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    Subject[PATCH for-next 03/20] IB/hns: Add the check for pointer ctrl
    Date
    From: Lijun Ou <oulijun@huawei.com>

    The pointer ctrl may be null, so we add check for it.

    Signed-off-by: Lijun Ou <oulijun@huawei.com>
    Reviewed-by: Wei Hu <xavier.huwei@huawei.com>
    Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
    ---
    drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 6 ++++++
    1 file changed, 6 insertions(+)

    diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
    index 5f76fc1..ea47ec4 100644
    --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
    +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
    @@ -336,6 +336,12 @@ int hns_roce_v1_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
    }

    ctrl = get_recv_wqe(hr_qp, ind);
    + if (unlikely(!ctrl)) {
    + dev_err(dev, "Get recv wqe failed!\n");
    + ret = -EINVAL;
    + *bad_wr = wr;
    + goto out;
    + }

    roce_set_field(ctrl->rwqe_byte_12,
    RQ_WQE_CTRL_RWQE_BYTE_12_RWQE_SGE_NUM_M,
    --
    1.7.9.5
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