On Wed, Apr 25, 2018 at 11:25:11AM +0100, Russell King - ARM Linux wrote: > > config ARM_DMA_USE_IOMMU > > - bool > > + def_bool y > > select ARM_HAS_SG_CHAIN > > select NEED_SG_DMA_LENGTH > > This doesn't work - as has recently been discussed with hch, we can't > globally enable NEED_SG_DMA_LENGTH on ARM - the ARM architecture > pre-dates the addition of the DMA length member in the scatterlist, > and not every machine supports the splitting of the DMA length from > the non-DMA length member. Hence, this will cause a regression, > sorry. Agreed as-is. However supporting it everywhere should not be much work, I'll take a look at it. -- 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
