linux-kernel - [PATCH V2 for-next 16/19] IB/hns: Update the rq head when modify qp state

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Date:   Tue, 20 Sep 2016 17:07:09 +0100
From:   Salil Mehta <salil.mehta@...wei.com>
To:     <dledford@...hat.com>
CC:     <salil.mehta@...wei.com>, <xavier.huwei@...wei.com>,
        <oulijun@...wei.com>, <yisen.zhuang@...wei.com>,
        <mehta.salil.lnk@...il.com>, <xuwei5@...ilicon.com>,
        <linux-rdma@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...wei.com>
Subject: [PATCH V2 for-next 16/19] IB/hns: Update the rq head when modify qp state

From: Lijun Ou <oulijun@...wei.com>

The rq head in qpc was zero will miss the rq wqes which
have be sent, so here we should take the real value.

Signed-off-by: Lijun Ou <oulijun@...wei.com>
Reviewed-by:  Wei Hu (Xavier) <xavier.huwei@...wei.com>
Signed-off-by: Salil Mehta <salil.mehta@...wei.com>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
index bc06004..2070e9e 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -2248,7 +2248,8 @@ static int hns_roce_v1_m_qp(struct ib_qp *ibqp, const struct ib_qp_attr *attr,
 
 		roce_set_field(context->qpc_bytes_68,
 			       QP_CONTEXT_QPC_BYTES_68_RQ_HEAD_M,
-			       QP_CONTEXT_QPC_BYTES_68_RQ_HEAD_S, 0);
+			       QP_CONTEXT_QPC_BYTES_68_RQ_HEAD_S,
+			       hr_qp->rq.head);
 		roce_set_field(context->qpc_bytes_68,
 			       QP_CONTEXT_QPC_BYTES_68_RQ_CUR_INDEX_M,
 			       QP_CONTEXT_QPC_BYTES_68_RQ_CUR_INDEX_S, 0);
-- 
1.9.1