IB/mlx4: Initialize SRQ scatter entries when creating an SRQ

As for memfree mthca hardware, ConnectX also requires SRQ WQE scatter
entries to be initialized with the invalid L_Key at SRQ creation time.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mlx4/srq.c b/drivers/infiniband/hw/mlx4/srq.c
index d42565258fb7..cf8085bcbd6d 100644
--- a/drivers/infiniband/hw/mlx4/srq.c
+++ b/drivers/infiniband/hw/mlx4/srq.c
@@ -74,6 +74,7 @@ struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
         struct mlx4_ib_dev *dev = to_mdev(pd->device);
         struct mlx4_ib_srq *srq;
         struct mlx4_wqe_srq_next_seg *next;
+        struct mlx4_wqe_data_seg *scatter;
         int desc_size;
         int buf_size;
         int err;
@@ -149,6 +150,11 @@ struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
                         next = get_wqe(srq, i);
                         next->next_wqe_index =
                                 cpu_to_be16((i + 1) & (srq->msrq.max - 1));
+
+                        for (scatter = (void *) (next + 1);
+                             (void *) scatter < (void *) next + desc_size;
+                             ++scatter)
+                                scatter->lkey = cpu_to_be32(MLX4_INVALID_LKEY);
                 }
 
                 err = mlx4_mtt_init(dev->dev, srq->buf.npages, srq->buf.page_shift,