ar71xx: support for D-LINK DIR-615 rev. E4

[openwrt.git] / target / linux / brcm47xx / patches-3.2 / 0000-pci-backport.patch

--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -551,3 +551,15 @@ When:      3.5
 Why:   The iwlagn module has been renamed iwlwifi.  The alias will be around
        for backward compatibility for several cycles and then dropped.
 Who:   Don Fry <donald.h.fry@intel.com>
+
+----------------------------
+
+What:  pci_scan_bus_parented()
+When:  3.5
+Why:   The pci_scan_bus_parented() interface creates a new root bus.  The
+       bus is created with default resources (ioport_resource and
+       iomem_resource) that are always wrong, so we rely on arch code to
+       correct them later.  Callers of pci_scan_bus_parented() should
+       convert to using pci_scan_root_bus() so they can supply a list of
+       bus resources when the bus is created.
+Who:   Bjorn Helgaas <bhelgaas@google.com>
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -281,27 +281,9 @@ pcibios_fixup_device_resources(struct pc
 void __devinit
 pcibios_fixup_bus(struct pci_bus *bus)
 {
-       /* Propagate hose info into the subordinate devices.  */
-
-       struct pci_controller *hose = bus->sysdata;
        struct pci_dev *dev = bus->self;
 
-       if (!dev) {
-               /* Root bus. */
-               u32 pci_mem_end;
-               u32 sg_base = hose->sg_pci ? hose->sg_pci->dma_base : ~0;
-               unsigned long end;
-
-               bus->resource[0] = hose->io_space;
-               bus->resource[1] = hose->mem_space;
-
-               /* Adjust hose mem_space limit to prevent PCI allocations
-                  in the iommu windows. */
-               pci_mem_end = min((u32)__direct_map_base, sg_base) - 1;
-               end = hose->mem_space->start + pci_mem_end;
-               if (hose->mem_space->end > end)
-                       hose->mem_space->end = end;
-       } else if (pci_probe_only &&
+       if (pci_probe_only && dev &&
                   (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
                pci_read_bridge_bases(bus);
                pcibios_fixup_device_resources(dev, bus);
@@ -414,13 +396,31 @@ void __init
 common_init_pci(void)
 {
        struct pci_controller *hose;
+       struct list_head resources;
        struct pci_bus *bus;
        int next_busno;
        int need_domain_info = 0;
+       u32 pci_mem_end;
+       u32 sg_base;
+       unsigned long end;
 
        /* Scan all of the recorded PCI controllers.  */
        for (next_busno = 0, hose = hose_head; hose; hose = hose->next) {
-               bus = pci_scan_bus(next_busno, alpha_mv.pci_ops, hose);
+               sg_base = hose->sg_pci ? hose->sg_pci->dma_base : ~0;
+
+               /* Adjust hose mem_space limit to prevent PCI allocations
+                  in the iommu windows. */
+               pci_mem_end = min((u32)__direct_map_base, sg_base) - 1;
+               end = hose->mem_space->start + pci_mem_end;
+               if (hose->mem_space->end > end)
+                       hose->mem_space->end = end;
+
+               INIT_LIST_HEAD(&resources);
+               pci_add_resource(&resources, hose->io_space);
+               pci_add_resource(&resources, hose->mem_space);
+
+               bus = pci_scan_root_bus(NULL, next_busno, alpha_mv.pci_ops,
+                                       hose, &resources);
                hose->bus = bus;
                hose->need_domain_info = need_domain_info;
                next_busno = bus->subordinate + 1;
--- a/arch/arm/common/it8152.c
+++ b/arch/arm/common/it8152.c
@@ -299,8 +299,8 @@ int __init it8152_pci_setup(int nr, stru
                goto err1;
        }
 
-       sys->resource[0] = &it8152_io;
-       sys->resource[1] = &it8152_mem;
+       pci_add_resource(&sys->resources, &it8152_io);
+       pci_add_resource(&sys->resources, &it8152_mem);
 
        if (platform_notify || platform_notify_remove) {
                printk(KERN_ERR "PCI: Can't use platform_notify\n");
@@ -352,7 +352,7 @@ void pcibios_set_master(struct pci_dev *
 
 struct pci_bus * __init it8152_pci_scan_bus(int nr, struct pci_sys_data *sys)
 {
-       return pci_scan_bus(nr, &it8152_ops, sys);
+       return pci_scan_root_bus(NULL, nr, &it8152_ops, sys, &sys->resources);
 }
 
 EXPORT_SYMBOL(dma_set_coherent_mask);
--- a/arch/arm/common/via82c505.c
+++ b/arch/arm/common/via82c505.c
@@ -86,7 +86,8 @@ int __init via82c505_setup(int nr, struc
 struct pci_bus * __init via82c505_scan_bus(int nr, struct pci_sys_data *sysdata)
 {
        if (nr == 0)
-               return pci_scan_bus(0, &via82c505_ops, sysdata);
+               return pci_scan_root_bus(NULL, 0, &via82c505_ops, sysdata,
+                                        &sysdata->resources);
 
        return NULL;
 }
--- a/arch/arm/include/asm/mach/pci.h
+++ b/arch/arm/include/asm/mach/pci.h
@@ -40,7 +40,7 @@ struct pci_sys_data {
        u64             mem_offset;     /* bus->cpu memory mapping offset       */
        unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
        struct pci_bus  *bus;           /* PCI bus                              */
-       struct resource *resource[3];   /* Primary PCI bus resources            */
+       struct list_head resources;     /* root bus resources (apertures)       */
                                        /* Bridge swizzling                     */
        u8              (*swizzle)(struct pci_dev *, u8 *);
                                        /* IRQ mapping                          */
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -316,21 +316,6 @@ pdev_fixup_device_resources(struct pci_s
        }
 }
 
-static void __devinit
-pbus_assign_bus_resources(struct pci_bus *bus, struct pci_sys_data *root)
-{
-       struct pci_dev *dev = bus->self;
-       int i;
-
-       if (!dev) {
-               /*
-                * Assign root bus resources.
-                */
-               for (i = 0; i < 3; i++)
-                       bus->resource[i] = root->resource[i];
-       }
-}
-
 /*
  * pcibios_fixup_bus - Called after each bus is probed,
  * but before its children are examined.
@@ -341,8 +326,6 @@ void pcibios_fixup_bus(struct pci_bus *b
        struct pci_dev *dev;
        u16 features = PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_FAST_BACK;
 
-       pbus_assign_bus_resources(bus, root);
-
        /*
         * Walk the devices on this bus, working out what we can
         * and can't support.
@@ -508,12 +491,18 @@ static void __init pcibios_init_hw(struc
                sys->busnr   = busnr;
                sys->swizzle = hw->swizzle;
                sys->map_irq = hw->map_irq;
-               sys->resource[0] = &ioport_resource;
-               sys->resource[1] = &iomem_resource;
+               INIT_LIST_HEAD(&sys->resources);
 
                ret = hw->setup(nr, sys);
 
                if (ret > 0) {
+                       if (list_empty(&sys->resources)) {
+                               pci_add_resource(&sys->resources,
+                                                &ioport_resource);
+                               pci_add_resource(&sys->resources,
+                                                &iomem_resource);
+                       }
+
                        sys->bus = hw->scan(nr, sys);
 
                        if (!sys->bus)
--- a/arch/arm/mach-cns3xxx/pcie.c
+++ b/arch/arm/mach-cns3xxx/pcie.c
@@ -151,13 +151,12 @@ static int cns3xxx_pci_setup(int nr, str
        struct cns3xxx_pcie *cnspci = sysdata_to_cnspci(sys);
        struct resource *res_io = &cnspci->res_io;
        struct resource *res_mem = &cnspci->res_mem;
-       struct resource **sysres = sys->resource;
 
        BUG_ON(request_resource(&iomem_resource, res_io) ||
               request_resource(&iomem_resource, res_mem));
 
-       sysres[0] = res_io;
-       sysres[1] = res_mem;
+       pci_add_resource(&sys->resources, res_io);
+       pci_add_resource(&sys->resources, res_mem);
 
        return 1;
 }
@@ -169,7 +168,8 @@ static struct pci_ops cns3xxx_pcie_ops =
 
 static struct pci_bus *cns3xxx_pci_scan_bus(int nr, struct pci_sys_data *sys)
 {
-       return pci_scan_bus(sys->busnr, &cns3xxx_pcie_ops, sys);
+       return pci_scan_root_bus(NULL, sys->busnr, &cns3xxx_pcie_ops, sys,
+                                &sys->resources);
 }
 
 static int cns3xxx_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
--- a/arch/arm/mach-dove/pcie.c
+++ b/arch/arm/mach-dove/pcie.c
@@ -69,7 +69,7 @@ static int __init dove_pcie_setup(int nr
        pp->res[0].flags = IORESOURCE_IO;
        if (request_resource(&ioport_resource, &pp->res[0]))
                panic("Request PCIe IO resource failed\n");
-       sys->resource[0] = &pp->res[0];
+       pci_add_resource(&sys->resources, &pp->res[0]);
 
        /*
         * IORESOURCE_MEM
@@ -88,9 +88,7 @@ static int __init dove_pcie_setup(int nr
        pp->res[1].flags = IORESOURCE_MEM;
        if (request_resource(&iomem_resource, &pp->res[1]))
                panic("Request PCIe Memory resource failed\n");
-       sys->resource[1] = &pp->res[1];
-
-       sys->resource[2] = NULL;
+       pci_add_resource(&sys->resources, &pp->res[1]);
 
        return 1;
 }
@@ -184,7 +182,8 @@ dove_pcie_scan_bus(int nr, struct pci_sy
        struct pci_bus *bus;
 
        if (nr < num_pcie_ports) {
-               bus = pci_scan_bus(sys->busnr, &pcie_ops, sys);
+               bus = pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+                                       &sys->resources);
        } else {
                bus = NULL;
                BUG();
--- a/arch/arm/mach-footbridge/dc21285.c
+++ b/arch/arm/mach-footbridge/dc21285.c
@@ -275,9 +275,9 @@ int __init dc21285_setup(int nr, struct
        allocate_resource(&iomem_resource, &res[0], 0x40000000,
                          0x80000000, 0xffffffff, 0x40000000, NULL, NULL);
 
-       sys->resource[0] = &ioport_resource;
-       sys->resource[1] = &res[0];
-       sys->resource[2] = &res[1];
+       pci_add_resource(&sys->resources, &ioport_resource);
+       pci_add_resource(&sys->resources, &res[0]);
+       pci_add_resource(&sys->resources, &res[1]);
        sys->mem_offset  = DC21285_PCI_MEM;
 
        return 1;
@@ -285,7 +285,7 @@ int __init dc21285_setup(int nr, struct
 
 struct pci_bus * __init dc21285_scan_bus(int nr, struct pci_sys_data *sys)
 {
-       return pci_scan_bus(0, &dc21285_ops, sys);
+       return pci_scan_root_bus(NULL, 0, &dc21285_ops, sys, &sys->resources);
 }
 
