[IB] mthca: fix posting of atomic operations

The size of work requests for atomic operations was computed
incorrectly in mthca: all sizeofs need to be divided by 16.

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

diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 7f39af44b27432de3f01b0faa803f9ed9bc8ec52..190c1dc0ee27aa9c4acbd98a62fb17e75f1d0124 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -1556,8 +1556,8 @@ int mthca_tavor_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                                }
 
                                wqe += sizeof (struct mthca_atomic_seg);
-                               size += sizeof (struct mthca_raddr_seg) / 16 +
-                                       sizeof (struct mthca_atomic_seg);
+                               size += (sizeof (struct mthca_raddr_seg) +
+                                        sizeof (struct mthca_atomic_seg)) / 16;
                                break;
 
                        case IB_WR_RDMA_WRITE:
@@ -1876,8 +1876,8 @@ int mthca_arbel_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                                }
 
                                wqe += sizeof (struct mthca_atomic_seg);
-                               size += sizeof (struct mthca_raddr_seg) / 16 +
-                                       sizeof (struct mthca_atomic_seg);
+                               size += (sizeof (struct mthca_raddr_seg) +
+                                        sizeof (struct mthca_atomic_seg)) / 16;
                                break;
 
                        case IB_WR_RDMA_READ: