diff options
Diffstat (limited to 'drivers/pci/setup-bus.c')
| -rw-r--r-- | drivers/pci/setup-bus.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 54404917be9a5..8f7bcf56f1498 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -55,16 +55,16 @@ pbus_assign_resources_sorted(struct pci_bus *bus) list_for_each_entry(dev, &bus->devices, bus_list) { u16 class = dev->class >> 8; - /* Don't touch classless devices or host bridges. */ + /* Don't touch classless devices or host bridges or ioapics. */ if (class == PCI_CLASS_NOT_DEFINED || class == PCI_CLASS_BRIDGE_HOST) continue; - /* Don't touch ioapics if it has the assigned resources. */ + /* Don't touch ioapic devices already enabled by firmware */ if (class == PCI_CLASS_SYSTEM_PIC) { - res = &dev->resource[0]; - if (res[0].start || res[1].start || res[2].start || - res[3].start || res[4].start || res[5].start) + u16 command; + pci_read_config_word(dev, PCI_COMMAND, &command); + if (command & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) continue; } |