I2C_DEV_ADD_REQ_FIELD_NAME
req->add_need &= ~I2C_DEV_ADD_REQ_FIELD_NAME;
if ((req->add_need & I2C_DEV_ADD_REQ_FIELD_NAME) != 0) {
req->add_need = I2C_DEV_ADD_REQ_FIELD_NAME | I2C_DEV_ADD_REQ_FIELD_ADDR;