Comment 6 for bug 1864950

@ike
Can you push this critical patchset into ubuntu focal kernel.

RDMA/hns: Support to set mininum depth of qp to 0
RDMA/hns: Treat revision HIP08_A as a special case
RDMA/hns: Delayed flush cqe process with workqueue
RDMA/hns: Add the workqueue framework for flush cqe handler
RDMA/hns: Stop doorbell update while qp state error
RDMA/hns: Use flush framework for the case in aeq