 #define dc21285_request_irq(_a, _b, _c, _d, _e) \
--- a/arch/arm/mach-integrator/pci_v3.c
+++ b/arch/arm/mach-integrator/pci_v3.c
@@ -359,7 +359,7 @@ static struct resource pre_mem = {
        .flags  = IORESOURCE_MEM | IORESOURCE_PREFETCH,
 };
 
-static int __init pci_v3_setup_resources(struct resource **resource)
+static int __init pci_v3_setup_resources(struct pci_sys_data *sys)
 {
        if (request_resource(&iomem_resource, &non_mem)) {
                printk(KERN_ERR "PCI: unable to allocate non-prefetchable "
@@ -374,13 +374,13 @@ static int __init pci_v3_setup_resources
        }
 
        /*
-        * bus->resource[0] is the IO resource for this bus
-        * bus->resource[1] is the mem resource for this bus
-        * bus->resource[2] is the prefetch mem resource for this bus
+        * the IO resource for this bus
+        * the mem resource for this bus
+        * the prefetch mem resource for this bus
         */
-       resource[0] = &ioport_resource;
-       resource[1] = &non_mem;
-       resource[2] = &pre_mem;
+       pci_add_resource(&sys->resources, &ioport_resource);
+       pci_add_resource(&sys->resources, &non_mem);
+       pci_add_resource(&sys->resources, &pre_mem);
 
        return 1;
 }
@@ -481,7 +481,7 @@ int __init pci_v3_setup(int nr, struct p
 
        if (nr == 0) {
                sys->mem_offset = PHYS_PCI_MEM_BASE;
-               ret = pci_v3_setup_resources(sys->resource);
+               ret = pci_v3_setup_resources(sys);
        }
 
        return ret;
@@ -489,7 +489,8 @@ int __init pci_v3_setup(int nr, struct p
 
 struct pci_bus * __init pci_v3_scan_bus(int nr, struct pci_sys_data *sys)
 {
-       return pci_scan_bus(sys->busnr, &pci_v3_ops, sys);
+       return pci_scan_root_bus(NULL, sys->busnr, &pci_v3_ops, sys,
+                                &sys->resources);
 }
 
 /*
--- a/arch/arm/mach-iop13xx/pci.c
+++ b/arch/arm/mach-iop13xx/pci.c
@@ -537,14 +537,14 @@ struct pci_bus *iop13xx_scan_bus(int nr,
                        while(time_before(jiffies, atux_trhfa_timeout))
                                udelay(100);
 
-               bus = pci_bus_atux = pci_scan_bus(sys->busnr,
-                                                 &iop13xx_atux_ops,
-                                                 sys);
+               bus = pci_bus_atux = pci_scan_root_bus(NULL, sys->busnr,
+                                                      &iop13xx_atux_ops,
+                                                      sys, &sys->resources);
                break;
        case IOP13XX_INIT_ATU_ATUE:
-               bus = pci_bus_atue = pci_scan_bus(sys->busnr,
-                                                 &iop13xx_atue_ops,
-                                                 sys);
+               bus = pci_bus_atue = pci_scan_root_bus(NULL, sys->busnr,
+                                                      &iop13xx_atue_ops,
+                                                      sys, &sys->resources);
                break;
        }
 
@@ -1084,9 +1084,8 @@ int iop13xx_pci_setup(int nr, struct pci
        request_resource(&ioport_resource, &res[0]);
        request_resource(&iomem_resource, &res[1]);
 
-       sys->resource[0] = &res[0];
-       sys->resource[1] = &res[1];
-       sys->resource[2] = NULL;
+       pci_add_resource(&sys->resources, &res[0]);
+       pci_add_resource(&sys->resources, &res[1]);
 
        return 1;
 }
--- a/arch/arm/mach-ixp2000/enp2611.c
+++ b/arch/arm/mach-ixp2000/enp2611.c
@@ -145,7 +145,8 @@ static struct pci_ops enp2611_pci_ops =
 static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
                                                struct pci_sys_data *sys)
 {
-       return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys);
+       return pci_scan_root_bus(NULL, sys->busnr, &enp2611_pci_ops, sys,
+                                &sys->resources);
 }
 
 static int __init enp2611_pci_map_irq(const struct pci_dev *dev, u8 slot,
--- a/arch/arm/mach-ixp2000/pci.c
+++ b/arch/arm/mach-ixp2000/pci.c
@@ -132,7 +132,8 @@ static struct pci_ops ixp2000_pci_ops =
 
 struct pci_bus *ixp2000_pci_scan_bus(int nr, struct pci_sys_data *sysdata)
 {
-       return pci_scan_bus(sysdata->busnr, &ixp2000_pci_ops, sysdata);
+       return pci_scan_root_bus(NULL, sysdata->busnr, &ixp2000_pci_ops,
+                                sysdata, &sysdata->resources);
 }
 
 
@@ -242,9 +243,8 @@ int ixp2000_pci_setup(int nr, struct pci
        if (nr >= 1)
                return 0;
 
-       sys->resource[0] = &ixp2000_pci_io_space;
-       sys->resource[1] = &ixp2000_pci_mem_space;
-       sys->resource[2] = NULL;
+       pci_add_resource(&sys->resources, &ixp2000_pci_io_space);
+       pci_add_resource(&sys->resources, &ixp2000_pci_mem_space);
 
        return 1;
 }
--- a/arch/arm/mach-ixp23xx/pci.c
+++ b/arch/arm/mach-ixp23xx/pci.c
@@ -143,7 +143,8 @@ struct pci_ops ixp23xx_pci_ops = {
 
 struct pci_bus *ixp23xx_pci_scan_bus(int nr, struct pci_sys_data *sysdata)
 {
-       return pci_scan_bus(sysdata->busnr, &ixp23xx_pci_ops, sysdata);
+       return pci_scan_root_bus(NULL, sysdata->busnr, &ixp23xx_pci_ops,
+                                sysdata, &sysdata->resources);
 }
 
 int ixp23xx_pci_abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
@@ -280,9 +281,8 @@ int ixp23xx_pci_setup(int nr, struct pci
        if (nr >= 1)
                return 0;
 
-       sys->resource[0] = &ixp23xx_pci_io_space;
-       sys->resource[1] = &ixp23xx_pci_mem_space;
-       sys->resource[2] = NULL;
+       pci_add_resource(&sys->resources, &ixp23xx_pci_io_space);
+       pci_add_resource(&sys->resources, &ixp23xx_pci_mem_space);
 
        return 1;
 }
--- a/arch/arm/mach-ixp4xx/common-pci.c
+++ b/arch/arm/mach-ixp4xx/common-pci.c
@@ -472,9 +472,8 @@ int ixp4xx_setup(int nr, struct pci_sys_
        request_resource(&ioport_resource, &res[0]);
        request_resource(&iomem_resource, &res[1]);
 
-       sys->resource[0] = &res[0];
-       sys->resource[1] = &res[1];
-       sys->resource[2] = NULL;
+       pci_add_resource(&sys->resources, &res[0]);
+       pci_add_resource(&sys->resources, &res[1]);
 
        platform_notify = ixp4xx_pci_platform_notify;
        platform_notify_remove = ixp4xx_pci_platform_notify_remove;
@@ -484,7 +483,8 @@ int ixp4xx_setup(int nr, struct pci_sys_
 
 struct pci_bus * __devinit ixp4xx_scan_bus(int nr, struct pci_sys_data *sys)
 {
-       return pci_scan_bus(sys->busnr, &ixp4xx_ops, sys);
+       return pci_scan_root_bus(NULL, sys->busnr, &ixp4xx_ops, sys,
+                                &sys->resources);
 }
 
 int dma_set_coherent_mask(struct device *dev, u64 mask)
--- a/arch/arm/mach-kirkwood/pcie.c
+++ b/arch/arm/mach-kirkwood/pcie.c
@@ -198,9 +198,8 @@ static int __init kirkwood_pcie_setup(in
        if (request_resource(&iomem_resource, &pp->res[1]))
                panic("Request PCIe%d Memory resource failed\n", index);
 
-       sys->resource[0] = &pp->res[0];
-       sys->resource[1] = &pp->res[1];
-       sys->resource[2] = NULL;
+       pci_add_resource(&sys->resources, &pp->res[0]);
+       pci_add_resource(&sys->resources, &pp->res[1]);
        sys->io_offset = 0;
 
        /*
@@ -236,7 +235,8 @@ kirkwood_pcie_scan_bus(int nr, struct pc
        struct pci_bus *bus;
 
        if (nr < num_pcie_ports) {
-               bus = pci_scan_bus(sys->busnr, &pcie_ops, sys);
+               bus = pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+                                       &sys->resources);
        } else {
                bus = NULL;
                BUG();
--- a/arch/arm/mach-ks8695/pci.c
+++ b/arch/arm/mach-ks8695/pci.c
@@ -143,7 +143,8 @@ static struct pci_ops ks8695_pci_ops = {
 
 static struct pci_bus* __init ks8695_pci_scan_bus(int nr, struct pci_sys_data *sys)
 {
-       return pci_scan_bus(sys->busnr, &ks8695_pci_ops, sys);
+       return pci_scan_root_bus(NULL, sys->busnr, &ks8695_pci_ops, sys,
+                                &sys->resources);
 }
 
 static struct resource pci_mem = {
@@ -168,9 +169,8 @@ static int __init ks8695_pci_setup(int n
        request_resource(&iomem_resource, &pci_mem);
        request_resource(&ioport_resource, &pci_io);
 
-       sys->resource[0] = &pci_io;
-       sys->resource[1] = &pci_mem;
-       sys->resource[2] = NULL;
+       pci_add_resource(&sys->resources, &pci_io);
+       pci_add_resource(&sys->resources, &pci_mem);
 
        /* Assign and enable processor bridge */
        ks8695_local_writeconfig(PCI_BASE_ADDRESS_0, KS8695_PCIMEM_PA);
--- a/arch/arm/mach-mv78xx0/pcie.c
+++ b/arch/arm/mach-mv78xx0/pcie.c
@@ -155,9 +155,8 @@ static int __init mv78xx0_pcie_setup(int
        orion_pcie_set_local_bus_nr(pp->base, sys->busnr);
        orion_pcie_setup(pp->base, &mv78xx0_mbus_dram_info);
 
