This is a note to let you know that I've just added the patch titled ath10k: wake up queue upon vif creation to the 4.2-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: ath10k-wake-up-queue-upon-vif-creation.patch and it can be found in the queue-4.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 6d2d51ecfff13f5f6ffc476dccf4d5b2668072eb Mon Sep 17 00:00:00 2001 From: Michal Kazior <michal.kazior@xxxxxxxxx> Date: Fri, 7 Aug 2015 09:08:21 +0200 Subject: ath10k: wake up queue upon vif creation From: Michal Kazior <michal.kazior@xxxxxxxxx> commit 6d2d51ecfff13f5f6ffc476dccf4d5b2668072eb upstream. Vif's vdev_id is used as queue number. However due to the tx pausing design in ath10k it was possible for a new interface to be created with its tx queue stopped (via ieee80211_stop_queues). This could in turn leave the interface inoperable until ath10k_mac_tx_unlock() was called. This problem only affected multi-vif scenarios when new interfaces were created some time later after other interfaces have been running for some time and had Tx queue full at some point prior. Possible manifestation of the bug was authentication timeout for a client vif. Fixes: 96d828d45e16 ("ath10k: rework tx queue locking") Signed-off-by: Michal Kazior <michal.kazior@xxxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/wireless/ath/ath10k/mac.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -4283,6 +4283,11 @@ static int ath10k_add_interface(struct i } } + spin_lock_bh(&ar->htt.tx_lock); + if (!ar->tx_paused) + ieee80211_wake_queue(ar->hw, arvif->vdev_id); + spin_unlock_bh(&ar->htt.tx_lock); + mutex_unlock(&ar->conf_mutex); return 0; Patches currently in stable-queue which might be from michal.kazior@xxxxxxxxx are queue-4.2/ath10k-fix-dma_mapping_error-handling.patch queue-4.2/ath10k-wake-up-queue-upon-vif-creation.patch queue-4.2/ath10k-fix-peer-limit-enforcement.patch queue-4.2/ath10k-reject-11b-tx-fragmentation-configuration.patch queue-4.2/ath10k-fix-per-vif-queue-locking.patch queue-4.2/ath10k-wake-up-offchannel-queue-properly.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html