Patch "iwlwifi: mvm: call a different txq_enable function" has been added to the 4.8-stable tree

This is a note to let you know that I've just added the patch titled

iwlwifi: mvm: call a different txq_enable function

to the 4.8-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:
iwlwifi-mvm-call-a-different-txq_enable-function.patch
and it can be found in the queue-4.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Sara Sharon <[email protected]>
Date: Thu, 30 Jun 2016 16:14:02 +0300
Subject: iwlwifi: mvm: call a different txq_enable function

From: Sara Sharon <[email protected]>

commit ca3b9c6b6d4db9a8ba5fc8b95664e75468c59f9f upstream.

Since the SCD_QUEUE_CFG command was introduced the driver calls iwl_trans_txq_enable_cfg() with a NULL for scd_cfg parameter.
This makes the transport avoid writing to the SCD pointers, since it can cause races with firmware, which is also accessing the registers.
The transport only updates the write pointer in that case. Fix a wrong call to iwl_trans_txq_enable() which caused a scd_cfg parameter to be sent to transport, resulting with an access to SCD registers.

---
 drivers/net/wireless/intel/iwlwifi/mvm/sta.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

@@ -576,9 +576,7 @@ static int iwl_mvm_scd_queue_redirect(st
 			ret);
 
 	/* Make sure the SCD wrptr is correctly set before reconfiguring */
-	iwl_trans_txq_enable(mvm->trans, queue, iwl_mvm_ac_to_tx_fifo[ac],
-			     cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF,
-			     ssn, wdg_timeout);
+	iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
 
 	/* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.8/iwlwifi-mvm-support-bar-in-reorder-buffer.patch queue-4.8/iwlwifi-mvm-disable-p2p-queue-on-mac-context-release.patch queue-4.8/iwlwifi-mvm-call-a-different-txq_enable-function.patch