diff options
| author | Roland Stigge <stigge@antcom.de> | 2014-09-01 13:46:46 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-02 22:21:55 +0200 |
| commit | aff88a0695976596b39dcfa65da4896c802c938d (patch) | |
| tree | 901808d7641ffc5c2b94997945cba1b5fc4748b6 | |
| parent | tg3: prevent ifup/ifdown during PCI error recovery (diff) | |
| download | linux-aff88a0695976596b39dcfa65da4896c802c938d.tar.xz linux-aff88a0695976596b39dcfa65da4896c802c938d.zip | |
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>
| -rw-r--r-- | drivers/net/ethernet/nxp/lpc_eth.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c index 8706c0dbd0c3..a44a03c45014 100644 --- a/drivers/net/ethernet/nxp/lpc_eth.c +++ b/drivers/net/ethernet/nxp/lpc_eth.c @@ -1220,6 +1220,9 @@ static int lpc_eth_open(struct net_device *ndev) __lpc_eth_clock_enable(pldat, true); + /* Suspended PHY makes LPC ethernet core block, so resume now */ + phy_resume(pldat->phy_dev); + /* Reset and initialize */ __lpc_eth_reset(pldat); __lpc_eth_init(pldat); |