[PATCH] arm64/mm: fix variable 'pud' set but not used

[Qian Cai]

GCC throws a warning,

arch/arm64/mm/mmu.c: In function 'pud_free_pmd_page':
arch/arm64/mm/mmu.c:1033:8: warning: variable 'pud' set but not used
[-Wunused-but-set-variable]
  pud_t pud;
        ^~~

because pud_table() is a macro and compiled away. Fix it by making it a
static inline function and for pud_sect() as well.

Signed-off-by: Qian Cai <c...@lca.pw>
---
 arch/arm64/include/asm/pgtable.h | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 3f5461f7b560..541cb4a15341 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -447,8 +447,15 @@ extern pgprot_t phys_mem_access_prot(struct file *file, 
unsigned long pfn,
                                 PMD_TYPE_SECT)
 
 #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3
-#define pud_sect(pud)          (0)
-#define pud_table(pud)         (1)
+static inline bool pud_sect(pud_t pud)
+{
+       return false;
+}
+
+static inline bool pud_table(pud_t pud)
+{
+       return true;
+}
 #else
 #define pud_sect(pud)          ((pud_val(pud) & PUD_TYPE_MASK) == \
                                 PUD_TYPE_SECT)
-- 
1.8.3.1