[PATCH] fbdev: Fix test on unsigned in fb_do_show_logo()

[Roel Kluin <roel.kluin@gmail.com>]

image->d[xy] are unsigned so the check was wrong.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 99bbd28..9f20641 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -403,7 +403,8 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image,
 			image->dx += image->width + 8;
 		}
 	} else if (rotate == FB_ROTATE_UD) {
-		for (x = 0; x < num && image->dx >= 0; x++) {
+		for (x = 0; x < num && image->dx + image->width + 8 >= 0;
+				x++) {
 			info->fbops->fb_imageblit(info, image);
 			image->dx -= image->width + 8;
 		}
@@ -415,7 +416,8 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image,
 			image->dy += image->height + 8;
 		}
 	} else if (rotate == FB_ROTATE_CCW) {
-		for (x = 0; x < num && image->dy >= 0; x++) {
+		for (x = 0; x < num && image->dy + image->height + 8 >= 0;
+				x++) {
 			info->fbops->fb_imageblit(info, image);
 			image->dy -= image->height + 8;
 		}

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