BWN_HF_SKIP_CFP_UPDATE
bwn_hf_write(mac, bwn_hf_read(mac) | BWN_HF_SKIP_CFP_UPDATE);
bwn_hf_write(mac, bwn_hf_read(mac) & ~BWN_HF_SKIP_CFP_UPDATE);
hf &= ~BWN_HF_SKIP_CFP_UPDATE;