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

Message ID 1429305434-4324-1-git-send-email-scottwood@freescale.com (mailing list archive)
State Accepted
Commit 6c0cc62715bfd0b26f7d1a79e6e8143085950ca7
Delegated to: Scott Wood
Headers show

Commit Message

Scott Wood April 17, 2015, 9:17 p.m. UTC 
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>
---
 arch/powerpc/mm/mem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

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;