This patch mainly add memory barrier operation for making sure
rqwqe are written before ring the doorbell.
Signed-off-by: Lijun Ou <oulijun@xxxxxxxxxx>
---
providers/hns/hns_roce_u_hw_v2.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c
index 42bd5dd..7323eaa 100644
--- a/providers/hns/hns_roce_u_hw_v2.c
+++ b/providers/hns/hns_roce_u_hw_v2.c
@@ -841,6 +841,8 @@ out:
if (nreq) {
qp->rq.head += nreq;
+ udma_to_device_barrier();
+
if (qp->flags & HNS_ROCE_SUPPORT_RQ_RECORD_DB)
*qp->rdb = qp->rq.head & 0xffff;
else
--
1.9.1
--
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