From: Alan Cox <alan@lxorguk.ukuu.org.uk>

For the devices that have no hardware settings set up the termios return
properly.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


diff -puN drivers/usb/serial/option.c~option-termios-handling drivers/usb/serial/option.c
--- a/drivers/usb/serial/option.c~option-termios-handling
+++ a/drivers/usb/serial/option.c
@@ -311,7 +311,8 @@ static void option_set_termios(struct us
 			struct ktermios *old_termios)
 {
 	dbg("%s", __FUNCTION__);
-
+	/* Doesn't support option setting */
+	tty_termios_copy_hw(port->tty->termios, old_termios);
 	option_send_setup(port);
 }
 
_