diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index bd4298b..13e4ecc 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -2104,6 +2104,9 @@
 
 	cflag = termios->c_cflag;
 
+	if (old_termios == 0)
+		goto no_skip;
+
 	if (old_termios->c_cflag == termios->c_cflag
 	    && old_termios->c_ispeed == termios->c_ispeed
 	    && old_termios->c_ospeed == termios->c_ospeed)
@@ -2117,6 +2120,7 @@
 	    (termios->c_cflag & (CSIZE|PARODD|PARENB|CMSPAR|CSTOPB)))
 		goto no_data_parity_stop_changes;
 
+no_skip:
 	/* Set number of data bits, parity, stop bits */
 
 	urb_value = 0;