--- zzzz-none-000/linux-4.4.60/include/linux/regmap.h	2017-04-08 07:53:53.000000000 +0000
+++ dragonfly-4020-701/linux-4.4.60/include/linux/regmap.h	2018-11-08 13:36:17.000000000 +0000
@@ -65,7 +65,7 @@
 	unsigned int delay_us;
 };
 
-#ifdef CONFIG_REGMAP
+#if IS_ENABLED(CONFIG_REGMAP)
 
 enum regmap_endian {
 	/* Unspecified -> 0 -> Backwards compatible default */