diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
index 5d9d70c..342a2a0 100644
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@@ -30,19 +30,19 @@
 /* Other architectures wishing to use this simple topology API should fill
    in the below functions as appropriate in their own <asm/topology.h> file. */
 #ifndef cpu_to_node
-#define cpu_to_node(cpu)	(0)
+#define cpu_to_node(cpu)	((void)(cpu),0)
 #endif
 #ifndef parent_node
-#define parent_node(node)	(0)
+#define parent_node(node)	((void)(node),0)
 #endif
 #ifndef node_to_cpumask
-#define node_to_cpumask(node)	(cpu_online_map)
+#define node_to_cpumask(node)	((void)node, cpu_online_map)
 #endif
 #ifndef node_to_first_cpu
-#define node_to_first_cpu(node)	(0)
+#define node_to_first_cpu(node)	((void)(node),0)
 #endif
 #ifndef pcibus_to_node
-#define pcibus_to_node(node)	(-1)
+#define pcibus_to_node(bus)	((void)(bus), -1)
 #endif
 
 #ifndef pcibus_to_cpumask