From: Malcom Parsons Date: Thu, 8 Jun 2006 07:43:42 +0000 (-0700) Subject: [PATCH] fbcon: fix limited scroll in SCROLL_PAN_REDRAW mode X-Git-Tag: v2.6.17~39 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=26e780e8ef1cc3ef581a07aafe2346bb5a07b4f9;p=linux-2.6 [PATCH] fbcon: fix limited scroll in SCROLL_PAN_REDRAW mode From: Malcom Parsons 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c index 953eb8c171..47ba1a79ad 100644 --- a/drivers/video/console/fbcon.c +++ b/drivers/video/console/fbcon.c @@ -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);