From: Maxime Bizon <mbizon@freebox.fr>
Date: Sat, 20 Oct 2012 14:53:40 +0000 (+0000)
Subject: e1000: fix concurrent accesses to PHY from watchdog and ethtool
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~45^2~480^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac56558fc6ed4943ba4d9dd0046437d4fb05e8b6;p=pandora-kernel.git

e1000: fix concurrent accesses to PHY from watchdog and ethtool

The e1000 driver currently does not protect concurrent accesses to the PHY
from both the ethtool callbacks, and from the e1000_watchdog function. This
patchs adds a new spinlock which is used by e1000_{read,write}_phy_reg in
order to serialize concurrent accesses to the PHY.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

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