This is a note to let you know that I've just added the patch titled
ath9k: fix DMA stop sequence for AR9003+
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ath9k-fix-dma-stop-sequence-for-ar9003.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 300f77c08ded96d33f492aaa02549103852f0c12 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@xxxxxxxxxxx>
Date: Tue, 2 Jun 2015 10:38:32 +0200
Subject: ath9k: fix DMA stop sequence for AR9003+
From: Felix Fietkau <nbd@xxxxxxxxxxx>
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@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/main.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -205,11 +205,13 @@ static bool ath_prepare_reset(struct ath
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;
}
Patches currently in stable-queue which might be from nbd@xxxxxxxxxxx are
queue-3.14/ath9k-fix-dma-stop-sequence-for-ar9003.patch
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