diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 8a8fffa339f00bf1f6a15c0e213ad95132fc5b6b..4f5f3abc9cb3295c34529e9aff1340b7488b910f 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -161,7 +161,9 @@ static int drop_interrupts;
 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
 static int option_lid_wakeup = 1;
 #endif /* CONFIG_PM && CONFIG_PPC32 */
+#if (defined(CONFIG_PM)&&defined(CONFIG_PPC32))||defined(CONFIG_PMAC_BACKLIGHT)
 static int sleep_in_progress;
+#endif
 static unsigned long async_req_locks;
 static unsigned int pmu_irq_stats[11];