On Tue, 2009-11-17 at 18:48 +0200, Kalle Valo wrote:
> From: Vidhya Govindan <vidhya.govindan@xxxxxxxxx>
>
> Lockdep shows that there is a deadlock when calling ieee80211_rssi_changed()
> under wl->mutex. Fix it by releasing mutex before calling mac80211 functions.
> This patch is based on Work-In-Progress patch sent by Kalle Valo.
> if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID && wl->psm) {
> wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");
> + /* need to unlock mutex to avoid deadlocking with rtnl */
> + mutex_unlock(&wl->mutex);
>
> /* indicate to the stack, that beacons have been lost */
> ieee80211_beacon_loss(wl->vif);
> + mutex_lock(&wl->mutex);
That can't be true, ieee80211_beacon_loss() only calls
ieee80211_queue_work().
johannes
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