From: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Date: Wed, 10 Sep 2014 13:34:42 +0000 (+0300)
Subject: wil6210: fix race condition between BACK event and Rx data
X-Git-Tag: omap-for-v3.19/prcm-cleanup~141^2~144^2~66
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ec81b5adf42e02560b3b05a0c8897451cd3d8b29;p=pandora-kernel.git

wil6210: fix race condition between BACK event and Rx data

While handling Rx packet, BACK event arrives and frees tid_ampdu_rx array.
This causes kernel panic while accessing already freed spinlock

The fix is to remove tid_ampdu_rx[]'s spinlock and instead use single
sta's spinlock to guard the whole tid_ampdu_rx array.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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