1 files changed, 17 insertions, 17 deletions

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index ec94521c3118..37a45db5bae0 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -2758,6 +2758,12 @@ static int con_open(struct tty_struct *tty, struct file *filp)
                 ret = vc_allocate(currcons);
                 if (ret == 0) {
                         struct vc_data *vc = vc_cons[currcons].d;
+
+                        /* Still being freed */
+                        if (vc->vc_tty) {
+                                release_console_sem();
+                                return -ERESTARTSYS;
+                        }
                         tty->driver_data = vc;
                         vc->vc_tty = tty;
 
@@ -2787,25 +2793,18 @@ static int con_open(struct tty_struct *tty, struct file *filp)
  */
 static void con_close(struct tty_struct *tty, struct file *filp)
 {
-        mutex_lock(&tty_mutex);
-        acquire_console_sem();
-        if (tty && tty->count == 1) {
-                struct vc_data *vc = tty->driver_data;
+        /* Nothing to do - we defer to shutdown */
+}
 
-                if (vc)
-                        vc->vc_tty = NULL;
-                tty->driver_data = NULL;
-                vcs_remove_sysfs(tty);
-                release_console_sem();
-                mutex_unlock(&tty_mutex);
-                /*
-                 * tty_mutex is released, but we still hold BKL, so there is
-                 * still exclusion against init_dev()
-                 */
-                return;
-        }
+static void con_shutdown(struct tty_struct *tty)
+{
+        struct vc_data *vc = tty->driver_data;
+        BUG_ON(vc == NULL);
+        acquire_console_sem();
+        vc->vc_tty = NULL;
+        vcs_remove_sysfs(tty);
         release_console_sem();
-        mutex_unlock(&tty_mutex);
+        tty_shutdown(tty);
 }
 
 static int default_italic_color    = 2; // green (ASCII)
@@ -2930,6 +2929,7 @@ static const struct tty_operations con_ops = {
         .throttle = con_throttle,
         .unthrottle = con_unthrottle,
         .resize = vt_resize,
+        .shutdown = con_shutdown
 };
 
 int __init vty_init(void)