Messages in this thread | | | Date | Wed, 13 Feb 2008 12:07:26 -0700 | From | "Dan Williams" <> | Subject | Re: [RFC v3 4/7] dmaengine: Add slave DMA interface |
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On Feb 12, 2008 9:43 AM, Haavard Skinnemoen <hskinnemoen@atmel.com> wrote: [..] > /** > + * struct dma_slave_descriptor - extended DMA descriptor for slave DMA > + * @async_tx: async transaction descriptor > + * @client_node: for use by the client, for example when operating on > + * scatterlists. > + */ > +struct dma_slave_descriptor { > + struct dma_async_tx_descriptor txd; > + struct list_head client_node; > +};
Can you explain a bit why client_node is needed? I do not think we need dma_slave_descriptor if dma_unmap data / control is added to dma_async_tx_descriptor. Hmm?
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