From: Yixian Liu <liuyixian@huawei.com>
Date: Wed, 3 Jan 2018 10:44:07 +0800
Subject: RDMA/hns: Fix QP state judgement before sending work requests
Patch-mainline: v4.16-rc1
Git-commit: 10bd2ade4b5fe0e8d0f3a4c4b20f008c4cb06bd2
References: bsc#1104427 FATE#326416

The QP can accept send work requests only when the QP is
in the states that allow them to be submitted.

This patch updates the QP state judgement based on the
specification.

Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Shaobo Xu <xushaobo2@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -76,7 +76,8 @@ static int hns_roce_v2_post_send(struct
 		return -EOPNOTSUPP;
 	}
 
-	if (unlikely(qp->state != IB_QPS_RTS && qp->state != IB_QPS_SQD)) {
+	if (unlikely(qp->state == IB_QPS_RESET || qp->state == IB_QPS_INIT ||
+		     qp->state == IB_QPS_RTR)) {
 		dev_err(dev, "Post WQE fail, QP state %d err!\n", qp->state);
 		*bad_wr = wr;
 		return -EINVAL;