PCIR_SUBDEV_0
dinfo->cfg.subdevice = pci_read_config(dev, PCIR_SUBDEV_0, 2);
cfg->subdevice = REG(PCIR_SUBDEV_0, 2);
d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2);
d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2);
sc->hw.subsystem_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
hw->subsystem_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
acb->sub_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
sub_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
subdevice = pci_read_config(dev, PCIR_SUBDEV_0, /* bytes */ 2);