linux-kernel - [PATCH 4.2 185/258] ath10k: wake up offchannel queue properly

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Date:	Sat, 17 Oct 2015 18:58:18 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Michal Kazior <michal.kazior@...to.com>,
	Kalle Valo <kvalo@....qualcomm.com>
Subject: [PATCH 4.2 185/258] ath10k: wake up offchannel queue properly

4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michal Kazior <michal.kazior@...to.com>

commit 3a73d1a6f22bf13044056543ad43b2a304ee0022 upstream.

Once HTT Tx queue got full offchannel queue was
stopped and never woken up again. This broke, e.g.
P2P. This could be reproduced after running a lot
of traffic enough to saturate 100% of the driver
Tx queue and then trying to send offchannel
traffic.

Fixes: 96d828d45e16 ("ath10k: rework tx queue locking")
Signed-off-by: Michal Kazior <michal.kazior@...to.com>
Signed-off-by: Kalle Valo <kvalo@....qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/wireless/ath/ath10k/mac.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3003,6 +3003,8 @@ void ath10k_mac_tx_unlock(struct ath10k
 						   IEEE80211_IFACE_ITER_RESUME_ALL,
 						   ath10k_mac_tx_unlock_iter,
 						   ar);
+
+	ieee80211_wake_queue(ar->hw, ar->hw->offchannel_tx_hw_queue);
 }
 
 void ath10k_mac_vif_tx_lock(struct ath10k_vif *arvif, int reason)


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