-       sys->resource[0] = &pp->res[0];
-       sys->resource[1] = &pp->res[1];
-       sys->resource[2] = NULL;
+       pci_add_resource(&sys->resources, &pp->res[0]);
+       pci_add_resource(&sys->resources, &pp->res[1]);
 
        return 1;
 }
@@ -251,7 +250,8 @@ mv78xx0_pcie_scan_bus(int nr, struct pci
        struct pci_bus *bus;
 
        if (nr < num_pcie_ports) {
-               bus = pci_scan_bus(sys->busnr, &pcie_ops, sys);
+               bus = pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+                                       &sys->resources);
        } else {
                bus = NULL;
                BUG();
--- a/arch/arm/mach-orion5x/pci.c
+++ b/arch/arm/mach-orion5x/pci.c
@@ -176,7 +176,7 @@ static int __init pcie_setup(struct pci_
        res[0].end = res[0].start + ORION5X_PCIE_IO_SIZE - 1;
        if (request_resource(&ioport_resource, &res[0]))
                panic("Request PCIe IO resource failed\n");
-       sys->resource[0] = &res[0];
+       pci_add_resource(&sys->resources, &res[0]);
 
        /*
         * IORESOURCE_MEM
@@ -187,9 +187,8 @@ static int __init pcie_setup(struct pci_
        res[1].end = res[1].start + ORION5X_PCIE_MEM_SIZE - 1;
        if (request_resource(&iomem_resource, &res[1]))
                panic("Request PCIe Memory resource failed\n");
-       sys->resource[1] = &res[1];
+       pci_add_resource(&sys->resources, &res[1]);
 
-       sys->resource[2] = NULL;
        sys->io_offset = 0;
 
        return 1;
@@ -505,7 +504,7 @@ static int __init pci_setup(struct pci_s
        res[0].end = res[0].start + ORION5X_PCI_IO_SIZE - 1;
        if (request_resource(&ioport_resource, &res[0]))
                panic("Request PCI IO resource failed\n");
-       sys->resource[0] = &res[0];
+       pci_add_resource(&sys->resources, &res[0]);
 
        /*
         * IORESOURCE_MEM
@@ -516,9 +515,8 @@ static int __init pci_setup(struct pci_s
        res[1].end = res[1].start + ORION5X_PCI_MEM_SIZE - 1;
        if (request_resource(&iomem_resource, &res[1]))
                panic("Request PCI Memory resource failed\n");
-       sys->resource[1] = &res[1];
+       pci_add_resource(&sys->resources, &res[1]);
 
-       sys->resource[2] = NULL;
        sys->io_offset = 0;
 
        return 1;
@@ -579,9 +577,11 @@ struct pci_bus __init *orion5x_pci_sys_s
        struct pci_bus *bus;
 
        if (nr == 0) {
-               bus = pci_scan_bus(sys->busnr, &pcie_ops, sys);
+               bus = pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+                                       &sys->resources);
        } else if (nr == 1 && !orion5x_pci_disabled) {
-               bus = pci_scan_bus(sys->busnr, &pci_ops, sys);
+               bus = pci_scan_root_bus(NULL, sys->busnr, &pci_ops, sys,
+                                       &sys->resources);
        } else {
                bus = NULL;
                BUG();
--- a/arch/arm/mach-sa1100/pci-nanoengine.c
+++ b/arch/arm/mach-sa1100/pci-nanoengine.c
@@ -131,7 +131,8 @@ static int __init pci_nanoengine_map_irq
 
 struct pci_bus * __init pci_nanoengine_scan_bus(int nr, struct pci_sys_data *sys)
 {
-       return pci_scan_bus(sys->busnr, &pci_nano_ops, sys);
+       return pci_scan_root_bus(NULL, sys->busnr, &pci_nano_ops, sys,
+                                &sys->resources);
 }
 
 static struct resource pci_io_ports = {
@@ -226,7 +227,7 @@ static struct resource pci_prefetchable_
        .flags  = IORESOURCE_MEM  | IORESOURCE_PREFETCH,
 };
 
-static int __init pci_nanoengine_setup_resources(struct resource **resource)
+static int __init pci_nanoengine_setup_resources(struct pci_sys_data *sys)
 {
        if (request_resource(&ioport_resource, &pci_io_ports)) {
                printk(KERN_ERR "PCI: unable to allocate io port region\n");
@@ -243,9 +244,9 @@ static int __init pci_nanoengine_setup_r
                printk(KERN_ERR "PCI: unable to allocate prefetchable\n");
                return -EBUSY;
        }
-       resource[0] = &pci_io_ports;
-       resource[1] = &pci_non_prefetchable_memory;
-       resource[2] = &pci_prefetchable_memory;
+       pci_add_resource(&sys->resources, &pci_io_ports);
+       pci_add_resource(&sys->resources, &pci_non_prefetchable_memory);
+       pci_add_resource(&sys->resources, &pci_prefetchable_memory);
 
        return 1;
 }
@@ -260,7 +261,7 @@ int __init pci_nanoengine_setup(int nr,
        if (nr == 0) {
                sys->mem_offset = NANO_PCI_MEM_RW_PHYS;
                sys->io_offset = 0x400;
-               ret = pci_nanoengine_setup_resources(sys->resource);
+               ret = pci_nanoengine_setup_resources(sys);
                /* Enable alternate memory bus master mode, see
                 * "Intel StrongARM SA1110 Developer's Manual",
                 * section 10.8, "Alternate Memory Bus Master Mode". */
--- a/arch/arm/mach-tegra/pcie.c
+++ b/arch/arm/mach-tegra/pcie.c
@@ -409,7 +409,7 @@ static int tegra_pcie_setup(int nr, stru
        pp->res[0].flags = IORESOURCE_IO;
        if (request_resource(&ioport_resource, &pp->res[0]))
                panic("Request PCIe IO resource failed\n");
-       sys->resource[0] = &pp->res[0];
+       pci_add_resource(&sys->resources, &pp->res[0]);
 
        /*
         * IORESOURCE_MEM
@@ -428,7 +428,7 @@ static int tegra_pcie_setup(int nr, stru
        pp->res[1].flags = IORESOURCE_MEM;
        if (request_resource(&iomem_resource, &pp->res[1]))
                panic("Request PCIe Memory resource failed\n");
-       sys->resource[1] = &pp->res[1];
+       pci_add_resource(&sys->resources, &pp->res[1]);
 
        /*
         * IORESOURCE_MEM | IORESOURCE_PREFETCH
@@ -447,7 +447,7 @@ static int tegra_pcie_setup(int nr, stru
        pp->res[2].flags = IORESOURCE_MEM | IORESOURCE_PREFETCH;
        if (request_resource(&iomem_resource, &pp->res[2]))
                panic("Request PCIe Prefetch Memory resource failed\n");
-       sys->resource[2] = &pp->res[2];
+       pci_add_resource(&sys->resources, &pp->res[2]);
 
        return 1;
 }
@@ -468,7 +468,8 @@ static struct pci_bus __init *tegra_pcie
        pp = tegra_pcie.port + nr;
        pp->root_bus_nr = sys->busnr;
 
-       return pci_scan_bus(sys->busnr, &tegra_pcie_ops, sys);
+       return pci_scan_root_bus(NULL, sys->busnr, &tegra_pcie_ops, sys,
+                                &sys->resources);
 }
 
 static struct hw_pci tegra_pcie_hw __initdata = {
--- a/arch/arm/mach-versatile/pci.c
+++ b/arch/arm/mach-versatile/pci.c
@@ -191,7 +191,7 @@ static struct resource pre_mem = {
        .flags  = IORESOURCE_MEM | IORESOURCE_PREFETCH,
 };
 
-static int __init pci_versatile_setup_resources(struct resource **resource)
+static int __init pci_versatile_setup_resources(struct list_head *resources)
 {
        int ret = 0;
 
@@ -215,13 +215,13 @@ static int __init pci_versatile_setup_re
        }
 
        /*
-        * bus->resource[0] is the IO resource for this bus
-        * bus->resource[1] is the mem resource for this bus
-        * bus->resource[2] is the prefetch mem resource for this bus
+        * the IO resource for this bus
+        * the mem resource for this bus
+        * the prefetch mem resource for this bus
         */
-       resource[0] = &io_mem;
-       resource[1] = &non_mem;
-       resource[2] = &pre_mem;
+       pci_add_resource(resources, &io_mem);
+       pci_add_resource(resources, &non_mem);
+       pci_add_resource(resources, &pre_mem);
 
        goto out;
 
@@ -250,7 +250,7 @@ int __init pci_versatile_setup(int nr, s
 
        if (nr == 0) {
                sys->mem_offset = 0;
-               ret = pci_versatile_setup_resources(sys->resource);
+               ret = pci_versatile_setup_resources(&sys->resources);
                if (ret < 0) {
                        printk("pci_versatile_setup: resources... oops?\n");
                        goto out;
@@ -306,7 +306,8 @@ int __init pci_versatile_setup(int nr, s
 
 struct pci_bus * __init pci_versatile_scan_bus(int nr, struct pci_sys_data *sys)
 {
-       return pci_scan_bus(sys->busnr, &pci_versatile_ops, sys);
+       return pci_scan_root_bus(NULL, sys->busnr, &pci_versatile_ops, sys,
+                                &sys->resources);
 }
 
 void __init pci_versatile_preinit(void)
--- a/arch/arm/plat-iop/pci.c
+++ b/arch/arm/plat-iop/pci.c
@@ -215,16 +215,16 @@ int iop3xx_pci_setup(int nr, struct pci_
        sys->mem_offset = IOP3XX_PCI_LOWER_MEM_PA - *IOP3XX_OMWTVR0;
        sys->io_offset  = IOP3XX_PCI_LOWER_IO_PA - *IOP3XX_OIOWTVR;
 
-       sys->resource[0] = &res[0];
-       sys->resource[1] = &res[1];
-       sys->resource[2] = NULL;
+       pci_add_resource(&sys->resources, &res[0]);
+       pci_add_resource(&sys->resources, &res[1]);
 
        return 1;
 }
 
 struct pci_bus *iop3xx_pci_scan_bus(int nr, struct pci_sys_data *sys)
 {
-       return pci_scan_bus(sys->busnr, &iop3xx_ops, sys);
+       return pci_scan_root_bus(NULL, sys->busnr, &iop3xx_ops, sys,
+                                &sys->resources);
 }
 
 void __init iop3xx_atu_setup(void)
--- a/arch/frv/mb93090-mb00/pci-vdk.c
+++ b/arch/frv/mb93090-mb00/pci-vdk.c
@@ -327,11 +327,6 @@ void __init pcibios_fixup_bus(struct pci
        printk("### PCIBIOS_FIXUP_BUS(%d)\n",bus->number);
 #endif
 
