1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index 4941b9b14b97..c0fcad9f826c 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1227,7 +1227,7 @@ asmlinkage long sys_setsid(void)
         struct pid *pid;
         int err = -EPERM;
 
-        down(&tty_sem);
+        mutex_lock(&tty_mutex);
         write_lock_irq(&tasklist_lock);
 
         pid = find_pid(PIDTYPE_PGID, group_leader->pid);
@@ -1241,7 +1241,7 @@ asmlinkage long sys_setsid(void)
         err = process_group(group_leader);
 out:
         write_unlock_irq(&tasklist_lock);
-        up(&tty_sem);
+        mutex_unlock(&tty_mutex);
         return err;
 }