diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index b9d27c8fe57e..8cbb2ca8340f 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -925,6 +925,22 @@ int extcon_register_notifier(struct extcon_dev *edev, unsigned int id,
 }
 EXPORT_SYMBOL_GPL(extcon_register_notifier);
 
+int extcon_register_blocking_notifier(struct extcon_dev *edev, unsigned int id,
+			struct notifier_block *nb)
+{
+	int idx = -EINVAL;
+
+	if (!edev || !nb)
+		return -EINVAL;
+
+	idx = find_cable_index_by_id(edev, id);
+	if (idx < 0)
+		return idx;
+
+	return blocking_notifier_chain_register(&edev->bnh[idx], nb);
+}
+EXPORT_SYMBOL(extcon_register_blocking_notifier);
+
 /**
  * extcon_unregister_notifier() - Unregister a notifier block from the extcon.
  * @edev:	the extcon device
diff --git a/drivers/extcon/extcon.h b/drivers/extcon/extcon.h
index 93b5e0306966..5b200dd37e43 100644
--- a/drivers/extcon/extcon.h
+++ b/drivers/extcon/extcon.h
@@ -48,6 +48,7 @@ struct extcon_dev {
 	struct device dev;
 	struct raw_notifier_head nh_all;
 	struct raw_notifier_head *nh;
+	struct blocking_notifier_head *bnh;
 	struct list_head entry;
 	int max_supported;
 	spinlock_t lock;	/* could be called by irq handler */
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 7f033b1ea568..d91dd704a729 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -208,6 +208,8 @@ extern int extcon_register_notifier(struct extcon_dev *edev, unsigned int id,
 				struct notifier_block *nb);
 extern int extcon_unregister_notifier(struct extcon_dev *edev, unsigned int id,
 				struct notifier_block *nb);
+extern int extcon_register_blocking_notifier(struct extcon_dev *edev,
+		unsigned int id, struct notifier_block *nb);
 extern int devm_extcon_register_notifier(struct device *dev,
 				struct extcon_dev *edev, unsigned int id,
 				struct notifier_block *nb);
@@ -268,6 +270,13 @@ static inline int extcon_unregister_notifier(struct extcon_dev *edev,
 	return 0;
 }
 
+static inline int extcon_register_blocking_notifier(struct extcon_dev *edev,
+					unsigned int id,
+					struct notifier_block *nb)
+{
+	return 0;
+}
+
 static inline int devm_extcon_register_notifier(struct device *dev,
 				struct extcon_dev *edev, unsigned int id,
 				struct notifier_block *nb)