pci_msi_get_nintrs
extern int pci_msi_get_nintrs(dev_info_t *rdip, int type, int *nintrs);
if (pci_msi_get_nintrs(hdlp->ih_dip, hdlp->ih_type,
ret = pci_msi_get_nintrs(rdip, hdlp->ih_type, (int *)result);
ret = pci_msi_get_nintrs(rdip, hdlp->ih_type, (int *)result);