[PATCH net] net: dsa: Fix NULL checking in dsa_slave_set_eee()

[Dan Carpenter]

This function can't succeed if dp->pl is NULL.  It will Oops inside the
call to return phylink_ethtool_get_eee(dp->pl, e);

Fixes: 1be52e97ed3e ("dsa: slave: eee: Allow ports to use phylink")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
 net/dsa/slave.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 91de3a663226..9384f95e04d5 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -639,7 +639,7 @@ static int dsa_slave_set_eee(struct net_device *dev, struct 
ethtool_eee *e)
        int ret;
 
        /* Port's PHY and MAC both need to be EEE capable */
-       if (!dev->phydev && !dp->pl)
+       if (!dev->phydev || !dp->pl)
                return -ENODEV;
 
        if (!ds->ops->set_mac_eee)
@@ -659,7 +659,7 @@ static int dsa_slave_get_eee(struct net_device *dev, struct 
ethtool_eee *e)
        int ret;
 
        /* Port's PHY and MAC both need to be EEE capable */
-       if (!dev->phydev && !dp->pl)
+       if (!dev->phydev || !dp->pl)
                return -ENODEV;
 
        if (!ds->ops->get_mac_eee)
-- 
2.17.1