diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 44b8412..97e3d50 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -2648,7 +2648,7 @@
 	   to do here */
 }
 
-static int gsmtty_tiocmget(struct tty_struct *tty, struct file *filp)
+static int gsmtty_tiocmget(struct tty_struct *tty)
 {
 	struct gsm_dlci *dlci = tty->driver_data;
 	return dlci->modem_rx;