On 10/18/2013 04:26 AM, Hiroshi Doyu wrote: > SMMU expects ARM_DMA_USE_IOMMU to be enabled to use DMA mapping API by > default. Is the select required for the driver to be useful at all (in which case it's fine), or simply for things to work "better" (define "better"), in which case perhaps leaving it optional is more correct. -- 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