Messages in this thread | | | Date | Wed, 21 Dec 2005 16:17:00 +0300 | From | Vitaly Wool <> | Subject | Re: [PATCH/RFC] SPI: async message handing library update |
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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!*
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