From 6c0cc62715bfd0b26f7d1a79e6e8143085950ca7 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Fri, 17 Apr 2015 16:17:14 -0500 Subject: [PATCH] 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 --- 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 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; -- 2.20.1