thermal: validate input parameters
Added sanity check to make sure that thermal zone
and cooling device exists.
Signed-off-by: Thomas Sujith <sujith.thomas@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/thermal/thermal.c b/drivers/thermal/thermal.c
index e782b3e..5f1d318 100644
--- a/drivers/thermal/thermal.c
+++ b/drivers/thermal/thermal.c
@@ -306,12 +306,23 @@
{
struct thermal_cooling_device_instance *dev;
struct thermal_cooling_device_instance *pos;
+ struct thermal_zone_device *pos1;
+ struct thermal_cooling_device *pos2;
int result;
if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
return -EINVAL;
- if (!tz || !cdev)
+ list_for_each_entry(pos1, &thermal_tz_list, node) {
+ if (pos1 == tz)
+ break;
+ }
+ list_for_each_entry(pos2, &thermal_cdev_list, node) {
+ if (pos2 == cdev)
+ break;
+ }
+
+ if (tz != pos1 || cdev != pos2)
return -EINVAL;
dev =