[PATCH] Use 'do {} while (0)' for empty flush_tlb_fix_spurious_fault()macro

[Jesper Juhl]

If one builds the kernel with -Wempty-body one gets this warning:

  mm/memory.c:3432:46: warning: suggest braces around empty body in an ʽifʼ statement [-Wempty-body]

due to the fact that 'flush_tlb_fix_spurious_fault' is a macro that
can sometimes be defined to nothing.

Signed-off-by: Jesper Juhl <jj@xxxxxxxxxxxxx>
---
 arch/x86/include/asm/pgtable.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 18601c8..ebe7e76 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -703,7 +703,7 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm,
 	pte_update(mm, addr, ptep);
 }
 
-#define flush_tlb_fix_spurious_fault(vma, address)
+#define flush_tlb_fix_spurious_fault(vma, address) do {} while (0)
 
 #define mk_pmd(page, pgprot)   pfn_pmd(page_to_pfn(page), (pgprot))
 
-- 
1.7.8


-- 
Jesper Juhl <jj@xxxxxxxxxxxxx>       http://www.chaosbits.net/
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