-       if (bus->number == 0) {
-               bus->resource[0] = &pci_ioport_resource;
-               bus->resource[1] = &pci_iomem_resource;
-       }
-
        pci_read_bridge_bases(bus);
 
        if (bus->number == 0) {
@@ -357,6 +352,7 @@ void __init pcibios_fixup_bus(struct pci
 int __init pcibios_init(void)
 {
        struct pci_ops *dir = NULL;
+       LIST_HEAD(resources);
 
        if (!mb93090_mb00_detected)
                return -ENXIO;
@@ -420,7 +416,10 @@ int __init pcibios_init(void)
        }
 
        printk("PCI: Probing PCI hardware\n");
-       pci_root_bus = pci_scan_bus(0, pci_root_ops, NULL);
+       pci_add_resource(&resources, &pci_ioport_resource);
+       pci_add_resource(&resources, &pci_iomem_resource);
+       pci_root_bus = pci_scan_root_bus(NULL, 0, pci_root_ops, NULL,
+                                        &resources);
 
        pcibios_irq_init();
        pcibios_fixup_peer_bridges();
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -134,6 +134,7 @@ alloc_pci_controller (int seg)
 struct pci_root_info {
        struct acpi_device *bridge;
        struct pci_controller *controller;
+       struct list_head resources;
        char *name;
 };
 
@@ -315,24 +316,13 @@ static __devinit acpi_status add_window(
                                 &window->resource);
        }
 
-       return AE_OK;
-}
+       /* HP's firmware has a hack to work around a Windows bug.
+        * Ignore these tiny memory ranges */
+       if (!((window->resource.flags & IORESOURCE_MEM) &&
+             (window->resource.end - window->resource.start < 16)))
+               pci_add_resource(&info->resources, &window->resource);
 
-static void __devinit
-pcibios_setup_root_windows(struct pci_bus *bus, struct pci_controller *ctrl)
-{
-       int i;
-
-       pci_bus_remove_resources(bus);
-       for (i = 0; i < ctrl->windows; i++) {
-               struct resource *res = &ctrl->window[i].resource;
-               /* HP's firmware has a hack to work around a Windows bug.
-                * Ignore these tiny memory ranges */
-               if ((res->flags & IORESOURCE_MEM) &&
-                   (res->end - res->start < 16))
-                       continue;
-               pci_bus_add_resource(bus, res, 0);
-       }
+       return AE_OK;
 }
 
 struct pci_bus * __devinit
@@ -343,6 +333,7 @@ pci_acpi_scan_root(struct acpi_pci_root
        int bus = root->secondary.start;
        struct pci_controller *controller;
        unsigned int windows = 0;
+       struct pci_root_info info;
        struct pci_bus *pbus;
        char *name;
        int pxm;
@@ -359,11 +350,10 @@ pci_acpi_scan_root(struct acpi_pci_root
                controller->node = pxm_to_node(pxm);
 #endif
 
+       INIT_LIST_HEAD(&info.resources);
        acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
                        &windows);
        if (windows) {
-               struct pci_root_info info;
-
                controller->window =
                        kmalloc_node(sizeof(*controller->window) * windows,
                                     GFP_KERNEL, controller->node);
@@ -387,8 +377,14 @@ pci_acpi_scan_root(struct acpi_pci_root
         * should handle the case here, but it appears that IA64 hasn't
         * such quirk. So we just ignore the case now.
         */
-       pbus = pci_scan_bus_parented(NULL, bus, &pci_root_ops, controller);
+       pbus = pci_create_root_bus(NULL, bus, &pci_root_ops, controller,
+                                  &info.resources);
+       if (!pbus) {
+               pci_free_resource_list(&info.resources);
+               return NULL;
+       }
 
+       pbus->subordinate = pci_scan_child_bus(pbus);
        return pbus;
 
 out3:
@@ -504,14 +500,10 @@ pcibios_fixup_bus (struct pci_bus *b)
        if (b->self) {
                pci_read_bridge_bases(b);
                pcibios_fixup_bridge_resources(b->self);
-       } else {
-               pcibios_setup_root_windows(b, b->sysdata);
        }
        list_for_each_entry(dev, &b->devices, bus_list)
                pcibios_fixup_device_resources(dev);
        platform_pci_fixup_bus(b);
-
-       return;
 }
 
 void __devinit
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -140,7 +140,6 @@ extern void pci_process_bridge_OF_ranges
 /* Allocate & free a PCI host bridge structure */
 extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev);
 extern void pcibios_free_controller(struct pci_controller *phb);
-extern void pcibios_setup_phb_resources(struct pci_controller *hose);
 
 #endif /* __KERNEL__ */
 #endif /* _ASM_MICROBLAZE_PCI_BRIDGE_H */
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1019,7 +1019,6 @@ static void __devinit pcibios_fixup_brid
        struct pci_dev *dev = bus->self;
 
        pci_bus_for_each_resource(bus, res, i) {
-               res = bus->resource[i];
                if (!res)
                        continue;
                if (!res->flags)
@@ -1219,7 +1218,6 @@ void pcibios_allocate_bus_resources(stru
                 pci_domain_nr(bus), bus->number);
 
        pci_bus_for_each_resource(bus, res, i) {
-               res = bus->resource[i];
                if (!res || !res->flags
                    || res->start > res->end || res->parent)
                        continue;
@@ -1510,14 +1508,18 @@ int pcibios_enable_device(struct pci_dev
        return pci_enable_resources(dev, mask);
 }
 
-void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
+static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose, struct list_head *resources)
 {
-       struct pci_bus *bus = hose->bus;
        struct resource *res;
        int i;
 
        /* Hookup PHB IO resource */
-       bus->resource[0] = res = &hose->io_resource;
+       res = &hose->io_resource;
+
+       /* Fixup IO space offset */
+       io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
+       res->start = (res->start + io_offset) & 0xffffffffu;
+       res->end = (res->end + io_offset) & 0xffffffffu;
 
        if (!res->flags) {
                printk(KERN_WARNING "PCI: I/O resource not set for host"
@@ -1528,6 +1530,7 @@ void __devinit pcibios_setup_phb_resourc
                res->end = res->start + IO_SPACE_LIMIT;
                res->flags = IORESOURCE_IO;
        }
+       pci_add_resource(resources, res);
 
        pr_debug("PCI: PHB IO resource    = %016llx-%016llx [%lx]\n",
                 (unsigned long long)res->start,
@@ -1550,7 +1553,7 @@ void __devinit pcibios_setup_phb_resourc
                        res->flags = IORESOURCE_MEM;
 
                }
-               bus->resource[i+1] = res;
+               pci_add_resource(resources, res);
 
                pr_debug("PCI: PHB MEM resource %d = %016llx-%016llx [%lx]\n",
                        i, (unsigned long long)res->start,
@@ -1573,34 +1576,27 @@ struct device_node *pcibios_get_phb_of_n
 
 static void __devinit pcibios_scan_phb(struct pci_controller *hose)
 {
+       LIST_HEAD(resources);
        struct pci_bus *bus;
        struct device_node *node = hose->dn;
-       unsigned long io_offset;
-       struct resource *res = &hose->io_resource;
 
        pr_debug("PCI: Scanning PHB %s\n",
                 node ? node->full_name : "<NO NAME>");
 
-       /* Create an empty bus for the toplevel */
-       bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose);
+       pcibios_setup_phb_resources(hose, &resources);
+
+       bus = pci_scan_root_bus(hose->parent, hose->first_busno,
+                               hose->ops, hose, &resources);
        if (bus == NULL) {
                printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
                       hose->global_number);
+               pci_free_resource_list(&resources);
                return;
        }
        bus->secondary = hose->first_busno;
        hose->bus = bus;
 
-       /* Fixup IO space offset */
-       io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
-       res->start = (res->start + io_offset) & 0xffffffffu;
-       res->end = (res->end + io_offset) & 0xffffffffu;
-
-       /* Wire up PHB bus resources */
-       pcibios_setup_phb_resources(hose);
-
-       /* Scan children */
-       hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
+       hose->last_busno = bus->subordinate;
 }
 
 static int __init pcibios_init(void)
@@ -1614,8 +1610,6 @@ static int __init pcibios_init(void)
        list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
                hose->last_busno = 0xff;
                pcibios_scan_phb(hose);
-               printk(KERN_INFO "calling pci_bus_add_devices()\n");
-               pci_bus_add_devices(hose->bus);
                if (next_busno <= hose->last_busno)
                        next_busno = hose->last_busno + 1;
        }
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -81,6 +81,7 @@ static void __devinit pcibios_scanbus(st
 {
        static int next_busno;
        static int need_domain_info;
+       LIST_HEAD(resources);
        struct pci_bus *bus;
 
        if (!hose->iommu)
@@ -89,7 +90,13 @@ static void __devinit pcibios_scanbus(st
        if (hose->get_busno && pci_probe_only)
                next_busno = (*hose->get_busno)();
 
-       bus = pci_scan_bus(next_busno, hose->pci_ops, hose);
+       pci_add_resource(&resources, hose->mem_resource);
+       pci_add_resource(&resources, hose->io_resource);
+       bus = pci_scan_root_bus(NULL, next_busno, hose->pci_ops, hose,
+                               &resources);
+       if (!bus)
+               pci_free_resource_list(&resources);
+
        hose->bus = bus;
 
        need_domain_info = need_domain_info || hose->index;
@@ -266,15 +273,11 @@ void __devinit pcibios_fixup_bus(struct
 {
        /* Propagate hose info into the subordinate devices.  */
 
-       struct pci_controller *hose = bus->sysdata;
        struct list_head *ln;
        struct pci_dev *dev = bus->self;
 
-       if (!dev) {
-               bus->resource[0] = hose->io_resource;
-               bus->resource[1] = hose->mem_resource;
-       } else if (pci_probe_only &&
-                  (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
+       if (pci_probe_only && dev &&
+           (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
                pci_read_bridge_bases(bus);
                pcibios_fixup_device_resources(dev, bus);
        }
--- a/arch/mn10300/unit-asb2305/pci.c
+++ b/arch/mn10300/unit-asb2305/pci.c
@@ -380,11 +380,6 @@ void __devinit pcibios_fixup_bus(struct
 {
        struct pci_dev *dev;
 
