REG_WMAC_MU_BF_CTL
mu_bf_ctl = rtw_read16(rtwdev, REG_WMAC_MU_BF_CTL) & 0xC000;
rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, mu_bf_ctl);
rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, 0);
rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, 0);