[PATCH] Fix vesafb display panning regression

Fix vesafb hang when scroll mode is REDRAW.
Signed-off-by: NAntonino Daplas <adaplas@pol.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/video/vesafb.c

@@ -417,6 +417,9 @@ static int __init vesafb_probe(struct platform_device *dev)
 	info->flags = FBINFO_FLAG_DEFAULT |
 		(ypan) ? FBINFO_HWACCEL_YPAN : 0;
 
+	if (!ypan)
+		info->fbops->fb_pan_display = NULL;
+
 	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
 		err = -ENOMEM;
 		goto err;