pcidr_check_string
int pcidr_check_string(char *, ...);
if (pcidr_check_string(val, EC_DR, NULL) != 0) {
if (pcidr_check_string(val, ESC_DR_REQ, NULL) != 0) {
if (pcidr_check_string(val, NULL) != 0) {
if (pcidr_check_string(val, DR_REQ_INCOMING_RES, DR_REQ_OUTGOING_RES,
if (pcidr_check_string(drp->dr_ap_id, NULL) != 0) {