[ARM] Fix nommu build

Fix warnings and errors in arch/arm/mm for nommu build.
Remove commented out function prototype in pgtable-nommu.h

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index bb2bc9ab6bd3..a44e30970635 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -1,4 +1,7 @@
 /* the upper-most page table pointer */
+
+#ifdef CONFIG_MMU
+
 extern pmd_t *top_pmd;
 
 #define TOP_PTE(x)      pte_offset_kernel(top_pmd, x)
@@ -13,6 +16,8 @@ static inline pmd_t *pmd_off_k(unsigned long virt)
         return pmd_off(pgd_offset_k(virt), virt);
 }
 
+#endif
+
 struct map_desc;
 struct meminfo;
 struct pglist_data;