diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 176f125..789a5af 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -517,6 +517,7 @@
 	port->throttle_req = 1;
 	spin_unlock_irqrestore(&port->lock, flags);
 }
+EXPORT_SYMBOL_GPL(usb_serial_generic_throttle);
 
 void usb_serial_generic_unthrottle(struct tty_struct *tty)
 {
@@ -534,6 +535,7 @@
 	if (was_throttled)
 		usb_serial_generic_submit_read_urb(port, GFP_KERNEL);
 }
+EXPORT_SYMBOL_GPL(usb_serial_generic_unthrottle);
 
 #ifdef CONFIG_MAGIC_SYSRQ
 int usb_serial_handle_sysrq_char(struct tty_struct *tty,