Messages in this thread | | | Subject | Re: linux-next: build failure after merge of the final tree (net-next tree related) | From | Benjamin Herrenschmidt <> | Date | Fri, 21 Sep 2012 08:22:44 +1000 |
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> > 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.
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