From: Florian Fainelli <f.fainelli@gmail.com>
Date: Thu, 5 Jun 2014 17:22:15 +0000 (-0700)
Subject: net: systemport: fix transmit locking scheme
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~36^2~60^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8498088cf466483093c9a29121e3833e7923287;p=pandora-kernel.git

net: systemport: fix transmit locking scheme

Our transmit locking scheme did not account for the TX ring full
interrupt. If a TX ring full interrupt fires while we are attempting to
transmit, we will cause a deadlock to occur. Fix this by making sure
that we properly disable interrupts while acquiring the spinlock.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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