diff --git a/drivers/serial/ip22zilog.c b/drivers/serial/ip22zilog.c
index 2e847de..ebff4a1 100644
--- a/drivers/serial/ip22zilog.c
+++ b/drivers/serial/ip22zilog.c
@@ -354,7 +354,7 @@
 			uart_handle_cts_change(&up->port,
 					       (status & CTS));
 
-		wake_up_interruptible(&up->port.state->delta_msr_wait);
+		wake_up_interruptible(&up->port.state->port.delta_msr_wait);
 	}
 
 	up->prev_status = status;