[spi-devel-general] Re: [PATCH/RFC] SPI: async message handing library update

[Vitaly W. <vw...@ru...>]

David,

>			if (t->len) {
>				/* FIXME if bitbang->use_dma, dma_map_single()
>				 * before the transfer, and dma_unmap_single()
>				 * afterwards, for either or both buffers...
>				 */
>  
>
please *please* *_please_*!!! don't do it! :)
Let the controller driver do it *only in case it's not working in PIO!*

Vitaly