-       if (bus->number == 0) {
-               bus->resource[0] = &pci_ioport_resource;
-               bus->resource[1] = &pci_iomem_resource;
-       }
-
        if (bus->self) {
                pci_read_bridge_bases(bus);
                pcibios_fixup_device_resources(bus->self);
@@ -402,6 +397,8 @@ void __devinit pcibios_fixup_bus(struct
  */
 static int __init pcibios_init(void)
 {
+       LIST_HEAD(resources);
+
        ioport_resource.start   = 0xA0000000;
        ioport_resource.end     = 0xDFFFFFFF;
        iomem_resource.start    = 0xA0000000;
@@ -423,7 +420,10 @@ static int __init pcibios_init(void)
        printk(KERN_INFO "PCI: Probing PCI hardware [mempage %08x]\n",
               MEM_PAGING_REG);
 
-       pci_root_bus = pci_scan_bus(0, &pci_direct_ampci, NULL);
+       pci_add_resource(&resources, &pci_ioport_resource);
+       pci_add_resource(&resources, &pci_iomem_resource);
+       pci_root_bus = pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL,
+                                        &resources);
 
        pcibios_irq_init();
        pcibios_fixup_irqs();
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -222,7 +222,6 @@ extern void pci_process_bridge_OF_ranges
 /* Allocate & free a PCI host bridge structure */
 extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev);
 extern void pcibios_free_controller(struct pci_controller *phb);
-extern void pcibios_setup_phb_resources(struct pci_controller *hose);
 
 #ifdef CONFIG_PCI
 extern int pcibios_vaddr_is_ioport(void __iomem *address);
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1555,14 +1555,13 @@ int pcibios_enable_device(struct pci_dev
        return pci_enable_resources(dev, mask);
 }
 
-void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
+static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose, struct list_head *resources)
 {
-       struct pci_bus *bus = hose->bus;
        struct resource *res;
        int i;
 
        /* Hookup PHB IO resource */
-       bus->resource[0] = res = &hose->io_resource;
+       res = &hose->io_resource;
 
        if (!res->flags) {
                printk(KERN_WARNING "PCI: I/O resource not set for host"
@@ -1580,6 +1579,7 @@ void __devinit pcibios_setup_phb_resourc
                 (unsigned long long)res->start,
                 (unsigned long long)res->end,
                 (unsigned long)res->flags);
+       pci_add_resource(resources, res);
 
        /* Hookup PHB Memory resources */
        for (i = 0; i < 3; ++i) {
@@ -1597,12 +1597,12 @@ void __devinit pcibios_setup_phb_resourc
                        res->flags = IORESOURCE_MEM;
 #endif /* CONFIG_PPC32 */
                }
-               bus->resource[i+1] = res;
 
                pr_debug("PCI: PHB MEM resource %d = %016llx-%016llx [%lx]\n", i,
                         (unsigned long long)res->start,
                         (unsigned long long)res->end,
                         (unsigned long)res->flags);
+               pci_add_resource(resources, res);
        }
 
        pr_debug("PCI: PHB MEM offset     = %016llx\n",
@@ -1696,6 +1696,7 @@ struct device_node *pcibios_get_phb_of_n
  */
 void __devinit pcibios_scan_phb(struct pci_controller *hose)
 {
+       LIST_HEAD(resources);
        struct pci_bus *bus;
        struct device_node *node = hose->dn;
        int mode;
@@ -1703,22 +1704,24 @@ void __devinit pcibios_scan_phb(struct p
        pr_debug("PCI: Scanning PHB %s\n",
                 node ? node->full_name : "<NO NAME>");
 
+       /* Get some IO space for the new PHB */
+       pcibios_setup_phb_io_space(hose);
+
+       /* Wire up PHB bus resources */
+       pcibios_setup_phb_resources(hose, &resources);
+
        /* Create an empty bus for the toplevel */
-       bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose);
+       bus = pci_create_root_bus(hose->parent, hose->first_busno,
+                                 hose->ops, hose, &resources);
        if (bus == NULL) {
                pr_err("Failed to create bus for PCI domain %04x\n",
                        hose->global_number);
+               pci_free_resource_list(&resources);
                return;
        }
        bus->secondary = hose->first_busno;
        hose->bus = bus;
 
-       /* Get some IO space for the new PHB */
-       pcibios_setup_phb_io_space(hose);
-
-       /* Wire up PHB bus resources */
-       pcibios_setup_phb_resources(hose);
-
        /* Get probe mode and perform scan */
        mode = PCI_PROBE_NORMAL;
        if (node && ppc_md.pci_probe_mode)
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -131,30 +131,13 @@ EXPORT_SYMBOL_GPL(pcibios_unmap_io_space
 
 #endif /* CONFIG_HOTPLUG */
 
-int __devinit pcibios_map_io_space(struct pci_bus *bus)
+static int __devinit pcibios_map_phb_io_space(struct pci_controller *hose)
 {
        struct vm_struct *area;
        unsigned long phys_page;
        unsigned long size_page;
        unsigned long io_virt_offset;
-       struct pci_controller *hose;
-
-       WARN_ON(bus == NULL);
 
-       /* If this not a PHB, nothing to do, page tables still exist and
-        * thus HPTEs will be faulted in when needed
-        */
-       if (bus->self) {
-               pr_debug("IO mapping for PCI-PCI bridge %s\n",
-                        pci_name(bus->self));
-               pr_debug("  virt=0x%016llx...0x%016llx\n",
-                        bus->resource[0]->start + _IO_BASE,
-                        bus->resource[0]->end + _IO_BASE);
-               return 0;
-       }
-
-       /* Get the host bridge */
-       hose = pci_bus_to_host(bus);
        phys_page = _ALIGN_DOWN(hose->io_base_phys, PAGE_SIZE);
        size_page = _ALIGN_UP(hose->pci_io_size, PAGE_SIZE);
 
@@ -198,11 +181,30 @@ int __devinit pcibios_map_io_space(struc
 
        return 0;
 }
+
+int __devinit pcibios_map_io_space(struct pci_bus *bus)
+{
+       WARN_ON(bus == NULL);
+
+       /* If this not a PHB, nothing to do, page tables still exist and
+        * thus HPTEs will be faulted in when needed
+        */
+       if (bus->self) {
+               pr_debug("IO mapping for PCI-PCI bridge %s\n",
+                        pci_name(bus->self));
+               pr_debug("  virt=0x%016llx...0x%016llx\n",
+                        bus->resource[0]->start + _IO_BASE,
+                        bus->resource[0]->end + _IO_BASE);
+               return 0;
+       }
+
+       return pcibios_map_phb_io_space(pci_bus_to_host(bus));
+}
 EXPORT_SYMBOL_GPL(pcibios_map_io_space);
 
 void __devinit pcibios_setup_phb_io_space(struct pci_controller *hose)
 {
-       pcibios_map_io_space(hose->bus);
+       pcibios_map_phb_io_space(hose);
 }
 
 #define IOBASE_BRIDGE_NUMBER   0
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -36,9 +36,15 @@ static void __devinit pcibios_scanbus(st
 {
        static int next_busno;
        static int need_domain_info;
+       LIST_HEAD(resources);
+       int i;
        struct pci_bus *bus;
 
-       bus = pci_scan_bus(next_busno, hose->pci_ops, hose);
+       for (i = 0; i < hose->nr_resources; i++)
+               pci_add_resource(&resources, hose->resources + i);
+
+       bus = pci_scan_root_bus(NULL, next_busno, hose->pci_ops, hose,
+                               &resources);
        hose->bus = bus;
 
        need_domain_info = need_domain_info || hose->index;
@@ -55,6 +61,8 @@ static void __devinit pcibios_scanbus(st
                pci_bus_size_bridges(bus);
                pci_bus_assign_resources(bus);
                pci_enable_bridges(bus);
+       } else {
+               pci_free_resource_list(&resources);
        }
 }
 
@@ -162,16 +170,8 @@ static void pcibios_fixup_device_resourc
  */
 void __devinit pcibios_fixup_bus(struct pci_bus *bus)
 {
-       struct pci_dev *dev = bus->self;
+       struct pci_dev *dev;
        struct list_head *ln;
-       struct pci_channel *hose = bus->sysdata;
-
-       if (!dev) {
-               int i;
-
-               for (i = 0; i < hose->nr_resources; i++)
-                       bus->resource[i] = hose->resources + i;
-       }
 
        for (ln = bus->devices.next; ln != &bus->devices; ln = ln->next) {
                dev = pci_dev_b(ln);
--- a/arch/sparc/kernel/leon_pci.c
+++ b/arch/sparc/kernel/leon_pci.c
@@ -19,22 +19,22 @@
  */
 void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info)
 {
+       LIST_HEAD(resources);
        struct pci_bus *root_bus;
 
-       root_bus = pci_scan_bus_parented(&ofdev->dev, 0, info->ops, info);
-       if (root_bus) {
-               root_bus->resource[0] = &info->io_space;
-               root_bus->resource[1] = &info->mem_space;
-               root_bus->resource[2] = NULL;
-
-               /* Init all PCI devices into PCI tree */
-               pci_bus_add_devices(root_bus);
+       pci_add_resource(&resources, &info->io_space);
+       pci_add_resource(&resources, &info->mem_space);
 
+       root_bus = pci_scan_root_bus(&ofdev->dev, 0, info->ops, info,
+                                    &resources);
+       if (root_bus) {
                /* Setup IRQs of all devices using custom routines */
                pci_fixup_irqs(pci_common_swizzle, info->map_irq);
 
                /* Assign devices with resources */
                pci_assign_unassigned_resources();
+       } else {
+               pci_free_resource_list(&resources);
        }
 }
 
@@ -83,15 +83,6 @@ void __devinit pcibios_fixup_bus(struct
        int i, has_io, has_mem;
        u16 cmd;
 
-       /* Generic PCI bus probing sets these to point at
-        * &io{port,mem}_resouce which is wrong for us.
-        */
-       if (pbus->self == NULL) {
-               pbus->resource[0] = &info->io_space;
-               pbus->resource[1] = &info->mem_space;
-               pbus->resource[2] = NULL;
-       }
-
        list_for_each_entry(dev, &pbus->devices, bus_list) {
                /*
                 * We can not rely on that the bootloader has enabled I/O
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -685,23 +685,25 @@ static void __devinit pci_bus_register_o
 struct pci_bus * __devinit pci_scan_one_pbm(struct pci_pbm_info *pbm,
                                            struct device *parent)
 {
+       LIST_HEAD(resources);
        struct device_node *node = pbm->op->dev.of_node;
        struct pci_bus *bus;
 
        printk("PCI: Scanning PBM %s\n", node->full_name);
 
