[Cbe-oss-dev] [PATCH 1/6] fbdev: Avoid vertical overflow when making space for the logo

[Geert Uytterhoeven]

fbcon_prepare_logo(): Avoid vertical overflow when making space for the logo

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven at sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand at am.sony.com>

---
 drivers/video/console/fbcon.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

--- geert-linux-src.orig/drivers/video/console/fbcon.c
+++ geert-linux-src/drivers/video/console/fbcon.c
@@ -619,8 +619,13 @@ static void fbcon_prepare_logo(struct vc
 			r -= cols;
 		}
 		if (!save) {
-			vc->vc_y += logo_lines;
-			vc->vc_pos += logo_lines * vc->vc_size_row;
+			int lines;
+			if (vc->vc_y + logo_lines >= rows)
+				lines = rows - vc->vc_y -1;
+			else
+				lines = logo_lines;
+			vc->vc_y += lines;
+			vc->vc_pos += lines * vc->vc_size_row;
 		}
 	}
 	scr_memsetw((unsigned short *) vc->vc_origin,

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- Sony Network and Software Technology Center Europe (NSCE)
Geert.Uytterhoeven at sonycom.com ------- The Corporate Village, Da Vincilaan 7-D1
Voice +32-2-7008453 Fax +32-2-7008622 ---------------- B-1935 Zaventem, Belgium