From: Dan Carpenter <dan.carpenter@oracle.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH net] net: dsa: Fix NULL checking in dsa_slave_set_eee()
Date: Wed, 6 Feb 2019 18:35:15 +0300 [thread overview]
Message-ID: <20190206153514.GA11033@kadam> (raw)
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.carpenter@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
next reply other threads:[~2019-02-06 15:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-06 15:35 Dan Carpenter [this message]
2019-02-06 17:42 ` [PATCH net] net: dsa: Fix NULL checking in dsa_slave_set_eee() Florian Fainelli
2019-02-06 17:48 ` Vivien Didelot
2019-02-06 22:03 ` David Miller
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