From 3109c8f6313598d94dcb592cfb71c548ff7f6f10 Mon Sep 17 00:00:00 2001 From: Wenpeng Liang Date: Mon, 17 Jan 2022 21:07:32 +0800 Subject: [PATCH] RDMA/hns: Remove dqpn filling when modify qp from Init to Init mainline inclusion from mainline-v5.15-rc1 commit fe164fc8d7b2 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4QOTS CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?id=fe164fc8d7b246987c54841e0d4e929a72d837e8 --------------------------------------------------------------------- According to the IB specification, the destination qpn is allowed to be filled into the qpc only when the qp transitions from Init to RTR, so this code is unused. Link: https://lore.kernel.org/r/1629985056-57004-4-git-send-email-liangwenpeng@huawei.com Signed-off-by: Wenpeng Liang Signed-off-by: Jason Gunthorpe sigend-off-by: Guofeng Yue Reviewed-by: Yangyang Li Acked-by: Xie XiuQi Signed-off-by: Zheng Zengkai --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index faaca96eee12..d9bd2c721578 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -4135,8 +4135,6 @@ static void modify_qp_init_to_init(struct ib_qp *ibqp, struct hns_roce_v2_qp_context *context, struct hns_roce_v2_qp_context *qpc_mask) { - struct hns_roce_qp *hr_qp = to_hr_qp(ibqp); - /* * In v2 engine, software pass context and context mask to hardware * when modifying qp. If software need modify some fields in context, @@ -4161,11 +4159,6 @@ static void modify_qp_init_to_init(struct ib_qp *ibqp, hr_reg_write(context, QPC_SRQN, to_hr_srq(ibqp->srq)->srqn); hr_reg_clear(qpc_mask, QPC_SRQN); } - - if (attr_mask & IB_QP_DEST_QPN) { - hr_reg_write(context, QPC_DQPN, hr_qp->qpn); - hr_reg_clear(qpc_mask, QPC_DQPN); - } } static int config_qp_rq_buf(struct hns_roce_dev *hr_dev, -- GitLab