diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index 49ad2ba..207caab 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -478,7 +478,7 @@
 	return value;
 }
 
-static int keyspan_pda_tiocmset(struct tty_struct *tty, struct file *file,
+static int keyspan_pda_tiocmset(struct tty_struct *tty,
 				unsigned int set, unsigned int clear)
 {
 	struct usb_serial_port *port = tty->driver_data;