* [PATCH] fbcon: Fix limited scroll in SCROLL_PAN_REDRAW mode
@ 2006-06-06 11:09 Antonino A. Daplas
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From: Antonino A. Daplas @ 2006-06-06 11:09 UTC (permalink / raw)
To: Andrew Morton; +Cc: Linux Fbdev development list
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>
---
drivers/video/console/fbcon.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index b910eff..4b7be68 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -1751,7 +1751,7 @@ static int fbcon_scroll(struct vc_data *
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);
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2006-06-06 11:09 [PATCH] fbcon: Fix limited scroll in SCROLL_PAN_REDRAW mode Antonino A. Daplas
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