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powerpc/mm: Fix compiler warning in pgtable-ppc64.h [-Wunused-but-set-variable]

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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>
This commit is contained in:
Stratos Psomadakis 2011-05-07 04:11:31 +00:00 committed by Benjamin Herrenschmidt
parent af442a1baa
commit 2a2c29c1a5
1 changed files with 6 additions and 7 deletions
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13
arch/powerpc/include/asm/pgtable-ppc64.h
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@ -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);
}
/*