From: Rob Herring <rob.herring@calxeda.com>
Date: Fri, 30 Aug 2013 21:49:21 +0000 (-0500)
Subject: net: calxedaxgmac: fix race between xgmac_tx_complete and xgmac_tx_err
X-Git-Tag: v3.12-rc1~132^2~1^2~14^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8746f671ef04114ab25f5a35ec6219efbdf3703e;p=pandora-kernel.git

net: calxedaxgmac: fix race between xgmac_tx_complete and xgmac_tx_err

It is possible for the xgmac_tx_complete to run concurrently with
xgmac_tx_err since there are no locks. Fix this by moving the tx
error handling to a workqueue so we can disable napi while we reset
the transmitter.

Reported-by: Andreas Herrmann <andreas.herrmann@calxeda.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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