REGRESSION: crash in wireless-testing smoketest

["Arend van Spriel" <arend@broadcom.com>]

Hi Johannes,

For the brcm80211 drivers we have nightly tests running on both internal
repo and wireless-testing. Last nights test failed for wireless-testing
and it occurred during AUTH/ASSOC. I bisected the issue to following commit:

commit 7852e36186d2a1983c215836d7e3d7b8927c930d
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Fri Jan 20 13:55:24 2012 +0100

    mac80211: remove dummy STA support

    The dummy STA support was added because I didn't
    want to change the driver API at the time. Now
    that we have state transitions triggering station
    add/remove in the driver, we only call add once a
    station reaches ASSOCIATED, so we can remove the
    dummy station stuff again.

    While at it, tighten the RX check and accept only
    port control (EAP) frames from the AP station if
    it's not associated yet -- in other cases there's
    no race.

    Signed-off-by: Johannes Berg <johannes.berg@intel.com>
    Signed-off-by: John W. Linville <linville@tuxdriver.com>

The brcmsmac driver does not provide a sta_remove callback. I suspect
that is causing the issue here. Can you confirm?

Gr. AvS