diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 5380407bb0bef0ec52c6d180a5bf0a276351e4de..95d34d7565c9aabe5f734c21070a505d77f10043 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -958,7 +958,7 @@ sunsu_type(struct uart_port *port)
 	return uart_config[type].name;
 }
 
-static struct uart_ops sunsu_pops = {
+static const struct uart_ops sunsu_pops = {
 	.tx_empty	= sunsu_tx_empty,
 	.set_mctrl	= sunsu_set_mctrl,
 	.get_mctrl	= sunsu_get_mctrl,