BRCMU_CHSPEC_CH_MASK
ch->chnum = (u8)(ch->chspec & BRCMU_CHSPEC_CH_MASK);
ch->chnum = (u8)(ch->chspec & BRCMU_CHSPEC_CH_MASK);
brcmu_maskset16(&ch->chspec, BRCMU_CHSPEC_CH_MASK,
brcmu_maskset16(&ch->chspec, BRCMU_CHSPEC_CH_MASK,