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-rw-r--r--drivers/thermal/thermal_sys.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 6f8d8f97..310e40a 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -225,6 +225,12 @@ passive_store(struct device *dev, struct device_attribute *attr,
if (!sscanf(buf, "%d\n", &state))
return -EINVAL;
+ /* sanity check: values below 1000 millicelcius don't make sense
+ * and can cause the system to go into a thermal heart attack
+ */
+ if (state && state < 1000)
+ return -EINVAL;
+
if (state && !tz->forced_passive) {
mutex_lock(&thermal_list_lock);
list_for_each_entry(cdev, &thermal_cdev_list, node) {
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