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net/fec: fix pm to survive to suspend/resume 

* in the actual driver, calling fec_stop and fec_enet_init doesn't
allow to have a working network interface at resume (where a
ifconfig down and up is required to recover the interface)
* by using fec_enet_close and fec_enet_open, this patch solves this
problem and handle the case where the link changed between suspend
and resume
* this patch also disable clock at suspend and reenable it at resume

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Eric Bénard 2010-06-02 06:13:34 -07:00 committed by David S. Miller
parent b1011b375b
commit e3fe8558c7
1 changed files with 8 additions and 8 deletions
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16
drivers/net/fec.c
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@ -1373,10 +1373,9 @@ fec_suspend(struct platform_device *dev, pm_message_t state)
if (ndev) {
fep = netdev_priv(ndev);
if (netif_running(ndev)) {
netif_device_detach(ndev);
fec_stop(ndev);
}
if (netif_running(ndev))
fec_enet_close(ndev);
clk_disable(fep->clk);
}
return 0;
}
@ -1385,12 +1384,13 @@ static int
fec_resume(struct platform_device *dev)
{
struct net_device *ndev = platform_get_drvdata(dev);
struct fec_enet_private *fep;
if (ndev) {
if (netif_running(ndev)) {
fec_enet_init(ndev, 0);
netif_device_attach(ndev);
}
fep = netdev_priv(ndev);
clk_enable(fep->clk);
if (netif_running(ndev))
fec_enet_open(ndev);
}
return 0;
}