nvme_get_feat_req_init_by_disc
if (!nvme_get_feat_req_init_by_disc(npa->npa_ctrl, disc, &req)) {
extern bool nvme_get_feat_req_init_by_disc(nvme_ctrl_t *,
if (!nvme_get_feat_req_init_by_disc(ctrl, disc, &init->ngfi_req)) {