From 300f77c08ded96d33f492aaa02549103852f0c12 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Tue, 2 Jun 2015 10:38:32 +0200 Subject: [PATCH] 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 Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath9k/main.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index d285e3a89853..cfd45cb8ccfc 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -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; } -- 2.30.2