it is above 0x100, so if mmconf is not enable, need to skip it
Reported-by: Jens Axboe <jens.axboe@xxxxxxxxxx>
Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
---
arch/x86/pci/intel_bus.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/pci/intel_bus.c b/arch/x86/pci/intel_bus.c
index b7a55dc..baf283a 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 < 0x200)
+ return;
+
if (pci_root_num >= PCI_ROOT_NR) {
printk(KERN_DEBUG "intel_bus.c: PCI_ROOT_NR is too small\n");
return;
--
1.6.4.2
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