From: Weili Qian <qianweili@huawei.com> driver inclusion category:feature bugzilla: https://gitee.com/openeuler/kernel/issues/I6DRLU The function qm_poll_req_cb() may take a while due to complex req_cb, so soft lockup may occur in kernel with preemption disabled. Add a cond_resched() to prevent that. Signed-off-by: Weili Qian <qianweili@huawei.com> Signed-off-by: JiangShui Yang <yangjiangshui@h-partners.com> Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com> --- drivers/crypto/hisilicon/qm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index b58cff78c55b..2517230b7175 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -863,6 +863,8 @@ static void qm_poll_req_cb(struct hisi_qp *qp) qm_db(qm, qp->qp_id, QM_DOORBELL_CMD_CQ, qp->qp_status.cq_head, 0); atomic_dec(&qp->qp_status.used); + + cond_resched(); } /* set c_flag */ -- 2.20.1