serial: fix dtr/rts set and clear

The code cleared the bit with TIOCMBI_C on enable and set the bit with
TIOCMBI_S on disable (last letters highlighted for clarity). Fix the
code to use the correct command.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Acked-by: Michael Grzeschik <mgr@pengutronix.de>
Fixes: 5b32368e4b9d ("commands: add serial dtr/rts toggle")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/serial.c b/serial.c
index f432309..00b817d 100644
--- a/serial.c
+++ b/serial.c
@@ -63,9 +63,9 @@ static int serial_set_handshake_line(struct ios_ops *ios, int pin, int enable)
 	}
 
 	if (enable)
-		ret = ioctl(ios->fd, TIOCMBIC, &flag);
-	else
 		ret = ioctl(ios->fd, TIOCMBIS, &flag);
+	else
+		ret = ioctl(ios->fd, TIOCMBIC, &flag);
 
 	return ret;
 }