diff --git a/include/asm-sparc/prom.h b/include/asm-sparc/prom.h
index 7032d02..b4a061c 100644
--- a/include/asm-sparc/prom.h
+++ b/include/asm-sparc/prom.h
@@ -69,6 +69,8 @@
 #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
 #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
 
+#define OF_BAD_ADDR	((u64)-1)
+
 static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
 {
 	dn->pde = de;