This is a note to let you know that I've just added the patch titled
RDMA/hns: Fix initial arm_st of CQ
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-hns-fix-initial-arm_st-of-cq.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit adfc393dc225b6a92dbb964d9fab301952260273
Author: Haoyue Xu <xuhaoyue1@xxxxxxxxxxxxx>
Date: Fri Oct 29 17:58:46 2021 +0800
RDMA/hns: Fix initial arm_st of CQ
[ Upstream commit 571fb4fb78a3bf0fcadbe65eca9ca4ccee885af4 ]
We set the init CQ status to ARMED before. As a result, an unexpected CEQE
would be reported. Therefore, the init CQ status should be set to no_armed
rather than REG_NXT_CEQE.
Fixes: a5073d6054f7 ("RDMA/hns: Add eq support of hip08")
Link: https://lore.kernel.org/r/20211029095846.26732-1-liangwenpeng@xxxxxxxxxx
Signed-off-by: Haoyue Xu <xuhaoyue1@xxxxxxxxxxxxx>
Signed-off-by: Wenpeng Liang <liangwenpeng@xxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 0ccb0c453f6a2..a77732c218dcb 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -3335,7 +3335,7 @@ static void hns_roce_v2_write_cqc(struct hns_roce_dev *hr_dev,
memset(cq_context, 0, sizeof(*cq_context));
hr_reg_write(cq_context, CQC_CQ_ST, V2_CQ_STATE_VALID);
- hr_reg_write(cq_context, CQC_ARM_ST, REG_NXT_CEQE);
+ hr_reg_write(cq_context, CQC_ARM_ST, NO_ARMED);
hr_reg_write(cq_context, CQC_SHIFT, ilog2(hr_cq->cq_depth));
hr_reg_write(cq_context, CQC_CEQN, hr_cq->vector);
hr_reg_write(cq_context, CQC_CQN, hr_cq->cqn);
