From: Yuyu Li <liyuyu6@huawei.com> driver inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ICAF19 CVE: NA ---------------------------------------------------------------------- Previously, firmware request fails, the driver does not restore the abnormal parameter value to the normal value, resulting in the user configuring other parameters, firmware request will continue to fail unless the user manually sets the abnormal parameter value to the normal range. Now, restore the parameters after a firmware request failure. Fixes: 41da9cd8456d ("RDMA/hns: Support congestion control algorithm parameter configuration") Signed-off-by: Yuyu Li <liyuyu6@huawei.com> Signed-off-by: Donghua Huang <huangdonghua3@h-partners.com> --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 518aaafda553..393c577a7444 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -7359,6 +7359,8 @@ static int hns_roce_v2_config_scc_param(struct hns_roce_dev *hr_dev, ibdev_err_ratelimited(&hr_dev->ib_dev, "failed to configure scc param, opcode: 0x%x, ret = %d.\n", le16_to_cpu(desc.opcode), ret); + memcpy(scc_param->param, scc_param->latest_param, + sizeof(scc_param->param)); mutex_unlock(&scc_param->scc_mutex); return ret; } -- 2.33.0