[PATCH] x86_64: Add missing () around arguments of pte_index macro

x86-64: Add missing () around arguments of pte_index macro
Signed-Off-By: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-x86_64/pgtable.h

@@ -384,7 +384,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 }
 
 #define pte_index(address) \
-		((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+		(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
 #define pte_offset_kernel(dir, address) ((pte_t *) pmd_page_kernel(*(dir)) + \
 			pte_index(address))