--- vanilla-2.6.29/drivers/video/efifb.c	2009-03-23 23:12:14.000000000 +0000
+++ linux-2.6.29.noarch/drivers/video/efifb.c	2009-04-01 19:24:01.000000000 +0100
@@ -208,12 +208,15 @@
 	unsigned int size_total;
 	int request_succeeded = 0;
 
-	printk(KERN_INFO "efifb: probing for efifb\n");
-
 	if (!screen_info.lfb_depth)
 		screen_info.lfb_depth = 32;
 	if (!screen_info.pages)
 		screen_info.pages = 1;
+	if (!screen_info.lfb_base) {
+		printk(KERN_DEBUG "efifb: invalid framebuffer address\n");
+		return -ENODEV;
+	}
+	printk(KERN_INFO "efifb: probing for efifb\n");
 
 	/* just assume they're all unset if any are */
 	if (!screen_info.blue_size) {