mISDN_freedchannel
mISDN_freedchannel(dch);
mISDN_freedchannel(&hc->dch);
mISDN_freedchannel(&card->dch);
mISDN_freedchannel(&hw->dch);
mISDN_freedchannel(&hw->dch);
mISDN_freedchannel(&isac->dch);
mISDN_freedchannel(&card->dch);
mISDN_freedchannel(&card->dch);
EXPORT_SYMBOL(mISDN_freedchannel);
mISDN_freedchannel(hc->chan[ch].dch);
extern int mISDN_freedchannel(struct dchannel *);