Commit 90e7a4d5 authored May 04, 2018 by oulijun Committed by Doug Ledford May 09, 2018

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 <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

parent 778cc5a8

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}