aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorPetr Písař <petr.pisar@atlas.cz>2014-02-06 21:01:23 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-02-22 12:41:27 -0800
commit27f0831c1aedad09238f173550919ac7f809e4fa (patch)
tree7cf6a7badbe33ffd42d261e4bae47b7550140a11
parent41ce42d4249cea29cc12cf3e7da9840ee2e5a81e (diff)
downloadlinux-27f0831c1aedad09238f173550919ac7f809e4fa.tar.gz
vt: Fix secure clear screen
commit 0930b0950a8996aa88b0d2ba4bb2bab27cc36bc7 upstream. \E[3J console code (secure clear screen) needs to update_screen(vc) in order to write-through blanks into off-screen video memory. This has been removed accidentally in 3.6 by: commit 81732c3b2fede049a692e58a7ceabb6d18ffb18c Author: Jean-François Moine <moinejf@free.fr> Date: Thu Sep 6 19:24:13 2012 +0200 tty vt: Fix line garbage in virtual console on command line edition Signed-off-by: Petr Písař <petr.pisar@atlas.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/tty/vt/vt.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 740202d8a5c..0d1b3757cfb 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1164,6 +1164,8 @@ static void csi_J(struct vc_data *vc, int vpar)
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;