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SubjectRe: [PATCH 6/7] MIPS: SGI-IP27: use generic PCI driver
On Tue, Jan 29, 2019 at 04:24:45PM +0100, Thomas Bogendoerfer wrote:
> > From an abstraction point of view this doesn't really belong into
> > a bridge driver as it is a global exported function. I guess we can
> > keep it here with a fixme comment, but we should probably move this
> > into a method call instead.
>
> or put the nodeid into the bus struct ?

Doesn't sound to bad to me, you'll just have to update a fair
amount of arch implementations.

> I'm all for it. I looked at the examples for using dma_pfn_offset and the
> only one coming close to usefull for me is arch/sh/drivers/pci/pcie-sh7786.c
> It overloads pcibios_bus_add_device() to set dma_pfn_offset, which doesn't
> look much nicer. What about having a dma_pfn_offset in struct pci_bus
> which all device inherit from ?

Or add a add_dev callback, similar to what I did for a previous series
that we didn't end up needing after all:

http://git.infradead.org/users/hch/misc.git/commitdiff/06d9b4fc7deed336edc1292fe2e661729e98ec39

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