Felix Fietkau <nbd@xxxxxxxx> writes:
> Currently there is no way for the driver to signal to mac80211 that it should
> schedule a TXQ even if there are no packets on the mac80211 part of that queue.
> This is problematic if the driver has an internal retry queue to deal with
> software A-MPDU retry.
>
> This patch changes the behavior of ieee80211_schedule_txq to always schedule
> the queue, as its only user (ath9k) seems to expect such behavior already:
> it calls this function on tx status and on powersave wakeup whenever its
> internal retry queue is not empty.
>
> Also add an extra argument to ieee80211_return_txq to get the same behavior.
>
> This fixes an issue on ath9k where tx queues with packets to retry (and no
> new packets in mac80211) would not get serviced.
>
> Fixes: 89cea7493a346 ("ath9k: Switch to mac80211 TXQ scheduling and airtime APIs")
> Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
