static void ahci_init_d2h(AHCIDevice *ad)
{
    IDEState *ide_state = &ad->port.ifs[0];
    AHCIPortRegs *pr = &ad->port_regs;

    if (ad->init_d2h_sent) {
        return;
    }

    if (ahci_write_fis_d2h(ad)) {
        ad->init_d2h_sent = true;
        /* We're emulating receiving the first Reg H2D Fis from the device;
         * Update the SIG register, but otherwise proceed as normal. */
        pr->sig = ((uint32_t)ide_state->hcyl << 24) |
            (ide_state->lcyl << 16) |
            (ide_state->sector << 8) |
            (ide_state->nsector & 0xFF);
    }
}

The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.