2018-05-29 17:48 GMT+08:00 Christoph Hellwig <h...@lst.de>:
> This matches the implementation of the more commonly used unmap_single
> routines and the sync_sg_for_cpu method which should provide equivalent
> cache maintainance.
>
> Signed-off-by: Christoph Hellwig <h...@lst.de>
> ---
> arch/nds32/kernel/dma.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/nds32/kernel/dma.c b/arch/nds32/kernel/dma.c
> index e0c94a2889c5..b9973317c734 100644
> --- a/arch/nds32/kernel/dma.c
> +++ b/arch/nds32/kernel/dma.c
> @@ -458,6 +458,12 @@ static void nds32_dma_unmap_sg(struct device *dev,
> struct scatterlist *sg,
> int nhwentries, enum dma_data_direction dir,
> unsigned long attrs)
> {
> + int i;
> +
> + for (i = 0; i < nhwentries; i++, sg++) {
> + nds32_dma_sync_single_for_cpu(dev, sg_dma_address(sg),
> + sg->length, dir);
> + }
> }
>
> struct dma_map_ops nds32_dma_ops = {
Acked-by: Greentime Hu <greent...@andestech.com>
Tested-by: Greentime Hu <greent...@andestech.com>
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