Where does the wl12xx gets its MAC Address?

I am trying to connect a wl1271 module to an external SDIO  interface (implemented in an FPGA)

I have implemented a driver for the SDIO interface (currently on a omap4430)

Right now, the wl12xx / mac80211 driver stop after wl1271_op_start( )

with an EADDRNOTAVAIL error    (indicating that the MAC address is not set)

so  wl1271_op_add_interface  never gets called and the interface never fully comes up

Note ( wl1271_register_hw is called wl1271_op_start)

Where is the MAC address supposed to be set so the mac80211 does not stop because the wl1271 does not have a MAC address????

thanks

Bernard