x86/pci: fix mmconfig detection with 32bit near 4g

[sfrench/cifs-2.6.git] / arch / x86 / pci / mmconfig-shared.c

diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index 905bb526b13350e88e258c69162240f5e99fbee3..8766b0e216c5f1a139a7094630933670dd3f1cc4 100644 (file)
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -418,7 +418,7 @@ static int __init is_acpi_reserved(u64 start, u64 end, unsigned not_used)
        struct resource mcfg_res;
 
        mcfg_res.start = start;
-       mcfg_res.end = end;
+       mcfg_res.end = end - 1;
        mcfg_res.flags = 0;
 
        acpi_get_devices("PNP0C01", find_mboard_resource, &mcfg_res, NULL);
@@ -439,7 +439,7 @@ static int __init is_mmconf_reserved(check_reserved_t is_reserved,
        u64 old_size = size;
        int valid = 0;
 
-       while (!is_reserved(addr, addr + size - 1, E820_RESERVED)) {
+       while (!is_reserved(addr, addr + size, E820_RESERVED)) {
                size >>= 1;
                if (size < (16UL<<20))
                        break;