diff --git a/include/linux/pmu.h b/include/linux/pmu.h
index 37ca573..5ad913f 100644
--- a/include/linux/pmu.h
+++ b/include/linux/pmu.h
@@ -226,7 +226,7 @@
 extern void pmu_backlight_init(void);
 
 /* some code needs to know if the PMU was suspended for hibernation */
-#ifdef CONFIG_PM
+#if defined(CONFIG_PM) && defined(CONFIG_PPC32)
 extern int pmu_sys_suspended;
 #else
 /* if power management is not configured it can't be suspended */