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-rw-r--r--drivers/infiniband/hw/mlx4/mad.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 658a622791f..21a794152d1 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -1652,6 +1652,9 @@ static int create_pv_resources(struct ib_device *ibdev, int slave, int port,
{
int ret, cq_size;
+ if (ctx->state != DEMUX_PV_STATE_DOWN)
+ return -EEXIST;
+
ctx->state = DEMUX_PV_STATE_STARTING;
/* have QP0 only on port owner, and only if link layer is IB */
if (ctx->slave == mlx4_master_func_num(to_mdev(ctx->ib_dev)->dev) &&