serial: add a new helper function

In most of the time, the driver needs to check if the cts flow control
is enabled. But now, the driver checks the ASYNC_CTS_FLOW flag manually,
which is not a grace way. So add a new wraper function to make the code
tidy and clean.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 45f6136f4e51..b38e954eedd3 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -2053,7 +2053,7 @@ static void cts_change(struct slgt_info *info, unsigned short status)
         wake_up_interruptible(&info->event_wait_q);
         info->pending_bh |= BH_STATUS;
 
-        if (info->port.flags & ASYNC_CTS_FLOW) {
+        if (tty_port_cts_enabled(&info->port)) {
                 if (info->port.tty) {
                         if (info->port.tty->hw_stopped) {
                                 if (info->signals & SerialSignal_CTS) {