+++ src/linux/drivers/usb/core/message.c
@@ -869,7 +869,7 @@
 	}
 }
 
-static int usb_string_sub(struct usb_device *dev, unsigned int langid,
+int usb_string_sub(struct usb_device *dev, unsigned int langid,
 			  unsigned int index, unsigned char *buf)
 {
 	int rc;
@@ -906,7 +906,7 @@
 	return rc;
 }
 
-static int usb_get_langid(struct usb_device *dev, unsigned char *tbuf)
+int usb_get_langid(struct usb_device *dev, unsigned char *tbuf)
 {
 	int err;