diff options
| -rw-r--r-- | drivers/char/tty_io.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 939e198d7670..a3afa0c387cd 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -1263,7 +1263,9 @@ static int tty_reopen(struct tty_struct *tty) tty->count++; tty->driver = driver; /* N.B. why do this every time?? */ + mutex_lock(&tty->ldisc_mutex); WARN_ON(!test_bit(TTY_LDISC, &tty->flags)); + mutex_unlock(&tty->ldisc_mutex); return 0; } |