From: Frank Pan <frankpzh@gmail.com>
Date: Wed, 26 May 2010 07:37:43 +0000 (+0800)
Subject: tty: fix a little bug in scrup, vt.c
X-Git-Tag: v2.6.35-rc2~16^2~3
X-Git-Url: http://bbs.cooldavid.org/git/?p=net-next-2.6.git;a=commitdiff_plain;h=962400e8fd29981a7b166e463dd143b6ac6a3e76

tty: fix a little bug in scrup, vt.c

The code uses vc->vc_cols instead of vc->vc_size_row by mistake, it
will cause half of the region which is going to clear remain
uncleared.
The issue happens in background consoles, so it's hard to observe.

Frank Pan

Signed-off-by: Frank Pan <frankpzh@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 7cdb6ee569c..1296c42ed5c 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -304,7 +304,7 @@ static void scrup(struct vc_data *vc, unsigned int t, unsigned int b, int nr)
 	d = (unsigned short *)(vc->vc_origin + vc->vc_size_row * t);
 	s = (unsigned short *)(vc->vc_origin + vc->vc_size_row * (t + nr));
 	scr_memmovew(d, s, (b - t - nr) * vc->vc_size_row);
-	scr_memsetw(d + (b - t - nr) * vc->vc_cols, vc->vc_video_erase_char,
+	scr_memsetw(d + (b - t - nr) * vc->vc_size_row, vc->vc_video_erase_char,
 		    vc->vc_size_row * nr);
 }