From: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Date: Thu, 11 Jul 2013 15:03:41 +0000 (+0300)
Subject: wil6210: fix subtle race in wil_tx_vring
X-Git-Tag: v3.12-rc1~132^2~297^2^2~101
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6cdadd4dc7621e47739a84548e70713e157fa850;p=pandora-kernel.git

wil6210: fix subtle race in wil_tx_vring

Finish all SW context modifications prior to notifying hardware

It used to be race condition: if HW finish Tx and issue Tx completion IRQ very fast,
prior to SW context update in wil_tx_vring, Tx completion will mis-handle descriptor, as
SW part will have no skb pointer stored.

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