RT2573_BBP_BUSY
if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
if (!(val & RT2573_BBP_BUSY))