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net: bcmgenet: correctly suspend and resume PHY device 

Make sure that we properly suspend and resume the PHY device when we
enter low power modes. We had two calls to bcmgenet_mii_reset() which
will issue a software-reset to the PHY without using the PHY library,
get rid of them since they are completely bogus and mess up with the PHY
library state. Make sure that we reset the PHY library cached values
(link, pause and duplex) to allow the link adjustment callback to be
invoked when needed.

Fixes: b6e978e504 ("net: bcmgenet: add suspend/resume callbacks")
Fixes: 1c1008c793 ("net: bcmgenet: add main driver file")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-08-11 14:50:43 -07:00 committed by David S. Miller
parent e4a60a93c4
commit cc013fb488
1 changed files with 11 additions and 2 deletions
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13
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -739,7 +739,6 @@ static void bcmgenet_power_down(struct bcmgenet_priv *priv,
case GENET_POWER_PASSIVE:
/* Power down LED */
bcmgenet_mii_reset(priv->dev);
if (priv->hw_params->flags & GENET_HAS_EXT) {
reg = bcmgenet_ext_readl(priv, EXT_EXT_PWR_MGMT);
reg |= (EXT_PWR_DOWN_PHY |
@ -779,7 +778,9 @@ static void bcmgenet_power_up(struct bcmgenet_priv *priv,
}
bcmgenet_ext_writel(priv, reg, EXT_EXT_PWR_MGMT);
bcmgenet_mii_reset(priv->dev);
if (mode == GENET_POWER_PASSIVE)
bcmgenet_mii_reset(priv->dev);
}
/* ioctl handle special commands that are not present in ethtool. */
@ -2164,6 +2165,10 @@ static void bcmgenet_netif_stop(struct net_device *dev)
* disabled no new work will be scheduled.
*/
cancel_work_sync(&priv->bcmgenet_irq_work);
priv->old_pause = -1;
priv->old_link = -1;
priv->old_duplex = -1;
}
static int bcmgenet_close(struct net_device *dev)
@ -2611,6 +2616,8 @@ static int bcmgenet_suspend(struct device *d)
bcmgenet_netif_stop(dev);
phy_suspend(priv->phydev);
netif_device_detach(dev);
/* Disable MAC receive */
@ -2693,6 +2700,8 @@ static int bcmgenet_resume(struct device *d)
netif_device_attach(dev);
phy_resume(priv->phydev);
bcmgenet_netif_start(dev);
return 0;