gtpci_md_conf_hook
int gtpci_md_conf_hook(void *, int, int, int, pcireg_t);
int gtpci_md_conf_hook(void *, int, int, int, pcireg_t);
.pc_conf_hook = gtpci_md_conf_hook,
int gtpci_md_conf_hook(void *, int, int, int, pcireg_t);
.pc_conf_hook = gtpci_md_conf_hook,