From: Lijun Ou <oulijun@huawei.com>
Date: Tue, 20 Sep 2016 16:07:04 +0000 (+0100)
Subject: IB/hns: Return bad wr while post send failed
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=07182fa77b3a64962aca12e8c0006646316bd26d;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

IB/hns: Return bad wr while post send failed

While post failed, hns roce should return the wr failed to user.
We omitted this while qp type is wrong and fixed it.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Dongdong Huang(Donald) <hdd.huang@huawei.com>
Reviewed-by:  Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
index 65c3192c2f00..1205d1af4db0 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -73,8 +73,14 @@ int hns_roce_v1_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 	u32 ind = 0;
 	int ret = 0;
 
-	spin_lock_irqsave(&qp->sq.lock, flags);
+	if (unlikely(ibqp->qp_type != IB_QPT_GSI &&
+		ibqp->qp_type != IB_QPT_RC)) {
+		dev_err(dev, "un-supported QP type\n");
+		*bad_wr = NULL;
+		return -EOPNOTSUPP;
+	}
 
+	spin_lock_irqsave(&qp->sq.lock, flags);
 	ind = qp->sq_next_wqe;
 	for (nreq = 0; wr; ++nreq, wr = wr->next) {
 		if (hns_roce_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) {
@@ -263,9 +269,6 @@ int hns_roce_v1_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 					      HNS_ROCE_WQE_SGE_NUM_BIT);
 			}
 			ind++;
-		} else {
-			dev_dbg(dev, "unSupported QP type\n");
-			break;
 		}
 	}