diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 5451eb1e781d..fb8d2d24e4bb 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -38,7 +38,7 @@ extern void free_percpu(const void *);
 
 #else /* CONFIG_SMP */
 
-#define per_cpu_ptr(ptr, cpu) (ptr)
+#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); (ptr); })
 
 static inline void *__alloc_percpu(size_t size, size_t align)
 {