at76c503a, Belkin f5d6050 and Regulatory Domain: Japan

I am using the at76c503a driver for some atmel based wifi usb adapters.

I am trying to get the adapters to work on channel 14 (Japan). The
problem is that the driver IDs it as a US model, and only allows it
to go to channel 11.

I tried changing the FCC channel definition to match that of Japan,
(0x3fff) but the adapter then won't come up at all.

I get a message repeated every second or so:

join_bss completed with 3

and iwconfig shows that it has failed to associate with the access point.

How does the driver determine the reg_domain? Is this something pulled
from the driver USB info? MAC address? How can I get this adapter to
work with the channels I need?

I'm guessing it has something to do with the firmware being loaded....
Is that right?

Thanks,

--Yan

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