tty vt: Fix a regression in command line edition

The commit 81732c3b2fede049a692e58a7ceabb6d18ffb18c
("Fix line garbage in virtual console on command line edition")
made a regression with some machines: some characters were not erased
after line edition.

This patch adjusts the number of moved characters and the size of the
region to be updated.

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Tested-by: Krzysztof Mazur <krzysiek@podlesie.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index f87d7e8964bf..4e0d0c3734b3 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -539,25 +539,25 @@ static void insert_char(struct vc_data *vc, unsigned int nr)
 {
         unsigned short *p = (unsigned short *) vc->vc_pos;
 
-        scr_memmovew(p + nr, p, vc->vc_cols - vc->vc_x);
+        scr_memmovew(p + nr, p, (vc->vc_cols - vc->vc_x) * 2);
         scr_memsetw(p, vc->vc_video_erase_char, nr * 2);
         vc->vc_need_wrap = 0;
         if (DO_UPDATE(vc))
                 do_update_region(vc, (unsigned long) p,
-                        (vc->vc_cols - vc->vc_x) / 2 + 1);
+                        vc->vc_cols - vc->vc_x);
 }
 
 static void delete_char(struct vc_data *vc, unsigned int nr)
 {
         unsigned short *p = (unsigned short *) vc->vc_pos;
 
-        scr_memcpyw(p, p + nr, vc->vc_cols - vc->vc_x - nr);
+        scr_memcpyw(p, p + nr, (vc->vc_cols - vc->vc_x - nr) * 2);
         scr_memsetw(p + vc->vc_cols - vc->vc_x - nr, vc->vc_video_erase_char,
                         nr * 2);
         vc->vc_need_wrap = 0;
         if (DO_UPDATE(vc))
                 do_update_region(vc, (unsigned long) p,
-                        (vc->vc_cols - vc->vc_x) / 2);
+                        vc->vc_cols - vc->vc_x);
 }
 
 static int softcursor_original;