PCI_VGA_STATE_CHANGE_DECODES
WARN_ON((flags & PCI_VGA_STATE_CHANGE_DECODES) && (command_bits & ~(PCI_COMMAND_IO|PCI_COMMAND_MEMORY)));
if (flags & PCI_VGA_STATE_CHANGE_DECODES) {
flags |= PCI_VGA_STATE_CHANGE_DECODES;
flags |= PCI_VGA_STATE_CHANGE_DECODES;