From: Maciej W. Rozycki <macro@linux-mips.org>
Date: Mon, 12 Feb 2007 08:54:53 +0000 (-0800)
Subject: [PATCH] tgafb: fix copying overlapping areas
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=36f71405e63f3d1e4c2a8dd98523820bbca8e078;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

[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>
---

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;