diff options
Diffstat (limited to 'drivers/char/tty_io.c')
| -rw-r--r-- | drivers/char/tty_io.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 142427c6e8f3..48b59006afcd 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c | |||
| @@ -129,6 +129,7 @@ LIST_HEAD(tty_drivers); /* linked list of tty drivers */ | |||
| 129 | /* Semaphore to protect creating and releasing a tty. This is shared with | 129 | /* Semaphore to protect creating and releasing a tty. This is shared with |
| 130 | vt.c for deeply disgusting hack reasons */ | 130 | vt.c for deeply disgusting hack reasons */ |
| 131 | DEFINE_MUTEX(tty_mutex); | 131 | DEFINE_MUTEX(tty_mutex); |
| 132 | EXPORT_SYMBOL(tty_mutex); | ||
| 132 | 133 | ||
| 133 | #ifdef CONFIG_UNIX98_PTYS | 134 | #ifdef CONFIG_UNIX98_PTYS |
| 134 | extern struct tty_driver *ptm_driver; /* Unix98 pty masters; for /dev/ptmx */ | 135 | extern struct tty_driver *ptm_driver; /* Unix98 pty masters; for /dev/ptmx */ |