From: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Date: Thu, 16 Apr 2015 16:56:03 +0000 (+0100)
Subject: stmmac: fix oops on rmmod after assigning ip addr
X-Git-Tag: omap-for-v4.1/fixes-rc1~108^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e743471f8d9c6ad00eb10a6d1e05803231e1de83;p=pandora-kernel.git

stmmac: fix oops on rmmod after assigning ip addr

An oops exists in the flow of stmmac_release().
phy_ethtool_get_wol() depends on phydev->drv.
phydev->drv will be null after stmmac_mdio_unreg() completes.

Steps to reproduce on Quark X1000:

1. ifconfig eth0 192.168.0.1
2. rmmod stmmac_pci

To fix this stmmac_mdio_unreg() should be run after unregister_netdev().

Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Reported-by: Dan O'Donovan <dan.odonovan@emutex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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