diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 5627993..ee0dc9a 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -1644,7 +1644,7 @@
 	}
 }
 
-static int mos7840_tiocmget(struct tty_struct *tty, struct file *file)
+static int mos7840_tiocmget(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
 	struct moschip_port *mos7840_port;