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    Subject[PATCH v3 04/15] dmaengine: dw-axi-dmac: Add device_synchronize() callback
    Date
    Add support for device_synchronize() callback function to sync with
    dmaengine_terminate_sync().

    Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
    ---
    drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 8 ++++++++
    1 file changed, 8 insertions(+)

    diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
    index 46e2ba978e20..56b213211341 100644
    --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
    +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
    @@ -347,6 +347,13 @@ static void dma_chan_issue_pending(struct dma_chan *dchan)
    spin_unlock_irqrestore(&chan->vc.lock, flags);
    }

    +static void dw_axi_dma_synchronize(struct dma_chan *dchan)
    +{
    + struct axi_dma_chan *chan = dchan_to_axi_dma_chan(dchan);
    +
    + vchan_synchronize(&chan->vc);
    +}
    +
    static int dma_chan_alloc_chan_resources(struct dma_chan *dchan)
    {
    struct axi_dma_chan *chan = dchan_to_axi_dma_chan(dchan);
    @@ -940,6 +947,7 @@ static int dw_probe(struct platform_device *pdev)
    dw->dma.device_free_chan_resources = dma_chan_free_chan_resources;

    dw->dma.device_prep_dma_memcpy = dma_chan_prep_dma_memcpy;
    + dw->dma.device_synchronize = dw_axi_dma_synchronize;

    platform_set_drvdata(pdev, chip);

    --
    2.18.0
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