diff options
| -rw-r--r-- | drivers/tty/tty_io.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 26bb78c30a00..a9355ce1c6d5 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -629,6 +629,11 @@ static void __tty_hangup(struct tty_struct *tty, int exit_session) tty_lock(tty); + if (test_bit(TTY_HUPPED, &tty->flags)) { + tty_unlock(tty); + return; + } + /* some functions below drop BTM, so we need this bit */ set_bit(TTY_HUPPING, &tty->flags); |