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Commit d47844a0 authored by Felix Fietkau's avatar Felix Fietkau Committed by John W. Linville
Browse files

ath9k: fix timeout on stopping rx dma 



It seems that using ath9k_hw_stoppcurecv to stop rx dma is not enough.
When it's time to stop DMA, the PCU is still busy, so the rx enable
bit never clears.
Using ath9k_hw_abortpcurecv helps with getting rx stopped much faster,
with this change, I cannot reproduce the rx stop related WARN_ON anymore.

Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
Cc: stable@kernel.org
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 3bf30b56

drivers/net/wireless/ath/ath9k/recv.c

+1 −1
Original line number Diff line number Diff line
@@ -518,7 +518,7 @@ bool ath_stoprecv(struct ath_softc *sc) 
	bool stopped;



	spin_lock_bh(&sc->rx.rxbuflock);

	ath9k_hw_stoppcurecv(ah);

	ath9k_hw_abortpcurecv(ah);

	ath9k_hw_setrxfilter(ah, 0);

	stopped = ath9k_hw_stopdmarecv(ah);