Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[firefly-linux-kernel-4.4.55.git] / drivers / tty / tty_io.c

diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index d3448a90f0f9fed6e59408b03416f12b9182a108..34110719fe03776ee6f989d7efc05d6875339a7f 100644 (file)
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -878,9 +878,8 @@ void disassociate_ctty(int on_exit)
        spin_lock_irq(&current->sighand->siglock);
        put_pid(current->signal->tty_old_pgrp);
        current->signal->tty_old_pgrp = NULL;
-       spin_unlock_irq(&current->sighand->siglock);
 
-       tty = get_current_tty();
+       tty = tty_kref_get(current->signal->tty);
        if (tty) {
                unsigned long flags;
                spin_lock_irqsave(&tty->ctrl_lock, flags);
@@ -897,6 +896,7 @@ void disassociate_ctty(int on_exit)
 #endif
        }
 
+       spin_unlock_irq(&current->sighand->siglock);
        /* Now clear signal->tty under the lock */
        read_lock(&tasklist_lock);
        session_clear_tty(task_session(current));