> > I think the powerpc port is at fault here. > > > > Part of being able to advertise ISA_DMA_API is providing isa_virt_to_bus().
Hrm, that's ancient gunk, I'll have to dig. We potentially can support ISA devices DMA'ing from an ISA bridge... but via the iommu, which means isa_virt_to_bus is a non-starter. But then, do we really care ? IE. Is there single device that actually requires ISA_DMA_API and that is expected to work on any currently supported powerpc hw ? :-) We don't even support PReP anymore, so that leaves us with what ? Anybody has an objection to turning ISA_DMA_API off ? Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev