AMDZEN_DF_FIRST_DEVICE
PCI_REG_DEV_G(regs[0]) >= AMDZEN_DF_FIRST_DEVICE) {
PCI_REG_DEV_G(reg) >= AMDZEN_DF_FIRST_DEVICE) {
dfno = stub->azns_dev - AMDZEN_DF_FIRST_DEVICE;