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net: mscc: ocelot: fix NULL pointer on LAG slave removal

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[ Upstream commit 3b3eed8eec ]

lag_upper_info may be NULL on slave removal.

Fixes: dc96ee3730 ("net: mscc: ocelot: add bonding support")
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Claudiu Manoil
2019-11-05 23:50:14 +02:00
committed by Greg Kroah-Hartman
parent 1cfc967ef5
commit 05b761423d
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/mscc/ocelot.c
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@@ -1550,7 +1550,8 @@ static int ocelot_netdevice_event(struct notifier_block *unused,
struct netdev_lag_upper_info *lag_upper_info = info->upper_info;
struct netlink_ext_ack *extack;
if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
if (lag_upper_info &&
lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
extack = netdev_notifier_info_to_extack(&info->info);
NL_SET_ERR_MSG_MOD(extack, "LAG device using unsupported Tx type");