-       bus = pci_create_bus(parent, pbm->pci_first_busno, pbm->pci_ops, pbm);
+       pci_add_resource(&resources, &pbm->io_space);
+       pci_add_resource(&resources, &pbm->mem_space);
+       bus = pci_create_root_bus(parent, pbm->pci_first_busno, pbm->pci_ops,
+                                 pbm, &resources);
        if (!bus) {
                printk(KERN_ERR "Failed to create bus for %s\n",
                       node->full_name);
+               pci_free_resource_list(&resources);
                return NULL;
        }
        bus->secondary = pbm->pci_first_busno;
        bus->subordinate = pbm->pci_last_busno;
 
-       bus->resource[0] = &pbm->io_space;
-       bus->resource[1] = &pbm->mem_space;
-
        pci_of_scan_bus(pbm, node, bus);
        pci_bus_add_devices(bus);
        pci_bus_register_of_sysfs(bus);
@@ -711,13 +713,6 @@ struct pci_bus * __devinit pci_scan_one_
 
 void __devinit pcibios_fixup_bus(struct pci_bus *pbus)
 {
-       struct pci_pbm_info *pbm = pbus->sysdata;
-
-       /* Generic PCI bus probing sets these to point at
-        * &io{port,mem}_resouce which is wrong for us.
-        */
-       pbus->resource[0] = &pbm->io_space;
-       pbus->resource[1] = &pbm->mem_space;
 }
 
 void pcibios_update_irq(struct pci_dev *pdev, int irq)
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -174,7 +174,7 @@ static inline void arch_fix_phys_package
 }
 
 struct pci_bus;
-void x86_pci_root_bus_res_quirks(struct pci_bus *b);
+void x86_pci_root_bus_resources(int bus, struct list_head *resources);
 
 #ifdef CONFIG_SMP
 #define mc_capable()   ((boot_cpu_data.x86_max_cores > 1) && \
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -12,7 +12,7 @@ struct pci_root_info {
        char *name;
        unsigned int res_num;
        struct resource *res;
-       struct pci_bus *bus;
+       struct list_head *resources;
        int busnum;
 };
 
@@ -261,23 +261,20 @@ static void add_resources(struct pci_roo
                                 "ignoring host bridge window %pR (conflicts with %s %pR)\n",
                                 res, conflict->name, conflict);
                else
-                       pci_bus_add_resource(info->bus, res, 0);
+                       pci_add_resource(info->resources, res);
        }
 }
 
 static void
 get_current_resources(struct acpi_device *device, int busnum,
-                       int domain, struct pci_bus *bus)
+                     int domain, struct list_head *resources)
 {
        struct pci_root_info info;
        size_t size;
 
-       if (pci_use_crs)
-               pci_bus_remove_resources(bus);
-
        info.bridge = device;
-       info.bus = bus;
        info.res_num = 0;
+       info.resources = resources;
        acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_resource,
                                &info);
        if (!info.res_num)
@@ -286,7 +283,7 @@ get_current_resources(struct acpi_device
        size = sizeof(*info.res) * info.res_num;
        info.res = kmalloc(size, GFP_KERNEL);
        if (!info.res)
-               goto res_alloc_fail;
+               return;
 
        info.name = kasprintf(GFP_KERNEL, "PCI Bus %04x:%02x", domain, busnum);
        if (!info.name)
@@ -301,8 +298,6 @@ get_current_resources(struct acpi_device
 
 name_alloc_fail:
        kfree(info.res);
-res_alloc_fail:
-       return;
 }
 
 struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
@@ -310,6 +305,7 @@ struct pci_bus * __devinit pci_acpi_scan
        struct acpi_device *device = root->device;
        int domain = root->segment;
        int busnum = root->secondary.start;
+       LIST_HEAD(resources);
        struct pci_bus *bus;
        struct pci_sysdata *sd;
        int node;
@@ -364,11 +360,15 @@ struct pci_bus * __devinit pci_acpi_scan
                memcpy(bus->sysdata, sd, sizeof(*sd));
                kfree(sd);
        } else {
-               bus = pci_create_bus(NULL, busnum, &pci_root_ops, sd);
-               if (bus) {
-                       get_current_resources(device, busnum, domain, bus);
+               get_current_resources(device, busnum, domain, &resources);
+               if (list_empty(&resources))
+                       x86_pci_root_bus_resources(busnum, &resources);
+               bus = pci_create_root_bus(NULL, busnum, &pci_root_ops, sd,
+                                         &resources);
+               if (bus)
                        bus->subordinate = pci_scan_child_bus(bus);
-               }
+               else
+                       pci_free_resource_list(&resources);
        }
 
        /* After the PCI-E bus has been walked and all devices discovered,
--- a/arch/x86/pci/broadcom_bus.c
+++ b/arch/x86/pci/broadcom_bus.c
@@ -15,10 +15,11 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <asm/pci_x86.h>
+#include <asm/pci-direct.h>
 
 #include "bus_numa.h"
 
-static void __devinit cnb20le_res(struct pci_dev *dev)
+static void __init cnb20le_res(u8 bus, u8 slot, u8 func)
 {
        struct pci_root_info *info;
        struct resource res;
@@ -26,21 +27,12 @@ static void __devinit cnb20le_res(struct
        u8 fbus, lbus;
        int i;
 
-#ifdef CONFIG_ACPI
-       /*
-        * We should get host bridge information from ACPI unless the BIOS
-        * doesn't support it.
-        */
-       if (acpi_os_get_root_pointer())
-               return;
-#endif
-
        info = &pci_root_info[pci_root_num];
        pci_root_num++;
 
        /* read the PCI bus numbers */
-       pci_read_config_byte(dev, 0x44, &fbus);
-       pci_read_config_byte(dev, 0x45, &lbus);
+       fbus = read_pci_config_byte(bus, slot, func, 0x44);
+       lbus = read_pci_config_byte(bus, slot, func, 0x45);
        info->bus_min = fbus;
        info->bus_max = lbus;
 
@@ -59,8 +51,8 @@ static void __devinit cnb20le_res(struct
        }
 
        /* read the non-prefetchable memory window */
-       pci_read_config_word(dev, 0xc0, &word1);
-       pci_read_config_word(dev, 0xc2, &word2);
+       word1 = read_pci_config_16(bus, slot, func, 0xc0);
+       word2 = read_pci_config_16(bus, slot, func, 0xc2);
        if (word1 != word2) {
                res.start = (word1 << 16) | 0x0000;
                res.end   = (word2 << 16) | 0xffff;
@@ -69,8 +61,8 @@ static void __devinit cnb20le_res(struct
        }
 
        /* read the prefetchable memory window */
-       pci_read_config_word(dev, 0xc4, &word1);
-       pci_read_config_word(dev, 0xc6, &word2);
+       word1 = read_pci_config_16(bus, slot, func, 0xc4);
+       word2 = read_pci_config_16(bus, slot, func, 0xc6);
        if (word1 != word2) {
                res.start = (word1 << 16) | 0x0000;
                res.end   = (word2 << 16) | 0xffff;
@@ -79,8 +71,8 @@ static void __devinit cnb20le_res(struct
        }
 
        /* read the IO port window */
-       pci_read_config_word(dev, 0xd0, &word1);
-       pci_read_config_word(dev, 0xd2, &word2);
+       word1 = read_pci_config_16(bus, slot, func, 0xd0);
+       word2 = read_pci_config_16(bus, slot, func, 0xd2);
        if (word1 != word2) {
                res.start = word1;
                res.end   = word2;
@@ -92,13 +84,37 @@ static void __devinit cnb20le_res(struct
        res.start = fbus;
        res.end   = lbus;
        res.flags = IORESOURCE_BUS;
-       dev_info(&dev->dev, "CNB20LE PCI Host Bridge (domain %04x %pR)\n",
-                           pci_domain_nr(dev->bus), &res);
+       printk(KERN_INFO "CNB20LE PCI Host Bridge (domain 0000 %pR)\n", &res);
 
        for (i = 0; i < info->res_num; i++)
-               dev_info(&dev->dev, "host bridge window %pR\n", &info->res[i]);
+               printk(KERN_INFO "host bridge window %pR\n", &info->res[i]);
 }
 
-DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_LE,
-                       cnb20le_res);
+static int __init broadcom_postcore_init(void)
+{
+       u8 bus = 0, slot = 0;
+       u32 id;
+       u16 vendor, device;
+
+#ifdef CONFIG_ACPI
+       /*
+        * We should get host bridge information from ACPI unless the BIOS
+        * doesn't support it.
+        */
+       if (acpi_os_get_root_pointer())
+               return 0;
+#endif
+
+       id = read_pci_config(bus, slot, 0, PCI_VENDOR_ID);
+       vendor = id & 0xffff;
+       device = (id >> 16) & 0xffff;
+
+       if (vendor == PCI_VENDOR_ID_SERVERWORKS &&
+           device == PCI_DEVICE_ID_SERVERWORKS_LE) {
+               cnb20le_res(bus, slot, 0);
+               cnb20le_res(bus, slot, 1);
+       }
+       return 0;
+}
 
+postcore_initcall(broadcom_postcore_init);
--- a/arch/x86/pci/bus_numa.c
+++ b/arch/x86/pci/bus_numa.c
@@ -7,45 +7,50 @@
 int pci_root_num;
 struct pci_root_info pci_root_info[PCI_ROOT_NR];
 
-void x86_pci_root_bus_res_quirks(struct pci_bus *b)
+void x86_pci_root_bus_resources(int bus, struct list_head *resources)
 {
        int i;
        int j;
        struct pci_root_info *info;
 
-       /* don't go for it if _CRS is used already */
-       if (b->resource[0] != &ioport_resource ||
-           b->resource[1] != &iomem_resource)
-               return;
-
        if (!pci_root_num)
-               return;
+               goto default_resources;
 
        for (i = 0; i < pci_root_num; i++) {
-               if (pci_root_info[i].bus_min == b->number)
+               if (pci_root_info[i].bus_min == bus)
                        break;
        }
 
        if (i == pci_root_num)
-               return;
+               goto default_resources;
 
-       printk(KERN_DEBUG "PCI: peer root bus %02x res updated from pci conf\n",
-                       b->number);
+       printk(KERN_DEBUG "PCI: root bus %02x: hardware-probed resources\n",
+              bus);
 
-       pci_bus_remove_resources(b);
        info = &pci_root_info[i];
        for (j = 0; j < info->res_num; j++) {
                struct resource *res;
                struct resource *root;
 
                res = &info->res[j];
-               pci_bus_add_resource(b, res, 0);
+               pci_add_resource(resources, res);
                if (res->flags & IORESOURCE_IO)
                        root = &ioport_resource;
                else
                        root = &iomem_resource;
                insert_resource(root, res);
        }
+       return;
+
+default_resources:
+       /*
+        * We don't have any host bridge aperture information from the
+        * "native host bridge drivers," e.g., amd_bus or broadcom_bus,
+        * so fall back to the defaults historically used by pci_create_bus().
+        */
+       printk(KERN_DEBUG "PCI: root bus %02x: using default resources\n", bus);
+       pci_add_resource(resources, &ioport_resource);
+       pci_add_resource(resources, &iomem_resource);
 }
 
 void __devinit update_res(struct pci_root_info *info, resource_size_t start,
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -164,9 +164,6 @@ void __devinit pcibios_fixup_bus(struct
 {
        struct pci_dev *dev;
 
