diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
index 60c4c5a..9c9f741 100644
--- a/drivers/usb/dwc3/dwc3-of-simple.c
+++ b/drivers/usb/dwc3/dwc3-of-simple.c
@@ -122,6 +122,7 @@
 	return 0;
 }
 
+#ifdef CONFIG_PM
 static int dwc3_of_simple_runtime_suspend(struct device *dev)
 {
 	struct dwc3_of_simple	*simple = dev_get_drvdata(dev);
@@ -150,6 +151,7 @@
 
 	return 0;
 }
+#endif
 
 static const struct dev_pm_ops dwc3_of_simple_dev_pm_ops = {
 	SET_RUNTIME_PM_OPS(dwc3_of_simple_runtime_suspend,