diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index f05bcce60600..e8755d126244 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -31,7 +31,6 @@
 struct keyspan_pda_private {
 	int			tx_room;
 	struct work_struct	unthrottle_work;
-	struct usb_serial	*serial;
 	struct usb_serial_port	*port;
 };