IPoIB: reinitialize mcast structs' completions for every query

Make sure mcast->done is initialized to uncompleted value before we
submit a new query, so that it's safe to wait on.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index c33ed87f9dff..10404e09d1ef 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -135,8 +135,6 @@ static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev,
         if (!mcast)
                 return NULL;
 
-        init_completion(&mcast->done);
-
         mcast->dev = dev;
         mcast->created = jiffies;
         mcast->backoff = 1;
@@ -350,6 +348,8 @@ static int ipoib_mcast_sendonly_join(struct ipoib_mcast *mcast)
         rec.port_gid = priv->local_gid;
         rec.pkey     = cpu_to_be16(priv->pkey);
 
+        init_completion(&mcast->done);
+
         ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec,
                                      IB_SA_MCMEMBER_REC_MGID            |
                                      IB_SA_MCMEMBER_REC_PORT_GID        |
@@ -469,6 +469,8 @@ static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast,
                 rec.traffic_class = priv->broadcast->mcmember.traffic_class;
         }
 
+        init_completion(&mcast->done);
+
         ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec, comp_mask,
                                      mcast->backoff * 1000, GFP_ATOMIC,
                                      ipoib_mcast_join_complete,