Please, try this patch maybe it can help localize your problem. drivers/tty/n_tty.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 05e72be..28f15d0 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -230,6 +230,7 @@ static void reset_buffer_flags(struct tty_struct *tty) ldata->canon_head = ldata->canon_data = ldata->erasing = 0; bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE); n_tty_set_room(tty); + check_unthrottle(tty); } /** -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html