vt: Fix secure clear screen
authorPetr Písař <petr.pisar@atlas.cz>
Thu, 6 Feb 2014 20:01:23 +0000 (21:01 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 13 Feb 2014 19:12:00 +0000 (11:12 -0800)
commit0930b0950a8996aa88b0d2ba4bb2bab27cc36bc7
tree95fc2097e45cdb076684bf11ad5be34ef769a618
parent45a7bd635930baa960b6817674c64bdfb8f39570
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>
drivers/tty/vt/vt.c