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: v4.19.88~65
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=53ac199202e3d2f9560a977877b03619f8d36a8a;p=thirdparty%2Fkernel%2Fstable.git

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 54d22868ffba5..af24698ff2262 100644
--- 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;