I'm considering using the WUSB600N, which contains an rt2800, in a product. The vendor driver (rt2870sta) has some disadvantages, so I checked here for any mainline-bound work. I see from various posts that support for the rt2800 chips is not ready, but may be under development. I may be in a position to contribute to this development. Is anybody actively working on that? Is there any source that I can pull?
As mentioned in the topics your refer to, I am working on the rt2800 drivers.
You can find the code in rt2x00.git the experimental branch