From 2a2c29c1a581319f4485af55e8d628d89e8f2583 Mon Sep 17 00:00:00 2001
From: Stratos Psomadakis <psomas@cslab.ece.ntua.gr>
Date: Sat, 7 May 2011 04:11:31 +0000
Subject: [PATCH] powerpc/mm: Fix compiler warning in pgtable-ppc64.h
[-Wunused-but-set-variable]
The variable 'old' is set but not used in the wrprotect functions in
arch/powerpc/include/asm/pgtable-ppc64.h, which can trigger a compiler warning.
Remove the variable, since it's not used anyway.
Signed-off-by: Stratos Psomadakis <psomas@ece.ntua.gr>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/include/asm/pgtable-ppc64.h | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h
index 2b09cd522d333..81576ee0cfb1d 100644
--- a/arch/powerpc/include/asm/pgtable-ppc64.h
+++ b/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -257,21 +257,20 @@ static inline int __ptep_test_and_clear_young(struct mm_struct *mm,
static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
- unsigned long old;
- if ((pte_val(*ptep) & _PAGE_RW) == 0)
- return;
- old = pte_update(mm, addr, ptep, _PAGE_RW, 0);
+ if ((pte_val(*ptep) & _PAGE_RW) == 0)
+ return;
+
+ pte_update(mm, addr, ptep, _PAGE_RW, 0);
}
static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
unsigned long addr, pte_t *ptep)
{
- unsigned long old;
-
if ((pte_val(*ptep) & _PAGE_RW) == 0)
return;
- old = pte_update(mm, addr, ptep, _PAGE_RW, 1);
+
+ pte_update(mm, addr, ptep, _PAGE_RW, 1);
}
/*
--
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