[Very RFC 04/46] powernv/pci: Move dma_{dev|bus}_setup into pci-ioda.c

[Christoph Hellwig]

> +#ifdef CONFIG_PCI_IOV
> +	struct pnv_ioda_pe *pe;
> +
> +	/* Fix the VF pdn PE number */
> +	if (pdev->is_virtfn) {
> +		list_for_each_entry(pe, &phb->ioda.pe_list, list) {
> +			if (pe->rid == ((pdev->bus->number << 8) |
> +			    (pdev->devfn & 0xff))) {
> +				pe->pdev = pdev;
> +				break;
> +			}
> +		}
> +	}
> +#endif /* CONFIG_PCI_IOV */

It would be nice to split this into a helper.  And I think using
IS_ENABLED we might not even need ifdefs:

static void pnv_pci_dma_fixup_vfs(struct pci_dev *pdev)
{
	struct pnv_ioda_pe *pe;

	list_for_each_entry(pe, &phb->ioda.pe_list, list) {
		if (pe->rid ==
		    ((pdev->bus->number << 8) | (pdev->devfn & 0xff))) {
			pe->pdev = pdev;
			break;
	}
}


...

	if (IS_ENABLED(CONFIG_PCI_IOV) && pdev->is_virtfn)
		pnv_pci_dma_fixup_vfs(pdev);