On Sun, Sep 27, 2015 at 7:55 PM, yitian <yitian.bu@xxxxxxxxxxxxxx> wrote:
> when channel number is less than maximum number, the register
> address of all channels is wrong, which causes the "nollp" flag
> is set for all channels even if HW supports llp.
>
> Signed-off-by: Yitian Bu <yitian.bu@xxxxxxxxxxxxxx>
> ---
> drivers/dma/dw/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
> index cf1c87f..c2e9ac8 100644
> --- a/drivers/dma/dw/core.c
> +++ b/drivers/dma/dw/core.c
> @@ -1591,7 +1591,7 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct
> dw_dma_platform_data *pdata)
> INIT_LIST_HEAD(&dw->dma.channels);
> for (i = 0; i < nr_channels; i++) {
> struct dw_dma_chan *dwc = &dw->chan[i];
> - int r = nr_channels - i - 1;
> + int r = DW_DMA_MAX_NR_CHANNELS - i - 1;
>
> dwc->chan.device = &dw->dma;
> dma_cookie_init(&dwc->chan);
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
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