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s390/qeth: use ip_lock for hsuid configuration 

qeth_l3_dev_hsuid_store() changes the ip hash table, which
requires the ip_lock.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ursula Braun 2016-09-15 14:39:22 +02:00 committed by David S. Miller
parent e830baa9c3
commit 016930b88a
1 changed files with 5 additions and 0 deletions
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5
drivers/s390/net/qeth_l3_sys.c
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@ -297,7 +297,9 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
addr->u.a6.pfxlen = 0;
addr->type = QETH_IP_TYPE_NORMAL;
spin_lock_bh(&card->ip_lock);
qeth_l3_delete_ip(card, addr);
spin_unlock_bh(&card->ip_lock);
kfree(addr);
}
@ -329,7 +331,10 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
addr->type = QETH_IP_TYPE_NORMAL;
} else
return -ENOMEM;
spin_lock_bh(&card->ip_lock);
qeth_l3_add_ip(card, addr);
spin_unlock_bh(&card->ip_lock);
kfree(addr);
return count;