ICHD_MDMIN
return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
chip->ichd[ICHD_MDMIN].substream = NULL;
if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
chip->ichd[ICHD_MDMIN].ac97 = x97;