data->ops->set_emul_temp(data->sensor_data, temp);
 }
 
@@ -432,7 +429,9 @@ thermal_zone_of_add_sensor(struct device_node *zone,
        if (ops->set_trips)
                tzd->ops->set_trips = of_thermal_set_trips;
 
-       tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
+       if (ops->set_emul_temp)
+               tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
+
        mutex_unlock(&tzd->lock);
 
        return tzd;