@@ -53,6 +53,7 @@ extern unsigned long pm_runtime_autosusp
 extern void pm_runtime_update_max_time_suspended(struct device *dev,
 						 s64 delta_ns);
 extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable);
+extern bool pm_runtime_enabled_and_suspended(struct device *dev);
 
 static inline bool pm_children_suspended(struct device *dev)
 {

@@ -161,6 +162,7 @@ static inline unsigned long pm_runtime_a
 				struct device *dev) { return 0; }
 static inline void pm_runtime_set_memalloc_noio(struct device *dev,
 						bool enable){}
+static inline bool pm_runtime_enabled_and_suspended(struct device *dev) { return false; }
 
 #endif /* !CONFIG_PM_RUNTIME */
 

@@ -1194,6 +1194,34 @@ void pm_runtime_enable(struct device *de
 EXPORT_SYMBOL_GPL(pm_runtime_enable);
 
 /**
+ * pm_runtime_enabled_and_suspended - Check runtime PM status of a device.
+ * @dev: Device to handle.
+ *
+ * This routine is to be executed during system suspend only, after
+ * device_prepare() has been executed for @dev.
+ *
+ * Return false if runtime PM is disabled for the device.  Otherwise, wait
+ * for pending transitions to complete and check the runtime PM status of the
+ * device after that.  Return true if it is RPM_SUSPENDED.
+ */
+bool pm_runtime_enabled_and_suspended(struct device *dev)
+{
+	unsigned long flags;
+	bool ret;
+
+	spin_lock_irqsave(&dev->power.lock, flags);
+	if (dev->power.disable_depth) {
+		ret = false;
+	} else {
+		__pm_runtime_barrier(dev);
+		ret = pm_runtime_status_suspended(dev);
+	}
+	spin_unlock_irqrestore(&dev->power.lock, flags);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(pm_runtime_enabled_and_suspended);
+
+/**
  * pm_runtime_forbid - Block runtime PM of a device.
  * @dev: Device to handle.
  *