What about this^ one? It is D-Link DWA-556 Xtreme with Atheros chipset.

Searching only give me this thread

But thread is old and people are complaining that new kernel broke compatibility with madWiFi drivers. So I am asking, is it compatible again? Will it work? Are madWiFi drivers integrated in mainline kernel? (Could not find information via Google)

If not, please tell me some that will and has open source drivers. I am not interested in warper for Windoze drivers. Just real deal