diff options
| author | Julian Wiedmann <jwi@linux.vnet.ibm.com> | 2017-05-10 19:07:53 +0200 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2017-06-24 23:05:16 -0400 |
| commit | 8404b686a33c3e8a557df5b80b04517cb90d96f5 (patch) | |
| tree | ec149626c16459fa9ad8189a9ce4da4f44f13f5b /drivers/s390 | |
| parent | 89b9ca1dd7d051ab9cef9df7d0bb32e01e7d4106 (diff) | |
s390/qeth: avoid null pointer dereference on OSN
[ Upstream commit 25e2c341e7818a394da9abc403716278ee646014 ]
Access card->dev only after checking whether's its valid.
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/net/qeth_l2_main.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index d725fd8063dd..743673b8b046 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -961,7 +961,6 @@ static int qeth_l2_setup_netdev(struct qeth_card *card) case QETH_CARD_TYPE_OSN: card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup); - card->dev->flags |= IFF_NOARP; break; default: card->dev = alloc_etherdev(0); @@ -974,9 +973,12 @@ static int qeth_l2_setup_netdev(struct qeth_card *card) card->dev->watchdog_timeo = QETH_TX_TIMEOUT; card->dev->mtu = card->info.initial_mtu; card->dev->netdev_ops = &qeth_l2_netdev_ops; - card->dev->ethtool_ops = - (card->info.type != QETH_CARD_TYPE_OSN) ? - &qeth_l2_ethtool_ops : &qeth_l2_osn_ops; + if (card->info.type == QETH_CARD_TYPE_OSN) { + card->dev->ethtool_ops = &qeth_l2_osn_ops; + card->dev->flags |= IFF_NOARP; + } else { + card->dev->ethtool_ops = &qeth_l2_ethtool_ops; + } card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; card->info.broadcast_capable = 1; qeth_l2_request_initial_mac(card); |