[3.19.y-ckt stable] Patch "ath10k: clear htt.freq" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    ath10k: clear htt.freq

to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue

This patch is scheduled to be released in version 3.19.y-ckt4.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From cb544191777f9f2f36b542266c2a308748f91e5d Mon Sep 17 00:00:00 2001
From: Michal Kazior <michal.kazior at tieto.com>
Date: Mon, 30 Mar 2015 09:51:51 +0300
Subject: ath10k: clear htt.freq

commit 6fcafef7363bec35ddf148abae6e879e27771eb0 upstream.

If htt.freq isn't cleared and contains garbage fw
may discard tx packets. Prevent this from
happening by clearing htt.freq properly.

Possible manifestation of the problem could be not
being able to send auth request/response frames on
firmware with HTT >= 3.4 (when freq param was
introduced), e.g. on qca6174.

Fixes: 8d6d36243610 ("ath10k: fix offchan reliability")
Signed-off-by: Michal Kazior <michal.kazior at tieto.com>
Signed-off-by: Kalle Valo <kvalo at qca.qualcomm.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/net/wireless/ath/ath10k/mac.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index c400567..05597cb 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -2367,6 +2367,7 @@ static void ath10k_tx(struct ieee80211_hw *hw,
 		ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");

 	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
+	ATH10K_SKB_CB(skb)->htt.freq = 0;
 	ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
 	ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);

--
1.9.1