Messages in this thread Patch in this message | | | Date | Tue, 22 Dec 2009 15:40:40 -0800 | From | Yinghai Lu <> | Subject | [PATCH 02/25] x86/pci: intel ioh bus num reg accessing fix |
| |
it is above 0x100, so if mmconf is not enable, need to skip it
Reported-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- 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; -- 1.6.0.2
| |