--- zzzz-none-000/linux-4.1.38/include/linux/page_ext.h	2017-01-18 18:48:06.000000000 +0000
+++ bcm63-7582-715/linux-4.1.38/include/linux/page_ext.h	2020-11-25 10:06:48.000000000 +0000
@@ -64,11 +64,11 @@
 #else /* !CONFIG_PAGE_EXTENSION */
 struct page_ext;
 
-static inline void pgdat_page_ext_init(struct pglist_data *pgdat)
+static inline void pgdat_page_ext_init(struct pglist_data *pgdat __maybe_unused)
 {
 }
 
-static inline struct page_ext *lookup_page_ext(struct page *page)
+static inline struct page_ext *lookup_page_ext(struct page *page __maybe_unused)
 {
 	return NULL;
 }