i2c_encode_flags_to_addr
if (i2c_encode_flags_to_addr(client) == addr) {
if (client && i2c_encode_flags_to_addr(client) == addr)
i2c_encode_flags_to_addr(client));
status = i2c_check_addr_busy(adap, i2c_encode_flags_to_addr(client));