rt3070 wifi chipset integration on x86 Android

Porting rt3070 following http://blog.linuxconsulting.ro/2010/04/porting-wifi-drivers-to-android.html
Status and ideas is sorted out below:

• rt2870sta is loaded for rt3070 chipset when kernel starts.
• rt2870sta is loaded again when android wifi HAL starts.
• Disable rt2870sta in kernel configuration and make android wifi HAL load rt2800usb, rt2800usb works fine for rt3070 chipset.
• Perhaps rt2870sta works fine if it is just loaded once, how to make rt2870sta loaded just once?
• There is password remembering issue on rt2800usb.Wifi can now automatically reconnect to AP, providing wpa_supplicant.conf is writable.
• to be listed...