--- zzzz-none-000/linux-4.1.38/arch/arm/include/asm/pgtable.h	2017-01-18 18:48:06.000000000 +0000
+++ bcm63-7582-715/linux-4.1.38/arch/arm/include/asm/pgtable.h	2020-11-25 10:06:48.000000000 +0000
@@ -237,7 +237,7 @@
 extern void __sync_icache_dcache(pte_t pteval);
 #endif
 
-static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
+static inline void set_pte_at(struct mm_struct *mm __maybe_unused, unsigned long addr,
 			      pte_t *ptep, pte_t pteval)
 {
 	unsigned long ext = 0;