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authorPetr Písař <petr.pisar@atlas.cz>2014-02-06 21:01:23 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-02-13 11:12:00 -0800
commit0930b0950a8996aa88b0d2ba4bb2bab27cc36bc7 (patch)
tree95fc2097e45cdb076684bf11ad5be34ef769a618 /drivers
parent45a7bd635930baa960b6817674c64bdfb8f39570 (diff)
downloadlinux-stericsson-0930b0950a8996aa88b0d2ba4bb2bab27cc36bc7.tar.gz
vt: Fix secure clear screen
\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> Cc: stable <stable@vger.kernel.org> # 3.6 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-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 61b1137d7e56..23b5d32954bf 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;