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| Started by | Kamal Mostafa <kamal@canonical.com> |
|---|---|
| First post | 2015-07-16 04:10 +0200 |
| Last post | 2015-07-16 04:10 +0200 |
| Articles | 1 — 1 participant |
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[PATCH 3.19.y-ckt 087/251] ath9k: fix DMA stop sequence for AR9003+ Kamal Mostafa <kamal@canonical.com> - 2015-07-16 04:10 +0200
| From | Kamal Mostafa <kamal@canonical.com> |
|---|---|
| Date | 2015-07-16 04:10 +0200 |
| Subject | [PATCH 3.19.y-ckt 087/251] ath9k: fix DMA stop sequence for AR9003+ |
| Message-ID | <pMGMA-11H-75@gated-at.bofh.it> |
3.19.8-ckt4 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Felix Fietkau <nbd@openwrt.org>
commit 300f77c08ded96d33f492aaa02549103852f0c12 upstream.
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.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
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 62b0bf4..cea94dbf 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;
}
--
1.9.1
--
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