[Very RFC 31/46] powernv/pci: Remove open-coded PE lookup in pnv_pci_ioda_dma_dev_setup()

[Christoph Hellwig]

On Wed, Nov 20, 2019 at 12:28:44PM +1100, Oliver O'Halloran wrote:
> Use the helper to look up the pnv_ioda_pe for the device we're configuring DMA
> for. In the VF case there's no need set pdn->pe_number since nothing looks at
> it any more.
> 
> Signed-off-by: Oliver O'Halloran <oohall at gmail.com>
> ---
>  arch/powerpc/platforms/powernv/pci-ioda.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
> index d4b5ee926222..98d858999a2d 100644
> --- a/arch/powerpc/platforms/powernv/pci-ioda.c
> +++ b/arch/powerpc/platforms/powernv/pci-ioda.c
> @@ -1709,10 +1709,9 @@ int pnv_pcibios_sriov_enable(struct pci_dev *pdev, u16 num_vfs)
>  
>  static void pnv_pci_ioda_dma_dev_setup(struct pnv_phb *phb, struct pci_dev *pdev)
>  {
> -	struct pci_dn *pdn = pci_get_pdn(pdev);
>  	struct pnv_ioda_pe *pe;
>  
> -	pe = &phb->ioda.pe_array[pdn->pe_number];
> +	pe = pnv_ioda_get_pe(pdev);

Nit: why not move the pe initialization to the line declaring the
variable?