* [PATCH] Fix fbcon limited scroll in SCROLL_PAN_REDRAW mode
@ 2006-06-04 10:02 Malcolm Parsons
0 siblings, 0 replies; only message in thread
From: Malcolm Parsons @ 2006-06-04 10:02 UTC (permalink / raw)
To: linux-fbdev-devel
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.
Patch against 2.6.17-rc5 (git):
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 953eb8c..47ba1a7 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -1745,7 +1745,7 @@ 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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2006-06-04 10:02 [PATCH] Fix fbcon limited scroll in SCROLL_PAN_REDRAW mode Malcolm Parsons
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