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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Wenpeng Liang <liangwenpeng@huawei.com>,
        Weihang Li <liweihang@huawei.com>,
        Jason Gunthorpe <jgg@nvidia.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.4 236/408] RDMA/hns: Fix the wrong value of rnr_retry when querying qp
Date:   Tue, 27 Oct 2020 14:52:54 +0100
Message-Id: <20201027135506.001607909@linuxfoundation.org>
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From: Wenpeng Liang <liangwenpeng@huawei.com>

[ Upstream commit 99fcf82521d91468ee6115a3c253aa032dc63cbc ]

The rnr_retry returned to the user is not correct, it should be got from
another fields in QPC.

Fixes: bfe860351e31 ("RDMA/hns: Fix cast from or to restricted __le32 for driver")
Link: https://lore.kernel.org/r/1600509802-44382-7-git-send-email-liweihang@huawei.com
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 0502c90c83edd..def266626223a 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4616,7 +4616,9 @@ static int hns_roce_v2_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
 	qp_attr->retry_cnt = roce_get_field(context.byte_212_lsn,
 					    V2_QPC_BYTE_212_RETRY_CNT_M,
 					    V2_QPC_BYTE_212_RETRY_CNT_S);
-	qp_attr->rnr_retry = le32_to_cpu(context.rq_rnr_timer);
+	qp_attr->rnr_retry = roce_get_field(context.byte_244_rnr_rxack,
+					    V2_QPC_BYTE_244_RNR_CNT_M,
+					    V2_QPC_BYTE_244_RNR_CNT_S);
 
 done:
 	qp_attr->cur_qp_state = qp_attr->qp_state;
-- 
2.25.1