diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 204bb68ce3ca91a1d9338658154bd5465109e4d3..e1179e74a2b89d892f4c8e0edceb3378c6755e5a 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -3301,9 +3301,6 @@ static int sci_probe_single(struct platform_device *dev,
 		sciport->port.flags |= UPF_HARD_FLOW;
 	}
 
-	if (sci_uart_driver.cons->index == sciport->port.line)
-		spin_lock_init(&sciport->port.lock);
-
 	ret = uart_add_one_port(&sci_uart_driver, &sciport->port);
 	if (ret) {
 		sci_cleanup_single(sciport);