[PATCH] powerpc/mm: Use PFN_PHYS() in devmem_is_allowed()

[Scott Wood]

This function can run on systems where physical addresses don't
fit in unsigned long, so make sure to use the macro that contains the
proper cast.

Signed-off-by: Scott Wood <scottwood at freescale.com>
---
 arch/powerpc/mm/mem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 7297d204..07052d9 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -563,7 +563,7 @@ subsys_initcall(add_system_ram_resources);
  */
 int devmem_is_allowed(unsigned long pfn)
 {
-	if (iomem_is_exclusive(pfn << PAGE_SHIFT))
+	if (iomem_is_exclusive(PFN_PHYS(pfn)))
 		return 0;
 	if (!page_is_ram(pfn))
 		return 1;
-- 
2.1.0