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net: dsa: PHY device is mandatory for EEE

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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