--- zzzz-none-000/linux-5.4.213/include/linux/regmap.h	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/include/linux/regmap.h	2024-08-14 09:02:08.000000000 +0000
@@ -185,7 +185,7 @@
 	pollret ?: ((cond) ? 0 : -ETIMEDOUT); \
 })
 
-#ifdef CONFIG_REGMAP
+#if IS_REACHABLE(CONFIG_REGMAP)
 
 enum regmap_endian {
 	/* Unspecified -> 0 -> Backwards compatible default */