diff --git a/[refs] b/[refs]
index 8ac1b10d615b..32c2056d67c5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fd01a7a1bf6722e32efa679f15507148784af1f7
+refs/heads/master: cf16807b61d15e42b20407c954a01a3774520ea7
diff --git a/trunk/drivers/tty/n_gsm.c b/trunk/drivers/tty/n_gsm.c
index 8d7766bfef87..da3b31a98654 100644
--- a/trunk/drivers/tty/n_gsm.c
+++ b/trunk/drivers/tty/n_gsm.c
@@ -2989,7 +2989,7 @@ static int gsmtty_tiocmset(struct tty_struct *tty,
 	struct gsm_dlci *dlci = tty->driver_data;
 	unsigned int modem_tx = dlci->modem_tx;
 
-	modem_tx &= clear;
+	modem_tx &= ~clear;
 	modem_tx |= set;
 
 	if (modem_tx != dlci->modem_tx) {