From: Felix Fietkau <nbd@xxxxxxxxxxx>
This patch has been added to the 3.18 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit 300f77c08ded96d33f492aaa02549103852f0c12 ]
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@xxxxxxxxxxxxxxx
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
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 4f18a6b..2cf5899 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -212,11 +212,13 @@ 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;
}
--
2.1.0
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