34 lines
881 B
Diff
34 lines
881 B
Diff
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From: Felix Fietkau <nbd@openwrt.org>
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Date: Tue, 2 Jun 2015 10:35:46 +0200
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Subject: [PATCH] ath9k: fix DMA stop sequence for AR9003+
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AR93xx and newer needs to stop rx before tx to avoid getting the DMA
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engine or MAC into a stuck state.
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This should reduce/fix the occurence of "Failed to stop Tx DMA" logspam.
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Cc: stable@vger.kernel.org
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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---
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -216,11 +216,13 @@ static bool ath_prepare_reset(struct ath
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ath_stop_ani(sc);
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ath9k_hw_disable_interrupts(ah);
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- if (!ath_drain_all_txq(sc))
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- ret = false;
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-
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- if (!ath_stoprecv(sc))
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- ret = false;
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+ if (AR_SREV_9300_20_OR_LATER(ah)) {
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+ ret &= ath_stoprecv(sc);
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+ ret &= ath_drain_all_txq(sc);
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+ } else {
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+ ret &= ath_drain_all_txq(sc);
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+ ret &= ath_stoprecv(sc);
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+ }
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return ret;
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}
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