On 10/31/2013 02:16 AM, Hiroshi Doyu wrote: > Stephen Warren <swarren@xxxxxxxxxxxxx> wrote @ Wed, 30 Oct 2013 23:15:00 +0100: > >> 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. > > Practically DMA API is the only interface for IOMMU(ARM_DMA_USE_IOMMU) > for us, but technically they are/should be independent. I would be tempted to deal with this in the defconfig, but I suppose handling it as a Kconfig select is fine too; there's probably no real disadvantage in doing so. -- 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
