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>
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 45f6136..b38e954 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -2053,7 +2053,7 @@
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) {