Hi I have crash in ieee80211_wake_txqs: https://imgur.com/a/VIrU9yK when starting mt76x0u driver. Not sure if this is beacuse the driver do not initalize sta->txq properly, but reverting the commit 21a5d4c3a45ca608477a083096cfbce76e449a0c Author: Manikanta Pubbisetty <mpubbise@xxxxxxxxxxxxxx> Date: Wed Jul 11 00:12:53 2018 +0530 mac80211: add stop/start logic for software TXQs make crash gone. gdb pointed at 'if (ac != txq->ac)' line in the code: for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { struct ieee80211_txq *txq = sta->sta.txq[i]; txqi = to_txq_info(txq); if (ac != txq->ac) continue; Looks txq is NULL and referencing txq->ac crashes. Thanks Stanislaw