On Fri, 2018-09-28 at 23:41 +0800, Ryder Lee wrote:
> On Fri, 2018-09-28 at 18:04 +0800, honghui.zhang@xxxxxxxxxxxx wrote:
> > From: Honghui Zhang <honghui.zhang@xxxxxxxxxxxx>
> >
> > Part of mtk_pcie_register_host is an open-coded version of
> > pci_host_probe(). So instead of duplicating this code, use
> > pci_host_probe() directly and remove mtk_pcie_register_host.
> >
> > Signed-off-by: Honghui Zhang <honghui.zhang@xxxxxxxxxxxx>
> > ---
> > drivers/pci/controller/pcie-mediatek.c | 37 ++++++++--------------------------
> > 1 file changed, 8 insertions(+), 29 deletions(-)
> >
> > diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
> > index e2c4127..cbf4543 100644
> > --- a/drivers/pci/controller/pcie-mediatek.c
> > +++ b/drivers/pci/controller/pcie-mediatek.c
> > @@ -1125,34 +1125,6 @@ static int mtk_pcie_request_resources(struct mtk_pcie *pcie)
> > return 0;
> > }
> >
> > -static int mtk_pcie_register_host(struct pci_host_bridge *host)
> > -{
> > - struct mtk_pcie *pcie = pci_host_bridge_priv(host);
> > - struct pci_bus *child;
> > - int err;
>
> To make the patch simple, could we keep these host->*. and return
> pci_host_probe() directly?
Well, I guess it's not necessary to keep the mtk_pcie_register_host just
wrap pci_host_probe(). Put those host->* directly in probe function is
no harm, it will reduce one function call and related parameter passing.
I may update this patch to keep the mtk_pcie_register_host if you insist
though I prefer the current way.
Thanks.
>
> > - host->busnr = pcie->busn.start;
> > - host->dev.parent = pcie->dev;
> > - host->ops = pcie->soc->ops;
> > - host->map_irq = of_irq_parse_and_map_pci;
> > - host->swizzle_irq = pci_common_swizzle;
> > - host->sysdata = pcie;
> > -
> > - err = pci_scan_root_bus_bridge(host);
> > - if (err < 0)
> > - return err;
> > -
> > - pci_bus_size_bridges(host->bus);
> > - pci_bus_assign_resources(host->bus);
> > -
> > - list_for_each_entry(child, &host->bus->children, node)
> > - pcie_bus_configure_settings(child);
> > -
> > - pci_bus_add_devices(host->bus);
> > -
> > - return 0;
> > -}
> > -
> > static int mtk_pcie_probe(struct platform_device *pdev)
> > {
> > struct device *dev = &pdev->dev;
> > @@ -1179,7 +1151,14 @@ static int mtk_pcie_probe(struct platform_device *pdev)
> > if (err)
> > goto put_resources;
> >
> > - err = mtk_pcie_register_host(host);
> > + host->busnr = pcie->busn.start;
> > + host->dev.parent = pcie->dev;
> > + host->ops = pcie->soc->ops;
> > + host->map_irq = of_irq_parse_and_map_pci;
> > + host->swizzle_irq = pci_common_swizzle;
> > + host->sysdata = pcie;
> > +
> > + err = pci_host_probe(host);
> > if (err)
> > goto put_resources;
> >
>
>
