From: Simon Guinot <sguinot@lacie.com>
Date: Mon, 13 Sep 2010 22:12:01 +0000 (+0000)
Subject: phylib: fix PAL state machine restart on resume
X-Git-Tag: v2.6.36-rc5~12^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fddd91016d16277a32727ad272cf2edd3d309c90;p=pandora-kernel.git

phylib: fix PAL state machine restart on resume

On resume, before starting the PAL state machine, check if the
adjust_link() method is well supplied. If not, this would lead to a
NULL pointer dereference in the phy_state_machine() function.

This scenario can happen if the Ethernet driver call manually the PHY
functions instead of using the PAL state machine. The mv643xx_eth driver
is a such example.

Signed-off-by: Simon Guinot <sguinot@lacie.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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