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    Subject[PATCH 2/3] dmaengine/dw_dmac: Set channel id's in controller driver
    Date
    dw_dmac may conditionally add channels in reverse order inside channel list in
    struct dma_device. So, we must set chan_id's here and pass this to dmaengine, so
    that it doesn't override these values.

    Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
    ---
    drivers/dma/dw_dmac.c | 2 ++
    1 files changed, 2 insertions(+), 0 deletions(-)

    diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
    index 3550042..e2c8e4e 100644
    --- a/drivers/dma/dw_dmac.c
    +++ b/drivers/dma/dw_dmac.c
    @@ -1397,6 +1397,7 @@ static int __init dw_probe(struct platform_device *pdev)
    tasklet_init(&dw->tasklet, dw_dma_tasklet, (unsigned long)dw);

    dw->all_chan_mask = (1 << pdata->nr_channels) - 1;
    + dw->dma.chan_ids_set = true;

    INIT_LIST_HEAD(&dw->dma.channels);
    for (i = 0; i < pdata->nr_channels; i++) {
    @@ -1404,6 +1405,7 @@ static int __init dw_probe(struct platform_device *pdev)

    dwc->chan.device = &dw->dma;
    dwc->chan.cookie = dwc->completed = 1;
    + dwc->chan.chan_id = i;
    if (pdata->chan_allocation_order == CHAN_ALLOCATION_ASCENDING)
    list_add_tail(&dwc->chan.device_node,
    &dw->dma.channels);
    --
    1.7.2.2


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