resource: allow MMIO exclusivity for device drivers

[linux-2.6-omap-h63xx.git] / arch / x86 / mm / init_64.c

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 54c437e96541f2764aaeb566793b092e2af2f219..23f68e77ad1fde95975c5b6e3cf163eb7850f305 100644 (file)
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -888,6 +888,8 @@ int devmem_is_allowed(unsigned long pagenr)
 {
        if (pagenr <= 256)
                return 1;
+       if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
+               return 0;
        if (!page_is_ram(pagenr))
                return 1;
        return 0;