From 36f71405e63f3d1e4c2a8dd98523820bbca8e078 Mon Sep 17 00:00:00 2001
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Mon, 12 Feb 2007 00:54:53 -0800
Subject: [PATCH] tgafb: fix copying overlapping areas
The direction of copying in the copyarea functions is selected incorrectly,
resulting in corruption. This is a fix.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: James Simmons <jsimmons@infradead.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/video/tgafb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
(limited to 'drivers')
diff --git a/drivers/video/tgafb.c b/drivers/video/tgafb.c
index 0a00a6cc7c2b..9c23a783e713 100644
--- a/drivers/video/tgafb.c
+++ b/drivers/video/tgafb.c
@@ -885,7 +885,7 @@ copyarea_line_8bpp(struct fb_info *info, u32 dy, u32 sy,
n64 = (height * width) / 64;
- if (dy < sy) {
+ if (sy < dy) {
spos = (sy + height) * width;
dpos = (dy + height) * width;
@@ -933,7 +933,7 @@ copyarea_line_32bpp(struct fb_info *info, u32 dy, u32 sy,
n16 = (height * width) / 16;
- if (dy < sy) {
+ if (sy < dy) {
src = tga_fb + (sy + height) * width * 4;
dst = tga_fb + (dy + height) * width * 4;
--
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