[PATCH 36/37] Cavium OCTEON: pmd_none - use pmd_val() in pmd_val().

[ddaney@caviumnetworks.com]

From: David Daney <ddaney@caviumnetworks.com>

Before marking pmd_val as invalid_pte_table, factor in existing value
for pmd_val.

Signed-off-by: Paul Gortmaker <Paul.Gortmaker@windriver.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
---
 arch/mips/include/asm/pgtable-64.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/mips/include/asm/pgtable-64.h 
b/arch/mips/include/asm/pgtable-64.h
index 943515f..bb93bd5 100644
--- a/arch/mips/include/asm/pgtable-64.h
+++ b/arch/mips/include/asm/pgtable-64.h
@@ -129,7 +129,12 @@ extern pmd_t empty_bad_pmd_table[PTRS_PER_PMD];
  */
 static inline int pmd_none(pmd_t pmd)
 {
+#ifdef CONFIG_CPU_CAVIUM_OCTEON
+       return (pmd_val(pmd) == (unsigned long) invalid_pte_table) ||
+                               (!pmd_val(pmd));
+#else
        return pmd_val(pmd) == (unsigned long) invalid_pte_table;
+#endif
 }
 
 #define pmd_bad(pmd)           (pmd_val(pmd) & ~PAGE_MASK)
-- 
1.5.5.1