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net: lpc_eth: Fix crash on ip link up
authorRoland Stigge <stigge@antcom.de>
Mon, 1 Sep 2014 11:46:46 +0000 (13:46 +0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 2 Sep 2014 20:21:55 +0000 (13:21 -0700)
commitaff88a0695976596b39dcfa65da4896c802c938d
tree901808d7641ffc5c2b94997945cba1b5fc4748b6tree | snapshot (tar.gz zip)
parent0486a063b1ffce4f37ef80970689c64bf7b99e98commit | diff
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>
drivers/net/ethernet/nxp/lpc_eth.c diff | blob | blame | history