diff --git a/sound/ac97_bus.c b/sound/ac97_bus.c
index 66de2c2..7fa37e1 100644
--- a/sound/ac97_bus.c
+++ b/sound/ac97_bus.c
@@ -26,6 +26,7 @@
 	return 1;
 }
 
+#ifdef CONFIG_PM
 static int ac97_bus_suspend(struct device *dev, pm_message_t state)
 {
 	int ret = 0;
@@ -45,12 +46,15 @@
 
 	return ret;
 }
+#endif /* CONFIG_PM */
 
 struct bus_type ac97_bus_type = {
 	.name		= "ac97",
 	.match		= ac97_bus_match,
+#ifdef CONFIG_PM
 	.suspend	= ac97_bus_suspend,
 	.resume		= ac97_bus_resume,
+#endif /* CONFIG_PM */
 };
 
 static int __init ac97_bus_init(void)