IB/ehca: Fix CQE flags reporting

The driver was reporting CQE flags in the wrong bit positions, causing
consumers to miss incoming immediate data.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/hw/ehca/ehca_reqs.c b/drivers/infiniband/hw/ehca/ehca_reqs.c
index 5a3d96f..8fd88cd 100644 (file)
--- a/drivers/infiniband/hw/ehca/ehca_reqs.c
+++ b/drivers/infiniband/hw/ehca/ehca_reqs.c
@@ -786,7 +786,11 @@ repoll:
        wc->slid = cqe->rlid;
        wc->dlid_path_bits = cqe->dlid;
        wc->src_qp = cqe->remote_qp_number;
-       wc->wc_flags = cqe->w_completion_flags;
+       /*
+        * HW has "Immed data present" and "GRH present" in bits 6 and 5.
+        * SW defines those in bits 1 and 0, so we can just shift and mask.
+        */
+       wc->wc_flags = (cqe->w_completion_flags >> 5) & 3;
        wc->ex.imm_data = cpu_to_be32(cqe->immediate_data);
        wc->sl = cqe->service_level;