From: Roland Stigge <stigge@antcom.de>
Date: Mon, 1 Sep 2014 11:46:46 +0000 (+0200)
Subject: net: lpc_eth: Fix crash on ip link up
X-Git-Tag: fixes-for-v3.18-merge-window~162^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aff88a0695976596b39dcfa65da4896c802c938d;p=pandora-kernel.git

net: lpc_eth: Fix crash on ip link up

When a link is already up, the following sequence makes the kernel
block completely:

  ip link set dev eth0 down
  ip link set dev eth0 up

This is because on suspended phy, the following lines

  __lpc_eth_reset(pldat);
  __lpc_eth_init(pldat);

make the LPC ethernet core block (see LPC32x0 manual). The PHY needs to be
(re-)activated low-level first.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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