From: Scott Wood <scottwood@freescale.com>
Date: Fri, 17 Apr 2015 21:17:14 +0000 (-0500)
Subject: powerpc/mm: Use PFN_PHYS() in devmem_is_allowed()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6c0cc62715bfd0b26f7d1a79e6e8143085950ca7;p=linux-beck.git

powerpc/mm: Use PFN_PHYS() in devmem_is_allowed()

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@freescale.com>
---

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 45fda71feb27..0f11819d8f1d 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -560,7 +560,7 @@ 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;