From 0253429b31c2286d1c4eddc9762fa0d9f64f49b3 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Tue, 2 Jun 2015 10:38:32 +0200
Subject: [PATCH] ath9k: fix DMA stop sequence for AR9003+

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>
[bwh: Backported to 3.2:
 - Also move initialisation of ret to match upstream
 - ath_drain_all_txq() takes a second parameter]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
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