PMBUS_IC_DEVICE_ID
ret = i2c_smbus_read_i2c_block_data(client, PMBUS_IC_DEVICE_ID,
status = i2c_smbus_read_block_data(client, PMBUS_IC_DEVICE_ID, device_id);
ret = i2c_smbus_read_block_data(client, PMBUS_IC_DEVICE_ID, buf);
ret = i2c_smbus_read_block_data(client, PMBUS_IC_DEVICE_ID, buf);
ret = i2c_smbus_read_i2c_block_data(client, PMBUS_IC_DEVICE_ID,
ret = i2c_smbus_read_block_data(client, PMBUS_IC_DEVICE_ID, buf);
ret = i2c_smbus_read_block_data(client, PMBUS_IC_DEVICE_ID, buf);