diff -Nru a/arch/ppc64/kernel/vio.c b/arch/ppc64/kernel/vio.c
--- a/arch/ppc64/kernel/vio.c	Tue Jan  6 16:29:17 2004
+++ b/arch/ppc64/kernel/vio.c	Tue Jan  6 16:29:17 2004
@@ -189,7 +189,7 @@
 		const struct vio_device_id* id;

 		id = vio_match_device(driver->id_table, dev);
-		if (id && (0 < driver->probe(dev, id))) {
+		if (id && (0 == driver->probe(dev, id))) {
 			printk(KERN_DEBUG "%s: driver %s/%s took device %p\n",
 				__FUNCTION__, id->type, id->compat, dev);
 			dev->driver = driver;