On Wed, Oct 16, 2019 at 03:06:28PM -0500, Rob Herring wrote: > Convert the Faraday host bridge to use the common > pci_parse_request_of_pci_ranges(). > > There's no need to assign the resources to a temporary list first. Just > use bridge->windows directly and remove all the temporary list handling. > > Cc: Lorenzo Pieralisi <[email protected]> > Cc: Andrew Murray <[email protected]> > Cc: Bjorn Helgaas <[email protected]> > Signed-off-by: Rob Herring <[email protected]> > --- > v2: > - New patch >
Reviewed-by: Andrew Murray <[email protected]> > drivers/pci/controller/pci-ftpci100.c | 51 ++++++--------------------- > 1 file changed, 11 insertions(+), 40 deletions(-) > > diff --git a/drivers/pci/controller/pci-ftpci100.c > b/drivers/pci/controller/pci-ftpci100.c > index bf5ece5d9291..12bc7daef5b5 100644 > --- a/drivers/pci/controller/pci-ftpci100.c > +++ b/drivers/pci/controller/pci-ftpci100.c > @@ -430,10 +430,8 @@ static int faraday_pci_probe(struct platform_device > *pdev) > const struct faraday_pci_variant *variant = > of_device_get_match_data(dev); > struct resource *regs; > - resource_size_t io_base; > struct resource_entry *win; > struct faraday_pci *p; > - struct resource *mem; > struct resource *io; > struct pci_host_bridge *host; > struct clk *clk; > @@ -441,7 +439,6 @@ static int faraday_pci_probe(struct platform_device *pdev) > unsigned char cur_bus_speed = PCI_SPEED_33MHz; > int ret; > u32 val; > - LIST_HEAD(res); > > host = devm_pci_alloc_host_bridge(dev, sizeof(*p)); > if (!host) > @@ -480,44 +477,20 @@ static int faraday_pci_probe(struct platform_device > *pdev) > if (IS_ERR(p->base)) > return PTR_ERR(p->base); > > - ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, > - &res, &io_base); > + ret = pci_parse_request_of_pci_ranges(dev, &host->windows, NULL); > if (ret) > return ret; > > - ret = devm_request_pci_bus_resources(dev, &res); > - if (ret) > - return ret; > - > - /* Get the I/O and memory ranges from DT */ > - resource_list_for_each_entry(win, &res) { > - switch (resource_type(win->res)) { > - case IORESOURCE_IO: > - io = win->res; > - io->name = "Gemini PCI I/O"; > - if (!faraday_res_to_memcfg(io->start - win->offset, > - resource_size(io), &val)) { > - /* setup I/O space size */ > - writel(val, p->base + PCI_IOSIZE); > - } else { > - dev_err(dev, "illegal IO mem size\n"); > - return -EINVAL; > - } > - ret = devm_pci_remap_iospace(dev, io, io_base); > - if (ret) { > - dev_warn(dev, "error %d: failed to map resource > %pR\n", > - ret, io); > - continue; > - } > - break; > - case IORESOURCE_MEM: > - mem = win->res; > - mem->name = "Gemini PCI MEM"; > - break; > - case IORESOURCE_BUS: > - break; > - default: > - break; > + win = resource_list_get_entry_of_type(&host->windows, IORESOURCE_IO); > + if (win) { > + io = win->res; > + if (!faraday_res_to_memcfg(io->start - win->offset, > + resource_size(io), &val)) { > + /* setup I/O space size */ > + writel(val, p->base + PCI_IOSIZE); > + } else { > + dev_err(dev, "illegal IO mem size\n"); > + return -EINVAL; > } > } > > @@ -569,7 +542,6 @@ static int faraday_pci_probe(struct platform_device *pdev) > if (ret) > return ret; > > - list_splice_init(&res, &host->windows); > ret = pci_scan_root_bus_bridge(host); > if (ret) { > dev_err(dev, "failed to scan host: %d\n", ret); > @@ -581,7 +553,6 @@ static int faraday_pci_probe(struct platform_device *pdev) > > pci_bus_assign_resources(p->bus); > pci_bus_add_devices(p->bus); > - pci_free_resource_list(&res); > > return 0; > } > -- > 2.20.1