-       /* root bus? */
-       if (!b->parent)
-               x86_pci_root_bus_res_quirks(b);
        pci_read_bridge_bases(b);
        list_for_each_entry(dev, &b->devices, bus_list)
                pcibios_fixup_device_resources(dev);
@@ -433,6 +430,7 @@ void __init dmi_check_pciprobe(void)
 
 struct pci_bus * __devinit pcibios_scan_root(int busnum)
 {
+       LIST_HEAD(resources);
        struct pci_bus *bus = NULL;
        struct pci_sysdata *sd;
 
@@ -456,9 +454,12 @@ struct pci_bus * __devinit pcibios_scan_
        sd->node = get_mp_bus_to_node(busnum);
 
        printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
-       bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
-       if (!bus)
+       x86_pci_root_bus_resources(busnum, &resources);
+       bus = pci_scan_root_bus(NULL, busnum, &pci_root_ops, sd, &resources);
+       if (!bus) {
+               pci_free_resource_list(&resources);
                kfree(sd);
+       }
 
        return bus;
 }
@@ -639,6 +640,7 @@ int pci_ext_cfg_avail(struct pci_dev *de
 
 struct pci_bus * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops, int node)
 {
+       LIST_HEAD(resources);
        struct pci_bus *bus = NULL;
        struct pci_sysdata *sd;
 
@@ -653,9 +655,12 @@ struct pci_bus * __devinit pci_scan_bus_
                return NULL;
        }
        sd->node = node;
-       bus = pci_scan_bus(busno, ops, sd);
-       if (!bus)
+       x86_pci_root_bus_resources(busno, &resources);
+       bus = pci_scan_root_bus(NULL, busno, ops, sd, &resources);
+       if (!bus) {
+               pci_free_resource_list(&resources);
                kfree(sd);
+       }
 
        return bus;
 }
--- a/arch/x86/pci/legacy.c
+++ b/arch/x86/pci/legacy.c
@@ -31,9 +31,6 @@ int __init pci_legacy_init(void)
 
        printk("PCI: Probing PCI hardware\n");
        pci_root_bus = pcibios_scan_root(0);
-       if (pci_root_bus)
-               pci_bus_add_devices(pci_root_bus);
-
        return 0;
 }
 
--- a/arch/x86/pci/numaq_32.c
+++ b/arch/x86/pci/numaq_32.c
@@ -153,8 +153,6 @@ int __init pci_numaq_init(void)
        raw_pci_ops = &pci_direct_conf1_mq;
 
        pci_root_bus = pcibios_scan_root(0);
-       if (pci_root_bus)
-               pci_bus_add_devices(pci_root_bus);
        if (num_online_nodes() > 1)
                for_each_online_node(quad) {
                        if (quad == 0)
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -134,9 +134,46 @@ struct pci_controller * __init pcibios_a
        return pci_ctrl;
 }
 
+static void __init pci_controller_apertures(struct pci_controller *pci_ctrl,
+                                           struct list_head *resources)
+{
+       struct resource *res;
+       unsigned long io_offset;
+       int i;
+
+       io_offset = (unsigned long)pci_ctrl->io_space.base;
+       res = &pci_ctrl->io_resource;
+       if (!res->flags) {
+               if (io_offset)
+                       printk (KERN_ERR "I/O resource not set for host"
+                               " bridge %d\n", pci_ctrl->index);
+               res->start = 0;
+               res->end = IO_SPACE_LIMIT;
+               res->flags = IORESOURCE_IO;
+       }
+       res->start += io_offset;
+       res->end += io_offset;
+       pci_add_resource(resources, res);
+
+       for (i = 0; i < 3; i++) {
+               res = &pci_ctrl->mem_resources[i];
+               if (!res->flags) {
+                       if (i > 0)
+                               continue;
+                       printk(KERN_ERR "Memory resource not set for "
+                              "host bridge %d\n", pci_ctrl->index);
+                       res->start = 0;
+                       res->end = ~0U;
+                       res->flags = IORESOURCE_MEM;
+               }
+               pci_add_resource(resources, res);
+       }
+}
+
 static int __init pcibios_init(void)
 {
        struct pci_controller *pci_ctrl;
+       struct list_head resources;
        struct pci_bus *bus;
        int next_busno = 0, i;
 
@@ -145,19 +182,10 @@ static int __init pcibios_init(void)
        /* Scan all of the recorded PCI controllers.  */
        for (pci_ctrl = pci_ctrl_head; pci_ctrl; pci_ctrl = pci_ctrl->next) {
                pci_ctrl->last_busno = 0xff;
-               bus = pci_scan_bus(pci_ctrl->first_busno, pci_ctrl->ops,
-                                  pci_ctrl);
-               if (pci_ctrl->io_resource.flags) {
-                       unsigned long offs;
-
-                       offs = (unsigned long)pci_ctrl->io_space.base;
-                       pci_ctrl->io_resource.start += offs;
-                       pci_ctrl->io_resource.end += offs;
-                       bus->resource[0] = &pci_ctrl->io_resource;
-               }
-               for (i = 0; i < 3; ++i)
-                       if (pci_ctrl->mem_resources[i].flags)
-                               bus->resource[i+1] =&pci_ctrl->mem_resources[i];
+               INIT_LIST_HEAD(&resources);
+               pci_controller_apertures(pci_ctrl, &resources);
+               bus = pci_scan_root_bus(NULL, pci_ctrl->first_busno,
+                                       pci_ctrl->ops, pci_ctrl, &resources);
                pci_ctrl->bus = bus;
                pci_ctrl->last_busno = bus->subordinate;
                if (next_busno <= pci_ctrl->last_busno)
@@ -178,36 +206,7 @@ void __init pcibios_fixup_bus(struct pci
        int i;
 
        io_offset = (unsigned long)pci_ctrl->io_space.base;
-       if (bus->parent == NULL) {
-               /* this is a host bridge - fill in its resources */
-               pci_ctrl->bus = bus;
-
-               bus->resource[0] = res = &pci_ctrl->io_resource;
-               if (!res->flags) {
-                       if (io_offset)
-                               printk (KERN_ERR "I/O resource not set for host"
-                                       " bridge %d\n", pci_ctrl->index);
-                       res->start = 0;
-                       res->end = IO_SPACE_LIMIT;
-                       res->flags = IORESOURCE_IO;
-               }
-               res->start += io_offset;
-               res->end += io_offset;
-
-               for (i = 0; i < 3; i++) {
-                       res = &pci_ctrl->mem_resources[i];
-                       if (!res->flags) {
-                               if (i > 0)
-                                       continue;
-                               printk(KERN_ERR "Memory resource not set for "
-                                      "host bridge %d\n", pci_ctrl->index);
-                               res->start = 0;
-                               res->end = ~0U;
-                               res->flags = IORESOURCE_MEM;
-                       }
-                       bus->resource[i+1] = res;
-               }
-       } else {
+       if (bus->parent) {
                /* This is a subordinate bridge */
                pci_read_bridge_bases(bus);
 
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -562,19 +562,6 @@ dino_fixup_bus(struct pci_bus *bus)
        /* Firmware doesn't set up card-mode dino, so we have to */
        if (is_card_dino(&dino_dev->hba.dev->id)) {
                dino_card_setup(bus, dino_dev->hba.base_addr);
-       } else if(bus->parent == NULL) {
-               /* must have a dino above it, reparent the resources
-                * into the dino window */
-               int i;
-               struct resource *res = &dino_dev->hba.lmmio_space;
-
-               bus->resource[0] = &(dino_dev->hba.io_space);
-               for(i = 0; i < DINO_MAX_LMMIO_RESOURCES; i++) {
-                       if(res[i].flags == 0)
-                               break;
-                       bus->resource[i+1] = &res[i];
-               }
-
        } else if (bus->parent) {
                int i;
 
@@ -927,6 +914,7 @@ static int __init dino_probe(struct pari
        const char *version = "unknown";
        char *name;
        int is_cujo = 0;
+       LIST_HEAD(resources);
        struct pci_bus *bus;
        unsigned long hpa = dev->hpa.start;
 
@@ -1003,26 +991,37 @@ static int __init dino_probe(struct pari
 
        dev->dev.platform_data = dino_dev;
 
+       pci_add_resource(&resources, &dino_dev->hba.io_space);
+       if (dino_dev->hba.lmmio_space.flags)
+               pci_add_resource(&resources, &dino_dev->hba.lmmio_space);
+       if (dino_dev->hba.elmmio_space.flags)
+               pci_add_resource(&resources, &dino_dev->hba.elmmio_space);
+       if (dino_dev->hba.gmmio_space.flags)
+               pci_add_resource(&resources, &dino_dev->hba.gmmio_space);
+
        /*
        ** It's not used to avoid chicken/egg problems
        ** with configuration accessor functions.
        */
-       dino_dev->hba.hba_bus = bus = pci_scan_bus_parented(&dev->dev,
-                        dino_current_bus, &dino_cfg_ops, NULL);
-
-       if(bus) {
-               /* This code *depends* on scanning being single threaded
-                * if it isn't, this global bus number count will fail
-                */
-               dino_current_bus = bus->subordinate + 1;
-               pci_bus_assign_resources(bus);
-               pci_bus_add_devices(bus);
-       } else {
+       dino_dev->hba.hba_bus = bus = pci_create_root_bus(&dev->dev,
+                        dino_current_bus, &dino_cfg_ops, NULL, &resources);
+       if (!bus) {
                printk(KERN_ERR "ERROR: failed to scan PCI bus on %s (duplicate bus number %d?)\n",
                       dev_name(&dev->dev), dino_current_bus);
+               pci_free_resource_list(&resources);
                /* increment the bus number in case of duplicates */
                dino_current_bus++;
+               return 0;
        }
+
+       bus->subordinate = pci_scan_child_bus(bus);
+
+       /* This code *depends* on scanning being single threaded
+        * if it isn't, this global bus number count will fail
+        */
+       dino_current_bus = bus->subordinate + 1;
+       pci_bus_assign_resources(bus);
+       pci_bus_add_devices(bus);
        return 0;
 }
 
