- if (class == PCI_CLASS_DISPLAY_VGA ||
- class == PCI_CLASS_NOT_DEFINED_VGA)
- bus->bridge_ctl |= PCI_BRIDGE_CTL_VGA;
+ /* Don't touch ioapic devices already enabled by firmware */
+ if (class == PCI_CLASS_SYSTEM_PIC) {
+ u16 command;
+ pci_read_config_word(dev, PCI_COMMAND, &command);
+ if (command & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY))
+ continue;
+ }