diff options
Diffstat (limited to 'drivers/tty/tty_ioctl.c')
| -rw-r--r-- | drivers/tty/tty_ioctl.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c index cd1285c3bfe9..dcf5c0af7de9 100644 --- a/drivers/tty/tty_ioctl.c +++ b/drivers/tty/tty_ioctl.c @@ -1177,16 +1177,20 @@ int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file, return retval; switch (arg) { case TCOOFF: + spin_lock_irq(&tty->flow_lock); if (!tty->flow_stopped) { tty->flow_stopped = 1; - stop_tty(tty); + __stop_tty(tty); } + spin_unlock_irq(&tty->flow_lock); break; case TCOON: + spin_lock_irq(&tty->flow_lock); if (tty->flow_stopped) { tty->flow_stopped = 0; - start_tty(tty); + __start_tty(tty); } + spin_unlock_irq(&tty->flow_lock); break; case TCIOFF: if (STOP_CHAR(tty) != __DISABLED_CHAR) |