diff --git a/include/linux/pm.h b/include/linux/pm.h
index e4982ac..4a09c76 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -474,6 +474,7 @@ struct dev_pm_info {
 	bool			is_prepared:1;	/* Owned by the PM core */
 	bool			is_suspended:1;	/* Ditto */
 	bool			ignore_children:1;
+	bool			can_power_off:1;
 	spinlock_t		lock;
 #ifdef CONFIG_PM_SLEEP
 	struct list_head	entry;
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 609daae..81f3f13 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -100,6 +100,33 @@ static inline void pm_runtime_mark_last_busy(struct device *dev)
 	ACCESS_ONCE(dev->power.last_busy) = jiffies;
 }
 
+static inline bool pm_runtime_can_power_off(struct device *dev)
+{
+	return !!dev->power.can_power_off;
+}
+
+static inline int check_fn(struct device *dev, void *data)
+{
+	return pm_runtime_can_power_off(dev) ? 0 : -1;
+}
+
+static inline bool pm_runtime_allow_power_off(struct device *dev)
+{
+	return device_for_each_child(dev, NULL, check_fn) ? false : true;
+}
+
+static inline void pm_runtime_enable_power_off(struct device *dev)
+{
+	if (!dev->power.is_prepared)
+		dev->power.can_power_off = pm_runtime_allow_power_off(dev);
+}
+
+static inline void pm_runtime_disable_power_off(struct device *dev)
+{
+	if (!dev->power.is_prepared)
+		dev->power.can_power_off = false;
+}
+
 #else /* !CONFIG_PM_RUNTIME */
 
 static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
@@ -149,6 +176,9 @@ static inline void pm_runtime_set_autosuspend_delay(struct device *dev,
 						int delay) {}
 static inline unsigned long pm_runtime_autosuspend_expiration(
 				struct device *dev) { return 0; }
+static inline bool pm_runtime_can_power_off(struct device *dev) { return false; }
+static inline void pm_runtime_enable_power_off(struct device *dev) {}
+static inline void pm_runtime_disable_power_off(struct device *dev) {}
 
 static inline void pm_runtime_update_max_time_suspended(struct device *dev,
 							s64 delta_ns) {}