ibt_detach_mcg
ret = ibt_detach_mcg(chan->ch_chan, mcg->mg_mcginfo);
(void) ibt_detach_mcg(chan->ch_chan, mcg->mg_mcginfo);
ret = ibt_detach_mcg(chan_hdl, mcg->mg_mcginfo);
ret = ibt_detach_mcg(chan_hdl, mcg->mg_mcginfo);
ret = ibt_detach_mcg(chan->ch_chan, mcg->mg_mcginfo);
ret = ibt_detach_mcg(info->ti_chan, info->ti_advertise_mcg);
(void) ibt_detach_mcg(state->id_chnl_hdl, &mce->mc_info);
rc = ibt_detach_mcg(uqp->qp, &mcg);
rc = ibt_detach_mcg(uqp->qp, &mc->mcg);
ibt_status_t ibt_detach_mcg(ibt_channel_hdl_t ud_chan,