&ptep->pte isn't always an unsigned long *, so cast it to avoid a warning.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>

---
 include/asm-x86/pgtable.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -340,7 +340,7 @@ static inline pte_t ptep_get_and_clear_f
 #define __HAVE_ARCH_PTEP_SET_WRPROTECT
 static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
-	clear_bit(_PAGE_BIT_RW, &ptep->pte);
+	clear_bit(_PAGE_BIT_RW, (unsigned long *)&ptep->pte);
 	pte_update(mm, addr, ptep);
 }
 


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