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net/smc: dev_put for netdev after usage of ib_query_gid()

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For RoCEs ib_query_gid() takes a reference count on the net_device.
This reference count must be decreased by the caller.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reported-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Fixes: 0cfdd8f92c ("smc: connection and link group creation")
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ursula Braun 2017-10-11 13:47:23 +02:00 committed by David S. Miller
parent d921c420d2
commit 43e2ada3e0
1 changed files with 8 additions and 4 deletions
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12
net/smc/smc_core.c
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@ -380,10 +380,14 @@ static int smc_link_determine_gid(struct smc_link_group *lgr)
if (ib_query_gid(lnk->smcibdev->ibdev, lnk->ibport, i, &gid,
&gattr))
continue;
if (gattr.ndev &&
(vlan_dev_vlan_id(gattr.ndev) == lgr->vlan_id)) {
lnk->gid = gid;
return 0;
if (gattr.ndev) {
if (is_vlan_dev(gattr.ndev) &&
vlan_dev_vlan_id(gattr.ndev) == lgr->vlan_id) {
lnk->gid = gid;
dev_put(gattr.ndev);
return 0;
}
dev_put(gattr.ndev);
}
}
return -ENODEV;