Comment 18 for bug 659143

Doesn't seem to fix the RT3090 here. If I force modprobe to load the rt2800pci or rt2x00pci driver, the card will scan for networks quite happily, but won't establish a connection (WPA encrypted, pre-shared password mode).

If I go back to blacklisting rt2800pci et al, then the (insanely buggy) rt2860sta driver loads, and the card works (more or less) fine, aside from occasionally falling over after a hibernate or suspend cycle.

lspci -v:
02:00.0 Network controller: RaLink RT3090 Wireless 802.11n 1T/1R PCIe
        Subsystem: Micro-Star International Co., Ltd. Device 6891
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at feaf0000 (32-bit, non-prefetchable) [size=64K]
        Capabilities: <access denied>
        Kernel driver in use: rt2860
        Kernel modules: rt2800pci, rt2860sta