The queue depth is 1024, so the condition for judging the queue full
should be 1023, otherwise the hardware cannot judge whether the queue
is empty or full.
Fixes:
263c9959c937("crypto: hisilicon - add queue management driver...")
Signed-off-by: Hui Tang <tanghui20@huawei.com>
Signed-off-by: Yang Shen <shenyang39@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
struct hisi_qp_status *qp_status = &qp->qp_status;
u16 sq_tail = qp_status->sq_tail;
- if (unlikely(atomic_read(&qp->qp_status.used) == QM_Q_DEPTH))
+ if (unlikely(atomic_read(&qp->qp_status.used) == QM_Q_DEPTH - 1))
return NULL;
return qp->sqe + sq_tail * qp->qm->sqe_size;