Commit 300f77c0 authored Jun 02, 2015 by Felix Fietkau Committed by Kalle Valo Jun 08, 2015

ath9k: fix DMA stop sequence for AR9003+



AR93xx and newer needs to stop rx before tx to avoid getting the DMA
engine or MAC into a stuck state.
This should reduce/fix the occurence of "Failed to stop Tx DMA" logspam.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

parent f2a800f5

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

+7 −5

Original line number	Diff line number	Diff line
		@@ -216,11 +216,13 @@ static bool ath_prepare_reset(struct ath_softc *sc)
		ath_stop_ani(sc);
		ath9k_hw_disable_interrupts(ah);

		if (!ath_drain_all_txq(sc))
		ret = false;

		if (!ath_stoprecv(sc))
		ret = false;
		if (AR_SREV_9300_20_OR_LATER(ah)) {
		ret &= ath_stoprecv(sc);
		ret &= ath_drain_all_txq(sc);
		} else {
		ret &= ath_drain_all_txq(sc);
		ret &= ath_stoprecv(sc);
		}

		return ret;
		}

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