From 90e7a4d5066240b75cdfd1bf8944ca36622153b1 Mon Sep 17 00:00:00 2001 From: oulijun Date: Fri, 4 May 2018 10:57:10 +0800 Subject: [PATCH] RDMA/hns: Set desc_dma_addr for zero when free cmq desc In order to avoid illegal use for desc_dma_addr of ring, it needs to set it zero when free cmq desc. Signed-off-by: Lijun Ou Signed-off-by: Doug Ledford --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index a40978bbc1d01..46c3ab97e1bad 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -617,6 +617,8 @@ static void hns_roce_free_cmq_desc(struct hns_roce_dev *hr_dev, dma_unmap_single(hr_dev->dev, ring->desc_dma_addr, ring->desc_num * sizeof(struct hns_roce_cmq_desc), DMA_BIDIRECTIONAL); + + ring->desc_dma_addr = 0; kfree(ring->desc); } -- 2.30.2