--- a/arch/powerpc/include/asm/pgtable-ppc64.h
+++ b/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -226,7 +226,7 @@ static inline int __ptep_test_and_clear_
 static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 				      pte_t *ptep)
 {
-	unsigned long old;
+	unsigned long old __maybe_unused;
 
        	if ((pte_val(*ptep) & _PAGE_RW) == 0)
        		return;
@@ -236,7 +236,7 @@ static inline void ptep_set_wrprotect(st
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
-	unsigned long old;
+	unsigned long old __maybe_unused;
 
 	if ((pte_val(*ptep) & _PAGE_RW) == 0)
 		return;