i2c adapter scan device issue

[Lanttor <lanttor.guo-KZfg59tc24xl57MIdRCFDg@public.gmane.org>]

Hi,

I have a confused problem as follows:

I instantiate a i2c device with function i2c_register_board_info();
This function pre-declare the I2C devices which live on this bus and the
call of it
is before the real i2c bus driver loaded.

In i2c_register_board_info(),
__i2c_first_dynamic_bus_num = busnum +1;

My i2c bus driver use i2c_add_adapter() to register adapter, In
i2c_add_adapter(),
res = idr_get_new_above(&i2c_adapter_idr, adapter,
                                __i2c_first_dynamic_bus_num , &id);

adapter->nr = id;

That means if I pass busnum 0 to i2c_register_board_info(), but my i2c
adapter will get
busnum 1 and so it can't scan pre-declared i2c devices.
In fact, I only have one i2c adapter.

It seems I can't use i2c_add_adapter(), instead of using
i2c_add_numbered_adapter, right?

Best Regards,
Lanttor