On Fri, Jun 21, 2013 at 09:17:59AM +0200, Marek Szyprowski wrote: > Using DMA attributes for this seems to be a bad idea. The dma direction > parameter is much more appropriate. Will Deacon recently posted a patch > which does it right, see: > > https://git.linaro.org/gitweb?p=people/mszyprowski/linux-dma-mapping.git;a=commit;h=8fc3749bd31d139db58f874e093255fe62505968 Agreed, that is one usecase the dma-direction parameter was made for. In particular: DMA_FROM_DEVICE -> Write only mapping DMA_TO_DEVICE -> Read only mapping DMA_BIDIRECTIONAL -> Read/Write mapping So no need to use the dma attributes for that. Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
