diff mbox series

[5.14,135/432] RDMA/hns: Fix incorrect lsn field

Message ID 20210916155815.331821768@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Sept. 16, 2021, 3:58 p.m. UTC 
From: Yixing Liu <liuyixing1@huawei.com>

[ Upstream commit 9bed8a70716ba65d300b9cc30eb7e0276353f7bf ]

In RNR NAK screnario, according to the specification, when no credit is
available, only the first fragment of the send request can be sent. The
LSN(Limit Sequence Number) field should be 0 or the entire packet will be
resent.

Fixes: 926a01dc000d ("RDMA/hns: Add QP operations support for hip08 SoC")
Link: https://lore.kernel.org/r/1629883169-2306-1-git-send-email-liangwenpeng@huawei.com
Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@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 | 3 ---
 1 file changed, 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 0e0be5664137..f4cea6dcec2f 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4489,9 +4489,6 @@  static int modify_qp_rtr_to_rts(struct ib_qp *ibqp,
 
 	hr_reg_clear(qpc_mask, QPC_CHECK_FLG);
 
-	hr_reg_write(context, QPC_LSN, 0x100);
-	hr_reg_clear(qpc_mask, QPC_LSN);
-
 	hr_reg_clear(qpc_mask, QPC_V2_IRRL_HEAD);
 
 	return 0;