revert pcie-patch (was only for using 3rd pcie-lane instead of usb)

Author: frank-w

drivers/pci/host/pcie-mediatek.c

@@ -333,23 +333,10 @@ static struct mtk_pcie_port *mtk_pcie_find_port(struct pci_bus *bus,
 {
 	struct mtk_pcie *pcie = bus->sysdata;
 	struct mtk_pcie_port *port;
-	struct pci_dev *dev;
-	struct pci_bus *pbus;
 
-	list_for_each_entry(port, &pcie->ports, list) {
-		if (bus->number == 0 && port->slot == PCI_SLOT(devfn)) {
+	list_for_each_entry(port, &pcie->ports, list)
+		if (port->slot == PCI_SLOT(devfn))
 			return port;
-		} else if (bus->number != 0) {
-			pbus = bus;
-			do {
-				dev = pbus->self;
-				if (port->slot == PCI_SLOT(dev->devfn))
-					return port;
-
-				pbus = dev->bus;
-			} while (dev->bus->number != 0);
-		}
-	}
 
 	return NULL;
 }
@@ -676,9 +663,6 @@ static void __iomem *mtk_pcie_map_bus(struct pci_bus *bus,
 {
 	struct mtk_pcie *pcie = bus->sysdata;
 
-	if (!mtk_pcie_find_port(bus, devfn))
-		return 0;
-
 	writel(PCIE_CONF_ADDR(where, PCI_FUNC(devfn), PCI_SLOT(devfn),
 			      bus->number), pcie->base + PCIE_CFG_ADDR);