tty: Clean console safely

[cascardo/linux.git] / drivers / tty / vt / vt.c

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index a48da20..b3915b7 100644 (file)
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1193,6 +1193,13 @@ static void csi_J(struct vc_data *vc, int vpar)
                                              vc->vc_x + 1);
                        }
                        break;
+               case 3: /* erase scroll-back buffer (and whole display) */
+                       scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char,
+                                   vc->vc_screenbuf_size >> 1);
+                       set_origin(vc);
+                       if (CON_IS_VISIBLE(vc))
+                               update_screen(vc);
+                       /* fall through */
                case 2: /* erase whole display */
                        count = vc->vc_cols * vc->vc_rows;
                        start = (unsigned short *)vc->vc_origin;