diff --git a/[refs] b/[refs]
index b04e0c6fc03e..d79b58cc7593 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 26bbb3ff1ff6163d6a233055766e26af8054a212
+refs/heads/master: 977757311e50dc5d832c9fef34e7555411f7ccd8
diff --git a/trunk/drivers/serial/imx.c b/trunk/drivers/serial/imx.c
index 6b8f12f4a705..49f2e12ba58d 100644
--- a/trunk/drivers/serial/imx.c
+++ b/trunk/drivers/serial/imx.c
@@ -308,6 +308,9 @@ static inline void imx_transmit_buffer(struct imx_port *sport)
 			break;
 	}
 
+	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+		uart_write_wakeup(&sport->port);
+
 	if (uart_circ_empty(xmit))
 		imx_stop_tx(&sport->port);
 }