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[PATCH] fbcon: fix limited scroll in SCROLL_PAN_REDRAW mode

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From: Malcom Parsons <malcolm.parsons@gmail.com>

When scrolling up in SCROLL_PAN_REDRAW mode with a large limited scroll
region, the bottom few lines have to be redrawn.  Without this patch, the
wrong text is drawn into these lines, corrupting the display.

Observed in 2.6.14 when running an IRC client in the Nintendo DS linux
port.

I haven't tested if scrolling down has the same problem.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Malcom Parsons 2006-06-08 00:43:42 -07:00 committed by Linus Torvalds
parent 45b35a5ced
commit 26e780e8ef
1 changed files with 1 additions and 1 deletions
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2
drivers/video/console/fbcon.c
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@ -1745,7 +1745,7 @@ static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
fbcon_redraw_move(vc, p, 0, t, count);
ypan_up_redraw(vc, t, count);
if (vc->vc_rows - b > 0)
fbcon_redraw_move(vc, p, b - count,
fbcon_redraw_move(vc, p, b,
vc->vc_rows - b, b);
} else
fbcon_redraw_move(vc, p, t + count, b - t - count, t);