From: Lijun Ou <oulijun@huawei.com>
Date: Wed, 12 Dec 2018 09:49:07 +0000 (+0800)
Subject: RDMA/hns: Bugfix for the scene without receiver queue
X-Git-Tag: archive/raspbian/5.2.17-1+rpi1^2^2^2~10
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=72fcec06a808030724f7b93b9c3655c16d5f28cd;p=linux.git

RDMA/hns: Bugfix for the scene without receiver queue

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>

Gbp-Pq: Topic bugfix/arm64/huawei-taishan
Gbp-Pq: Name 0028-RDMA-hns-Bugfix-for-the-scene-without-receiver-queue.patch
---

diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c
index efb7e961ca6..de1676e2582 100644
--- a/drivers/infiniband/hw/hns/hns_roce_qp.c
+++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
@@ -503,7 +503,8 @@ 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;