powerpc: Further compile fixup for STRICT_MM_TYPECHECKS

A patch of mine was recently committed to fix up STRICT_MM_TYPECHECKS
behaviour on powerpc (f5ea64dcbad89875d130596df14c9b25d994a737).
However, something which breaks it again seems to have slipped in
afterwards.  So, here's another small fix.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 3815d84a1ef4..1ec73938a00f 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -610,7 +610,8 @@ int pci_mmap_legacy_page_range(struct pci_bus *bus,
         pr_debug(" -> mapping phys %llx\n", (unsigned long long)offset);
 
         vma->vm_pgoff = offset >> PAGE_SHIFT;
-        vma->vm_page_prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
+        vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
+                                     | _PAGE_NO_CACHE | _PAGE_GUARDED);
         return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
                                vma->vm_end - vma->vm_start,
                                vma->vm_page_prot);