Patch "iwlwifi: mvm: free RX reorder buffer on restart" has been added to the 4.7-stable tree

Patch "iwlwifi: mvm: free RX reorder buffer on restart" has been added to the 4.7-stable tree

[gregkh]

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

    iwlwifi: mvm: free RX reorder buffer on restart

to the 4.7-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-free-rx-reorder-buffer-on-restart.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 60dec5233cd8651860e8010c953d116fb0f1ba86 Mon Sep 17 00:00:00 2001
From: Sara Sharon <sara.sharon@intel.com>
Date: Tue, 21 Jun 2016 14:14:08 +0300
Subject: iwlwifi: mvm: free RX reorder buffer on restart

From: Sara Sharon <sara.sharon@intel.com>

commit 60dec5233cd8651860e8010c953d116fb0f1ba86 upstream.

Restart flow zeroes the rx_ba_sessions counter. Mac80211 asks
driver to tear down of the session only afterwards, and as a
result driver didn't free the data. Fix it.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Fixes: 10b2b2019d81 ("iwlwifi: mvm: add infrastructure for tracking BA session in driver")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/wireless/intel/iwlwifi/mvm/sta.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
@@ -1374,11 +1374,12 @@ int iwl_mvm_sta_rx_agg(struct iwl_mvm *m
 		 */
 		WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
 		rcu_assign_pointer(mvm->baid_map[baid], baid_data);
-	} else if (mvm->rx_ba_sessions > 0) {
+	} else  {
 		u8 baid = mvm_sta->tid_to_baid[tid];
 
-		/* check that restart flow didn't zero the counter */
-		mvm->rx_ba_sessions--;
+		if (mvm->rx_ba_sessions > 0)
+			/* check that restart flow didn't zero the counter */
+			mvm->rx_ba_sessions--;
 		if (!iwl_mvm_has_new_rx_api(mvm))
 			return 0;
 


Patches currently in stable-queue which might be from sara.sharon@intel.com are

queue-4.7/iwlwifi-pcie-fix-access-to-scratch-buffer.patch
queue-4.7/iwlwifi-mvm-checksum-ipv6-fragmented-packet.patch
queue-4.7/iwlwifi-mvm-free-rx-reorder-buffer-on-restart.patch