RDMA/hns: Bugfix for the scene without receiver queue

[ Upstream commit 4d103905eb1e4f14cb62fcf962c9d35da7005dea ]

In some application scenario, the user could not have receive queue when
run rdma write or read operation.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c
index 54d2286..af24698 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_qp.c
+++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
@@ -522,7 +522,8 @@ static int hns_roce_qp_has_sq(struct ib_qp_init_attr *attr)
 static int hns_roce_qp_has_rq(struct ib_qp_init_attr *attr)
 {
        if (attr->qp_type == IB_QPT_XRC_INI ||
-           attr->qp_type == IB_QPT_XRC_TGT || attr->srq)
+           attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
+           !attr->cap.max_recv_wr)
                return 0;
 
        return 1;