RDMA/hns: Fix flush cqe error when racing with destroy qp

QP needs to be modified to IB_QPS_ERROR to trigger HW flush cqe. But
when this process races with destroy qp, the destroy-qp process may
modify the QP to IB_QPS_RESET first. In this case flush cqe will fail
since it is invalid to modify qp from IB_QPS_RESET to IB_QPS_ERROR.

Add lock and bit flag to make sure pending flush cqe work is completed
first and no more new works will be added.

Fixes: ffd541d45726 ("RDMA/hns: Add the workqueue framework for flush cqe handler")
Signed-off-by: wenglianfa <[email protected]>
Signed-off-by: Junxian Huang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Reviewed-by: Zhu Yanjun <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>

0 files changed, 0 insertions, 0 deletions