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tty: vt, fix bogus division in csi_J 

In csi_J(3), the third parameter of scr_memsetw (vc_screenbuf_size) is
divided by 2 inappropriatelly. But scr_memsetw expects size, not
count, because it divides the size by 2 on its own before doing actual
memset-by-words.

So remove the bogus division.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Petr Písař <ppisar@redhat.com>
Fixes: f8df13e0a9 (tty: Clean console safely)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2016-10-03 11:00:17 +02:00 committed by Greg Kroah-Hartman
parent 07d9a38068
commit 42acfc6615
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/vt/vt.c
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@ -1176,7 +1176,7 @@ static void csi_J(struct vc_data *vc, int vpar)
break;
case 3: /* erase scroll-back buffer (and whole display) */
scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char,
vc->vc_screenbuf_size >> 1);
vc->vc_screenbuf_size);
set_origin(vc);
if (con_is_visible(vc))
update_screen(vc);