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net/ibmvnic: Fix RTNL deadlock during device reset

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Commit a5681e20b5 ("net/ibmnvic: Fix deadlock problem
in reset") made the change to hold the RTNL lock during
driver reset but still calls netdev_notify_peers, which
results in a deadlock. Instead, use call_netdevice_notifiers,
which is functionally the same except that it does not
take the RTNL lock again.

Fixes: a5681e20b5 ("net/ibmnvic: Fix deadlock problem in reset")
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Falcon 2018-11-30 10:59:08 -06:00 committed by David S. Miller
parent e3f787189e
commit 986103e792
1 changed files with 1 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/net/ethernet/ibm/ibmvnic.c
View file

@ -1859,7 +1859,7 @@ static int do_reset(struct ibmvnic_adapter *adapter,
if (adapter->reset_reason != VNIC_RESET_FAILOVER && if (adapter->reset_reason != VNIC_RESET_FAILOVER &&
adapter->reset_reason != VNIC_RESET_CHANGE_PARAM) adapter->reset_reason != VNIC_RESET_CHANGE_PARAM)
netdev_notify_peers(netdev); call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, netdev);
netif_carrier_on(netdev); netif_carrier_on(netdev);