[PATCH] mmconfig: fix unreachable_devices()
Currently, unreachable_devices() compares value of mmconfig and value
of conf1. But it doesn't check the device is reachable or not.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
diff --git a/arch/i386/pci/mmconfig-shared.c b/arch/i386/pci/mmconfig-shared.c
index 4ea0852..473db62 100644
--- a/arch/i386/pci/mmconfig-shared.c
+++ b/arch/i386/pci/mmconfig-shared.c
@@ -43,12 +43,14 @@
if (val1 == 0xffffffff)
continue;
- raw_pci_ops->read(0, bus, devfn, 0, 4, &val2);
- if (val1 != val2) {
- set_bit(i + 32 * bus, pci_mmcfg_fallback_slots);
- printk(KERN_NOTICE "PCI: No mmconfig possible"
- " on device %02x:%02x\n", bus, i);
+ if (pci_mmcfg_arch_reachable(0, bus, devfn)) {
+ raw_pci_ops->read(0, bus, devfn, 0, 4, &val2);
+ if (val1 == val2)
+ continue;
}
+ set_bit(i + 32 * bus, pci_mmcfg_fallback_slots);
+ printk(KERN_NOTICE "PCI: No mmconfig possible on device"
+ " %02x:%02x\n", bus, i);
}
}
}