1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index d1e8d500a7e1..8037405e136e 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -345,9 +345,9 @@ void daemonize(const char *name, ...)
         exit_mm(current);
 
         set_special_pids(1, 1);
-        down(&tty_sem);
+        mutex_lock(&tty_mutex);
         current->signal->tty = NULL;
-        up(&tty_sem);
+        mutex_unlock(&tty_mutex);
 
         /* Block and flush all signals */
         sigfillset(&blocked);