diff --git a/[refs] b/[refs]
index fa9152562408..36fde5746081 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2807190b69f60ce4a04a9c7c523c9bce8cb62b2e
+refs/heads/master: e7328ae1848966181a7ac47e8ae6cddbd2cf55f3
diff --git a/trunk/drivers/tty/serial/8250.c b/trunk/drivers/tty/serial/8250.c
index b40f7b90c81d..f11df87fa249 100644
--- a/trunk/drivers/tty/serial/8250.c
+++ b/trunk/drivers/tty/serial/8250.c
@@ -81,7 +81,7 @@ static unsigned int skip_txen_test; /* force skip of txen test at init time */
 #define DEBUG_INTR(fmt...)	do { } while (0)
 #endif
 
-#define PASS_LIMIT	256
+#define PASS_LIMIT	512
 
 #define BOTH_EMPTY 	(UART_LSR_TEMT | UART_LSR_THRE)