diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index b7fc14aafc74..8a3f7c3fcfec 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -1215,7 +1215,6 @@ static int btmtk_usb_isointf_init(struct hci_dev *hdev)
 	struct sk_buff *skb;
 	int err;
 
-	init_usb_anchor(&btmtk_data->isopkt_anchor);
 	spin_lock_init(&btmtk_data->isorxlock);
 
 	__set_mtk_intr_interface(hdev);
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 9970470c9d15..514d593923ad 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2637,6 +2637,7 @@ static void btusb_mtk_claim_iso_intf(struct btusb_data *data)
 	}
 
 	set_bit(BTMTK_ISOPKT_OVER_INTR, &btmtk_data->flags);
+	init_usb_anchor(&btmtk_data->isopkt_anchor);
 }
 
 static void btusb_mtk_release_iso_intf(struct hci_dev *hdev)