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net: dsa: PHY device is mandatory for EEE 

The port's PHY and MAC are both implied in EEE. The current code does
not call the PHY operations if the related device is NULL. Change that
by returning -ENODEV if there's no PHY device attached to the interface.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-08-01 16:32:31 -04:00 committed by David S. Miller
parent 13e6be2d22
commit 7b9cc73843
1 changed files with 10 additions and 8 deletions
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18
net/dsa/slave.c
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@ -648,6 +648,10 @@ static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
struct dsa_switch *ds = p->dp->ds;
int ret;
/* Port's PHY and MAC both need to be EEE capable */
if (!p->phy)
return -ENODEV;
if (!ds->ops->set_eee)
return -EOPNOTSUPP;
@ -655,10 +659,7 @@ static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
if (ret)
return ret;
if (p->phy)
ret = phy_ethtool_set_eee(p->phy, e);
return ret;
return phy_ethtool_set_eee(p->phy, e);
}
static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
@ -667,6 +668,10 @@ static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
struct dsa_switch *ds = p->dp->ds;
int ret;
/* Port's PHY and MAC both need to be EEE capable */
if (!p->phy)
return -ENODEV;
if (!ds->ops->get_eee)
return -EOPNOTSUPP;
@ -674,10 +679,7 @@ static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
if (ret)
return ret;
if (p->phy)
ret = phy_ethtool_get_eee(p->phy, e);
return ret;
return phy_ethtool_get_eee(p->phy, e);
}
#ifdef CONFIG_NET_POLL_CONTROLLER