From ee948e379ede642b7499e78e8e30c10f90c0a1c5 Mon Sep 17 00:00:00 2001
From: Sonic Zhang <sonic.zhang@analog.com>
Date: Mon, 5 Dec 2011 18:13:10 +0800
Subject: [PATCH] serial: bfin-uart: Add tty ASYNC_CTS_FLOW flag to do CTS flow
 control.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/tty/serial/bfin_uart.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
index ff5a1dc43e08..f24f8a2073d9 100644
--- a/drivers/tty/serial/bfin_uart.c
+++ b/drivers/tty/serial/bfin_uart.c
@@ -1377,8 +1377,10 @@ static int bfin_serial_probe(struct platform_device *pdev)
 		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
 		if (res == NULL)
 			uart->cts_pin = -1;
-		else
+		else {
 			uart->cts_pin = res->start;
+			uart->port.flags |= ASYNC_CTS_FLOW;
+		}
 
 		res = platform_get_resource(pdev, IORESOURCE_IO, 1);
 		if (res == NULL)