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Subject[PATCH 4.19 256/321] RDMA/hns: Bugfix for the scene without receiver queue
Date
From: Lijun Ou <oulijun@huawei.com>

[ 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>
---
drivers/infiniband/hw/hns/hns_roce_qp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

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;
--
2.20.1


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