diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 7a2172b5e93c..9d4c84f7485f 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -199,6 +199,7 @@ static inline void serial_omap_clear_fifos(struct uart_omap_port *up)
 	serial_out(up, UART_FCR, 0);
 }
 
+#ifdef CONFIG_PM
 static int serial_omap_get_context_loss_count(struct uart_omap_port *up)
 {
 	struct omap_uart_port_info *pdata = dev_get_platdata(up->dev);
@@ -219,6 +220,7 @@ static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable)
 
 	pdata->enable_wakeup(up->dev, enable);
 }
+#endif /* CONFIG_PM */
 
 /*
  * Calculate the absolute difference between the desired and actual baud