2018-04-26 14:42 GMT+08:00 Christoph Hellwig <hch@xxxxxx>:
> Can you try this patch ontop of either the new or original one?
>
> ---
> diff --git a/lib/dma-noncoherent.c b/lib/dma-noncoherent.c
> index f4b8532c20ac..a2c192b3508d 100644
> --- a/lib/dma-noncoherent.c
> +++ b/lib/dma-noncoherent.c
> @@ -48,7 +48,7 @@ static int dma_noncoherent_map_sg(struct device *dev, struct scatterlist *sgl,
> return nents;
> }
>
> -#ifdef CONFIG_DMA_NONCOHERENT_SYNC_FOR_CPU
> +#ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU
> static void dma_noncoherent_sync_single_for_cpu(struct device *dev,
> dma_addr_t addr, size_t size, enum dma_data_direction dir)
> {
> @@ -88,7 +88,7 @@ const struct dma_map_ops dma_noncoherent_ops = {
> .sync_sg_for_device = dma_noncoherent_sync_sg_for_device,
> .map_page = dma_noncoherent_map_page,
> .map_sg = dma_noncoherent_map_sg,
> -#ifdef CONFIG_DMA_NONCOHERENT_SYNC_FOR_CPU
> +#ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU
> .sync_single_for_cpu = dma_noncoherent_sync_single_for_cpu,
> .sync_sg_for_cpu = dma_noncoherent_sync_sg_for_cpu,
> .unmap_page = dma_noncoherent_unmap_page,
It works!!!
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