2 files changed, 5 insertions, 1 deletions

diff --git a/arch/x86/pci/bus_numa.c b/arch/x86/pci/bus_numa.c
index 145df00e0387..f939d603adfa 100644
--- a/arch/x86/pci/bus_numa.c
+++ b/arch/x86/pci/bus_numa.c
@@ -51,7 +51,7 @@ void x86_pci_root_bus_res_quirks(struct pci_bus *b)
         }
 }
 
-void __init update_res(struct pci_root_info *info, size_t start,
+void __devinit update_res(struct pci_root_info *info, size_t start,
                               size_t end, unsigned long flags, int merge)
 {
         int i;
diff --git a/arch/x86/pci/intel_bus.c b/arch/x86/pci/intel_bus.c
index b7a55dc55d13..f81a2fa8fe25 100644
--- a/arch/x86/pci/intel_bus.c
+++ b/arch/x86/pci/intel_bus.c
@@ -49,6 +49,10 @@ static void __devinit pci_root_bus_res(struct pci_dev *dev)
         u64 mmioh_base, mmioh_end;
         int bus_base, bus_end;
 
+        /* some sys doesn't get mmconf enabled */
+        if (dev->cfg_size < 0x120)
+                return;
+
         if (pci_root_num >= PCI_ROOT_NR) {
                 printk(KERN_DEBUG "intel_bus.c: PCI_ROOT_NR is too small\n");
                 return;