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path: root/drivers/tty/vt/vt.c
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Diffstat (limited to 'drivers/tty/vt/vt.c')
-rw-r--r--drivers/tty/vt/vt.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 4bea1efaec98..b3915b7ad3e2 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1,6 +1,4 @@
/*
- * linux/drivers/char/vt.c
- *
* Copyright (C) 1991, 1992 Linus Torvalds
*/
@@ -858,7 +856,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
{
unsigned long old_origin, new_origin, new_scr_end, rlth, rrem, err = 0;
unsigned long end;
- unsigned int old_cols, old_rows, old_row_size, old_screen_size;
+ unsigned int old_rows, old_row_size;
unsigned int new_cols, new_rows, new_row_size, new_screen_size;
unsigned int user;
unsigned short *newscreen;
@@ -887,9 +885,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
return -ENOMEM;
old_rows = vc->vc_rows;
- old_cols = vc->vc_cols;
old_row_size = vc->vc_size_row;
- old_screen_size = vc->vc_screenbuf_size;
err = resize_screen(vc, new_cols, new_rows, user);
if (err) {
@@ -1197,6 +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;