From: Rob Herring <robh@kernel.org>
Date: Mon, 28 Oct 2019 11:32:46 -0500
Subject: PCI: xilinx-nwl: Use pci_parse_request_of_pci_ranges()
Git-commit: 3c65ebff8faedfc3386e6e1ad91adf2bdb8eeaa7
Patch-mainline: v5.5-rc1
References: jsc#SLE-7772

Convert the xilinx-nwl 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.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andrew Murray <andrew.murray@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Michal Simek <michal.simek@xilinx.com>

Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/pci/controller/pcie-xilinx-nwl.c | 20 ++++----------------
 1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/drivers/pci/controller/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c
index 45c0f344ccd1..e135a4b60489 100644
--- a/drivers/pci/controller/pcie-xilinx-nwl.c
+++ b/drivers/pci/controller/pcie-xilinx-nwl.c
@@ -821,8 +821,6 @@ static int nwl_pcie_probe(struct platform_device *pdev)
 	struct pci_bus *child;
 	struct pci_host_bridge *bridge;
 	int err;
-	resource_size_t iobase = 0;
-	LIST_HEAD(res);
 
 	bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
 	if (!bridge)
@@ -845,24 +843,18 @@ static int nwl_pcie_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &res,
-						    &iobase);
+	err = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL);
 	if (err) {
 		dev_err(dev, "Getting bridge resources failed\n");
 		return err;
 	}
 
-	err = devm_request_pci_bus_resources(dev, &res);
-	if (err)
-		goto error;
-
 	err = nwl_pcie_init_irq_domain(pcie);
 	if (err) {
 		dev_err(dev, "Failed creating IRQ Domain\n");
-		goto error;
+		return err;
 	}
 
-	list_splice_init(&res, &bridge->windows);
 	bridge->dev.parent = dev;
 	bridge->sysdata = pcie;
 	bridge->busnr = pcie->root_busno;
@@ -874,13 +866,13 @@ static int nwl_pcie_probe(struct platform_device *pdev)
 		err = nwl_pcie_enable_msi(pcie);
 		if (err < 0) {
 			dev_err(dev, "failed to enable MSI support: %d\n", err);
-			goto error;
+			return err;
 		}
 	}
 
 	err = pci_scan_root_bus_bridge(bridge);
 	if (err)
-		goto error;
+		return err;
 
 	bus = bridge->bus;
 
@@ -889,10 +881,6 @@ static int nwl_pcie_probe(struct platform_device *pdev)
 		pcie_bus_configure_settings(child);
 	pci_bus_add_devices(bus);
 	return 0;
-
-error:
-	pci_free_resource_list(&res);
-	return err;
 }
 
 static struct platform_driver nwl_pcie_driver = {