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authorUrsula Braun <ubraun@linux.vnet.ibm.com>2016-09-15 15:39:22 +0300
committerDavid S. Miller <davem@davemloft.net>2016-09-16 11:29:13 +0300
commit016930b88a1d6eb6e6b3287d593e13ca06986acc (patch)
treea8c3d3d737727e8825e3e8aafe16b026cac3f5de /drivers/s390/net/qeth_l3_sys.c
parente830baa9c3f0023769ba9aab19eb44c892769d87 (diff)
downloadlinux-016930b88a1d6eb6e6b3287d593e13ca06986acc.tar.xz
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>
Diffstat (limited to 'drivers/s390/net/qeth_l3_sys.c')
-rw-r--r--drivers/s390/net/qeth_l3_sys.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c
index 65645b11fc19..0e00a5ce0f00 100644
--- a/drivers/s390/net/qeth_l3_sys.c
+++ b/drivers/s390/net/qeth_l3_sys.c
@@ -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;