1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 665103ccaee8..27b6c297906a 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -2272,7 +2272,9 @@ int tioclinux(struct tty_struct *tty, unsigned long arg)
                         ret = paste_selection(tty);
                         break;
                 case TIOCL_UNBLANKSCREEN:
+                        acquire_console_sem();
                         unblank_screen();
+                        release_console_sem();
                         break;
                 case TIOCL_SELLOADLUT:
                         ret = sel_loadlut(p);
@@ -2317,8 +2319,10 @@ int tioclinux(struct tty_struct *tty, unsigned long arg)
                         }
                         break;
                 case TIOCL_BLANKSCREEN: /* until explicitly unblanked, not only poked */
+                        acquire_console_sem();
                         ignore_poke = 1;
                         do_blank_screen(0);
+                        release_console_sem();
                         break;
                 case TIOCL_BLANKEDSCREEN:
                         ret = console_blanked;