diff options
Diffstat (limited to 'fs/proc/proc_tty.c')
| -rw-r--r-- | fs/proc/proc_tty.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/proc/proc_tty.c b/fs/proc/proc_tty.c index c1bbfbeb035e..b3a473b0a191 100644 --- a/fs/proc/proc_tty.c +++ b/fs/proc/proc_tty.c @@ -108,6 +108,8 @@ static void *t_start(struct seq_file *m, loff_t *pos) { struct list_head *p; loff_t l = *pos; + + mutex_lock(&tty_mutex); list_for_each(p, &tty_drivers) if (!l--) return list_entry(p, struct tty_driver, tty_drivers); @@ -124,6 +126,7 @@ static void *t_next(struct seq_file *m, void *v, loff_t *pos) static void t_stop(struct seq_file *m, void *v) { + mutex_unlock(&tty_mutex); } static struct seq_operations tty_drivers_op = { |