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    Subject[PATCH 15/20] dmatest: do DMA unmap for PQ operations
    Date
    Make driver do DMA unmap for PQ operations.

    Cc: Vinod Koul <vinod.koul@intel.com>
    Cc: Havard Skinnemoen <hskinnemoen@gmail.com>
    Cc: Tomasz Figa <t.figa@samsung.com>
    Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
    Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
    ---
    drivers/dma/dmatest.c | 26 ++++++++------------------
    1 file changed, 8 insertions(+), 18 deletions(-)

    diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
    index eabb230..3b36890 100644
    --- a/drivers/dma/dmatest.c
    +++ b/drivers/dma/dmatest.c
    @@ -304,18 +304,9 @@ static int dmatest_func(void *data)

    set_user_nice(current, 10);

    - /*
    - * src buffers are freed by the DMAEngine code with dma_unmap_single()
    - * (except DMA_MEMCPY and DMA_XOR operations)
    - * dst buffers are freed by ourselves below
    - */
    - flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT
    - | DMA_COMPL_SKIP_DEST_UNMAP;
    -
    - if (thread->type == DMA_MEMCPY || thread->type == DMA_XOR)
    - flags |= DMA_COMPL_SKIP_SRC_UNMAP;
    - else
    - flags |= DMA_COMPL_SRC_UNMAP_SINGLE;
    + /* src and dst buffers are freed by ourselves below */
    + flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT |
    + DMA_COMPL_SKIP_SRC_UNMAP | DMA_COMPL_SKIP_DEST_UNMAP;

    while (!kthread_should_stop()
    && !(iterations && total_tests >= iterations)) {
    @@ -448,12 +439,11 @@ static int dmatest_func(void *data)
    continue;
    }

    - /* Unmap by myself (see DMA_COMPL_SKIP_DEST_UNMAP above) */
    - if (thread->type == DMA_MEMCPY || thread->type == DMA_XOR) {
    - for (i = 0; i < src_cnt; i++)
    - dma_unmap_single(dev->dev, dma_srcs[i], len,
    - DMA_TO_DEVICE);
    - }
    + /* Unmap by myself */
    + for (i = 0; i < src_cnt; i++)
    + dma_unmap_single(dev->dev, dma_srcs[i], len,
    + DMA_TO_DEVICE);
    +
    for (i = 0; i < dst_cnt; i++)
    dma_unmap_single(dev->dev, dma_dsts[i], test_buf_size,
    DMA_BIDIRECTIONAL);
    --
    1.8.0


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