From 42646ba046e99d185bbf02373b733e9c5009eac5 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 27 Feb 2014 14:36:19 +0100
Subject: [PATCH] iwlwifi: pcie: fix TX queue locking

When updating the write pointer, the TX queue should be locked
to get consistent state, fix that in the interrupt handler.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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