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authorAndrew Lunn <andrew@lunn.ch>2016-06-04 22:16:52 +0300
committerDavid S. Miller <davem@davemloft.net>2016-06-05 00:29:52 +0300
commit0e5760440842eee57ff573251e95289e2ee7b15f (patch)
treeb8599569a9211732b0d9abe3648829946d0618b2 /net/dsa
parent76f21b99004ef1f16be6184678f660eab911b8b8 (diff)
downloadlinux-0e5760440842eee57ff573251e95289e2ee7b15f.tar.xz
net: dsa: slave: chip data is optional, don't dereference NULL
The new binding does not make use of dsa_chip_data, a.k.a cd. When retrieving the size of the EEPROM attached to a switch, don't assume there is a cd attached to the switch structure. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
-rw-r--r--net/dsa/slave.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 152436cdab30..135a91706755 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -615,7 +615,7 @@ static int dsa_slave_get_eeprom_len(struct net_device *dev)
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
- if (ds->cd->eeprom_len)
+ if (ds->cd && ds->cd->eeprom_len)
return ds->cd->eeprom_len;
if (ds->drv->get_eeprom_len)