!883 [sync] PR-878: Bugfixes for RDMA/hns

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/878 
 
1.#I7A2PB
2.#I7A2PK
3.#I7A2SA
4.#I7A2V2
5.#I7A2VV 
 
Link:https://gitee.com/openeuler/kernel/pulls/883

 

Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com>
Reviewed-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>