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-rw-r--r--drivers/char/vt.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 665103ccaee..27b6c297906 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;