At Mon, 27 Apr 2015 10:57:10 +0200,
Arnd Bergmann wrote:
>
> On Monday 27 April 2015 14:35:14 Yoshinori Sato wrote:
> > +void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
> > + size_t size, enum dma_data_direction dir)
> > +{
> > +}
> > +EXPORT_SYMBOL(dma_sync_single_for_device);
> > +
> > +void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
> > + int nents, enum dma_data_direction dir)
> > +{
> > + int i;
> > +
> > + for (i = 0; i < nents; sg++, i++)
> > + dma_sync_single_for_device(dev, sg->dma_address,
> > + sg->length, dir);
> > +}
> > +EXPORT_SYMBOL(dma_sync_sg_for_device);
> > +
> > +dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size,
> > + enum dma_data_direction dir)
> > +{
> > + dma_addr_t handle = virt_to_bus(addr);
> > +
> > + dma_sync_single_for_device(dev, handle, size, dir);
> > + return handle;
> > +}
> > +EXPORT_SYMBOL(dma_map_single);
>
>
> As this all doesn't do anything, and your dma-mapping.h header explains
> that the architecture is cache-coherent, just remove these functions,
> and replace them with empty 'static inline' helpers in that header.
>
> Arnd
>
OK.
This DMA support part too old.
I will rewriting.
Thanks.
--
Yoshinori Sato
<ysato@xxxxxxxxxxxxxxxxxxxx>
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