RDMA/hns: Not support qp transition from reset to reset for hip06

Because hip06 hardware is not support for qp transition from
reset to reset state, it need to return errno when qp
transited from reset to reset. This patch fixes it.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c
index cdfb774..baaf906 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_qp.c
+++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
@@ -956,7 +956,14 @@ int hns_roce_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
        }
 
        if (cur_state == new_state && cur_state == IB_QPS_RESET) {
-               ret = 0;
+               if (hr_dev->caps.min_wqes) {
+                       ret = -EPERM;
+                       dev_err(dev, "cur_state=%d new_state=%d\n", cur_state,
+                               new_state);
+               } else {
+                       ret = 0;
+               }
+
                goto out;
        }