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cw1200: Fix spurious BUG_ON() trigger when starting AP mode.

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There's an underlying race condition with the unjoin_work() call that is
sometimes triggered depending on scheduling order and the phase of the
moon.  This doesn't fix the race condition, but it does remove the
ill-advised BUG_ON() call in an easily-recoverable situation.

Signed-off-by: Solomon Peachy <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
This commit is contained in:
Solomon Peachy 2013-08-02 19:57:40 -04:00 • committed by John W. Linville
commit 5a6e0cf707
1 changed files with 2 additions and 5 deletions
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7
drivers/net/wireless/cw1200/sta.c
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@ -1406,11 +1406,8 @@ static void cw1200_do_unjoin(struct cw1200_common *priv)
if (!priv->join_status)
goto done;
if (priv->join_status > CW1200_JOIN_STATUS_IBSS) {
wiphy_err(priv->hw->wiphy, "Unexpected: join status: %d\n",
priv->join_status);
BUG_ON(1);
}
if (priv->join_status == CW1200_JOIN_STATUS_AP)
goto done;
cancel_work_sync(&priv->update_filtering_work);
cancel_work_sync(&priv->set_beacon_wakeup_period_work);