[RFT 4/4] ath10k: improve tx flushing

[Kalle Valo]

Michal Kazior <michal.kazior at tieto.com> writes:

> Flushing was prone to timeouts when powersaving
> clients were involved that went missing while
> asleep. The common culprit was NullFunc frame
> being stuck in FW/HW queues.
>
> Introduce a two-pass flushing with WMI flush
> commands interleaved to force frame drops if
> necessary. This allows for a decreased flush
> timeout time and should get rid of some warnings.
>
> Signed-off-by: Michal Kazior <michal.kazior at tieto.com>

With this patch I see a new checkpatch warning:

drivers/net/wireless/ath/ath10k/mac.c:3785: WARNING: line over 80 characters

-- 
Kalle Valo