On Wed, Oct 16, 2019 at 03:06:31PM -0500, Rob Herring wrote:
> Convert the Mobiveil 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: Karthikeyan Mitran <m.karthike...@mobiveil.co.in>
> Cc: Hou Zhiqiang <zhiqiang....@nxp.com>
> Cc: Lorenzo Pieralisi <lorenzo.pieral...@arm.com>
> Cc: Andrew Murray <andrew.mur...@arm.com>
> Cc: Bjorn Helgaas <bhelg...@google.com>
> Signed-off-by: Rob Herring <r...@kernel.org>
> ---
Reviewed-by: Andrew Murray <andrew.mur...@arm.com>
> v2:
> - New patch
>
> drivers/pci/controller/pcie-mobiveil.c | 26 +++++++-------------------
> 1 file changed, 7 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/pci/controller/pcie-mobiveil.c
> b/drivers/pci/controller/pcie-mobiveil.c
> index a45a6447b01d..4eab8624ce4d 100644
> --- a/drivers/pci/controller/pcie-mobiveil.c
> +++ b/drivers/pci/controller/pcie-mobiveil.c
> @@ -140,7 +140,6 @@ struct mobiveil_msi { /* MSI
> information */
>
> struct mobiveil_pcie {
> struct platform_device *pdev;
> - struct list_head resources;
> void __iomem *config_axi_slave_base; /* endpoint config base */
> void __iomem *csr_axi_slave_base; /* root port config base */
> void __iomem *apb_csr_base; /* MSI register base */
> @@ -575,6 +574,7 @@ static void mobiveil_pcie_enable_msi(struct mobiveil_pcie
> *pcie)
>
> static int mobiveil_host_init(struct mobiveil_pcie *pcie)
> {
> + struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
> u32 value, pab_ctrl, type;
> struct resource_entry *win;
>
> @@ -631,7 +631,7 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
> program_ib_windows(pcie, WIN_NUM_0, 0, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE);
>
> /* Get the I/O and memory ranges from DT */
> - resource_list_for_each_entry(win, &pcie->resources) {
> + resource_list_for_each_entry(win, &bridge->windows) {
> if (resource_type(win->res) == IORESOURCE_MEM)
> type = MEM_WINDOW_TYPE;
> else if (resource_type(win->res) == IORESOURCE_IO)
> @@ -857,7 +857,6 @@ static int mobiveil_pcie_probe(struct platform_device
> *pdev)
> struct pci_bus *child;
> struct pci_host_bridge *bridge;
> struct device *dev = &pdev->dev;
> - resource_size_t iobase;
> int ret;
>
> /* allocate the PCIe port */
> @@ -875,11 +874,8 @@ static int mobiveil_pcie_probe(struct platform_device
> *pdev)
> return ret;
> }
>
> - INIT_LIST_HEAD(&pcie->resources);
> -
> /* parse the host bridge base addresses from the device tree file */
> - ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
> - &pcie->resources, &iobase);
> + ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL);
> if (ret) {
> dev_err(dev, "Getting bridge resources failed\n");
> return ret;
> @@ -892,24 +888,19 @@ static int mobiveil_pcie_probe(struct platform_device
> *pdev)
> ret = mobiveil_host_init(pcie);
> if (ret) {
> dev_err(dev, "Failed to initialize host\n");
> - goto error;
> + return ret;
> }
>
> /* initialize the IRQ domains */
> ret = mobiveil_pcie_init_irq_domain(pcie);
> if (ret) {
> dev_err(dev, "Failed creating IRQ Domain\n");
> - goto error;
> + return ret;
> }
>
> irq_set_chained_handler_and_data(pcie->irq, mobiveil_pcie_isr, pcie);
>
> - ret = devm_request_pci_bus_resources(dev, &pcie->resources);
> - if (ret)
> - goto error;
> -
> /* Initialize bridge */
> - list_splice_init(&pcie->resources, &bridge->windows);
> bridge->dev.parent = dev;
> bridge->sysdata = pcie;
> bridge->busnr = pcie->root_bus_nr;
> @@ -920,13 +911,13 @@ static int mobiveil_pcie_probe(struct platform_device
> *pdev)
> ret = mobiveil_bringup_link(pcie);
> if (ret) {
> dev_info(dev, "link bring-up failed\n");
> - goto error;
> + return ret;
> }
>
> /* setup the kernel resources for the newly added PCIe root bus */
> ret = pci_scan_root_bus_bridge(bridge);
> if (ret)
> - goto error;
> + return ret;
>
> bus = bridge->bus;
>
> @@ -936,9 +927,6 @@ static int mobiveil_pcie_probe(struct platform_device
> *pdev)
> pci_bus_add_devices(bus);
>
> return 0;
> -error:
> - pci_free_resource_list(&pcie->resources);
> - return ret;
> }
>
> static const struct of_device_id mobiveil_pcie_of_match[] = {
> --
> 2.20.1
