diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 5cf069756497..9fa42acca7c0 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1580,7 +1580,7 @@ static void uart_dtr_rts(struct tty_port *port, int onoff)
  */
 static int uart_open(struct tty_struct *tty, struct file *filp)
 {
-	struct uart_driver *drv = (struct uart_driver *)tty->driver->driver_state;
+	struct uart_driver *drv = tty->driver->driver_state;
 	int retval, line = tty->index;
 	struct uart_state *state = drv->state + line;
 	struct tty_port *port = &state->port;