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -653,7 +653,7 @@ lba_fixup_bus(struct pci_bus *bus)
                }
        } else {
                /* Host-PCI Bridge */
-               int err, i;
+               int err;
 
                DBG("lba_fixup_bus() %s [%lx/%lx]/%lx\n",
                        ldev->hba.io_space.name,
@@ -669,9 +669,6 @@ lba_fixup_bus(struct pci_bus *bus)
                        lba_dump_res(&ioport_resource, 2);
                        BUG();
                }
-               /* advertize Host bridge resources to PCI bus */
-               bus->resource[0] = &(ldev->hba.io_space);
-               i = 1;
 
                if (ldev->hba.elmmio_space.start) {
                        err = request_resource(&iomem_resource,
@@ -685,35 +682,17 @@ lba_fixup_bus(struct pci_bus *bus)
 
                                /* lba_dump_res(&iomem_resource, 2); */
                                /* BUG(); */
-                       } else
-                               bus->resource[i++] = &(ldev->hba.elmmio_space);
+                       }
                }
 
-
-               /*   Overlaps with elmmio can (and should) fail here.
-                *   We will prune (or ignore) the distributed range.
-                *
-                *   FIXME: SBA code should register all elmmio ranges first.
-                *      that would take care of elmmio ranges routed
-                *      to a different rope (already discovered) from
-                *      getting registered *after* LBA code has already
-                *      registered it's distributed lmmio range.
-                */
-               if (truncate_pat_collision(&iomem_resource,
-                                       &(ldev->hba.lmmio_space))) {
-
-                       printk(KERN_WARNING "LBA: lmmio_space [%lx/%lx] duplicate!\n",
-                                       (long)ldev->hba.lmmio_space.start,
-                                       (long)ldev->hba.lmmio_space.end);
-               } else {
+               if (ldev->hba.lmmio_space.flags) {
                        err = request_resource(&iomem_resource, &(ldev->hba.lmmio_space));
                        if (err < 0) {
                                printk(KERN_ERR "FAILED: lba_fixup_bus() request for "
                                        "lmmio_space [%lx/%lx]\n",
                                        (long)ldev->hba.lmmio_space.start,
                                        (long)ldev->hba.lmmio_space.end);
-                       } else
-                               bus->resource[i++] = &(ldev->hba.lmmio_space);
+                       }
                }
 
 #ifdef CONFIG_64BIT
@@ -728,7 +707,6 @@ lba_fixup_bus(struct pci_bus *bus)
                                lba_dump_res(&iomem_resource, 2);
                                BUG();
                        }
-                       bus->resource[i++] = &(ldev->hba.gmmio_space);
                }
 #endif
 
@@ -1404,6 +1382,7 @@ static int __init
 lba_driver_probe(struct parisc_device *dev)
 {
        struct lba_device *lba_dev;
+       LIST_HEAD(resources);
        struct pci_bus *lba_bus;
        struct pci_ops *cfg_ops;
        u32 func_class;
@@ -1518,10 +1497,41 @@ lba_driver_probe(struct parisc_device *d
        if (lba_dev->hba.bus_num.start < lba_next_bus)
                lba_dev->hba.bus_num.start = lba_next_bus;
 
+       /*   Overlaps with elmmio can (and should) fail here.
+        *   We will prune (or ignore) the distributed range.
+        *
+        *   FIXME: SBA code should register all elmmio ranges first.
+        *      that would take care of elmmio ranges routed
+        *      to a different rope (already discovered) from
+        *      getting registered *after* LBA code has already
+        *      registered it's distributed lmmio range.
+        */
+       if (truncate_pat_collision(&iomem_resource,
+                                  &(lba_dev->hba.lmmio_space))) {
+               printk(KERN_WARNING "LBA: lmmio_space [%lx/%lx] duplicate!\n",
+                               (long)lba_dev->hba.lmmio_space.start,
+                               (long)lba_dev->hba.lmmio_space.end);
+               lba_dev->hba.lmmio_space.flags = 0;
+       }
+
+       pci_add_resource(&resources, &lba_dev->hba.io_space);
+       if (lba_dev->hba.elmmio_space.start)
+               pci_add_resource(&resources, &lba_dev->hba.elmmio_space);
+       if (lba_dev->hba.lmmio_space.flags)
+               pci_add_resource(&resources, &lba_dev->hba.lmmio_space);
+       if (lba_dev->hba.gmmio_space.flags)
+               pci_add_resource(&resources, &lba_dev->hba.gmmio_space);
+
        dev->dev.platform_data = lba_dev;
        lba_bus = lba_dev->hba.hba_bus =
-               pci_scan_bus_parented(&dev->dev, lba_dev->hba.bus_num.start,
-                               cfg_ops, NULL);
+               pci_create_root_bus(&dev->dev, lba_dev->hba.bus_num.start,
+                                   cfg_ops, NULL, &resources);
+       if (!lba_bus) {
+               pci_free_resource_list(&resources);
+               return 0;
+       }
+
+       lba_bus->subordinate = pci_scan_child_bus(lba_bus);
 
        /* This is in lieu of calling pci_assign_unassigned_resources() */
        if (is_pdc_pat()) {
@@ -1551,10 +1561,8 @@ lba_driver_probe(struct parisc_device *d
                lba_dev->flags |= LBA_FLAG_SKIP_PROBE;
        }
 
-       if (lba_bus) {
-               lba_next_bus = lba_bus->subordinate + 1;
-               pci_bus_add_devices(lba_bus);
-       }
+       lba_next_bus = lba_bus->subordinate + 1;
+       pci_bus_add_devices(lba_bus);
 
        /* Whew! Finally done! Tell services we got this one covered. */
        return 0;
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -18,6 +18,32 @@
 
 #include "pci.h"
 
+void pci_add_resource(struct list_head *resources, struct resource *res)
+{
+       struct pci_bus_resource *bus_res;
+
+       bus_res = kzalloc(sizeof(struct pci_bus_resource), GFP_KERNEL);
+       if (!bus_res) {
+               printk(KERN_ERR "PCI: can't add bus resource %pR\n", res);
+               return;
+       }
+
+       bus_res->res = res;
+       list_add_tail(&bus_res->list, resources);
+}
+EXPORT_SYMBOL(pci_add_resource);
+
+void pci_free_resource_list(struct list_head *resources)
+{
+       struct pci_bus_resource *bus_res, *tmp;
+
+       list_for_each_entry_safe(bus_res, tmp, resources, list) {
+               list_del(&bus_res->list);
+               kfree(bus_res);
+       }
+}
+EXPORT_SYMBOL(pci_free_resource_list);
+
 void pci_bus_add_resource(struct pci_bus *bus, struct resource *res,
                          unsigned int flags)
 {
@@ -52,16 +78,12 @@ EXPORT_SYMBOL_GPL(pci_bus_resource_n);
 
 void pci_bus_remove_resources(struct pci_bus *bus)
 {
-       struct pci_bus_resource *bus_res, *tmp;
        int i;
 
        for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++)
                bus->resource[i] = NULL;
 
-       list_for_each_entry_safe(bus_res, tmp, &bus->resources, list) {
-               list_del(&bus_res->list);
-               kfree(bus_res);
-       }
+       pci_free_resource_list(&bus->resources);
 }
 
 /**
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1522,12 +1522,14 @@ unsigned int __devinit pci_scan_child_bu
        return max;
 }
 
-struct pci_bus * pci_create_bus(struct device *parent,
-               int bus, struct pci_ops *ops, void *sysdata)
+struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
+               struct pci_ops *ops, void *sysdata, struct list_head *resources)
 {
-       int error;
+       int error, i;
        struct pci_bus *b, *b2;
        struct device *dev;
+       struct pci_bus_resource *bus_res, *n;
+       struct resource *res;
 
        b = pci_alloc_bus();
        if (!b)
@@ -1577,8 +1579,20 @@ struct pci_bus * pci_create_bus(struct d
        pci_create_legacy_files(b);
 
        b->number = b->secondary = bus;
-       b->resource[0] = &ioport_resource;
-       b->resource[1] = &iomem_resource;
+
+       /* Add initial resources to the bus */
+       list_for_each_entry_safe(bus_res, n, resources, list)
+               list_move_tail(&bus_res->list, &b->resources);
+
+       if (parent)
+               dev_info(parent, "PCI host bridge to bus %s\n", dev_name(&b->dev));
+       else
+               printk(KERN_INFO "PCI host bridge to bus %s\n", dev_name(&b->dev));
+
+       pci_bus_for_each_resource(b, res, i) {
+               if (res)
+                       dev_info(&b->dev, "root bus resource %pR\n", res);
+       }
 
        return b;
 
@@ -1594,18 +1608,58 @@ err_out:
        return NULL;
 }
 
+struct pci_bus * __devinit pci_scan_root_bus(struct device *parent, int bus,
+               struct pci_ops *ops, void *sysdata, struct list_head *resources)
+{
+       struct pci_bus *b;
+
+       b = pci_create_root_bus(parent, bus, ops, sysdata, resources);
+       if (!b)
+               return NULL;
+
+       b->subordinate = pci_scan_child_bus(b);
+       pci_bus_add_devices(b);
+       return b;
+}
+EXPORT_SYMBOL(pci_scan_root_bus);
+
+/* Deprecated; use pci_scan_root_bus() instead */
 struct pci_bus * __devinit pci_scan_bus_parented(struct device *parent,
                int bus, struct pci_ops *ops, void *sysdata)
 {
+       LIST_HEAD(resources);
        struct pci_bus *b;
 
-       b = pci_create_bus(parent, bus, ops, sysdata);
+       pci_add_resource(&resources, &ioport_resource);
+       pci_add_resource(&resources, &iomem_resource);
+       b = pci_create_root_bus(parent, bus, ops, sysdata, &resources);
        if (b)
                b->subordinate = pci_scan_child_bus(b);
+       else
+               pci_free_resource_list(&resources);
        return b;
 }
 EXPORT_SYMBOL(pci_scan_bus_parented);
 
+struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
+                                       void *sysdata)
+{
+       LIST_HEAD(resources);
+       struct pci_bus *b;
+
+       pci_add_resource(&resources, &ioport_resource);
+       pci_add_resource(&resources, &iomem_resource);
+       b = pci_create_root_bus(NULL, bus, ops, sysdata, &resources);
+       if (b) {
+               b->subordinate = pci_scan_child_bus(b);
+               pci_bus_add_devices(b);
+       } else {
+               pci_free_resource_list(&resources);
+       }
+       return b;
+}
+EXPORT_SYMBOL(pci_scan_bus);
+
 #ifdef CONFIG_HOTPLUG
 /**
  * pci_rescan_bus - scan a PCI bus for devices.
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -660,17 +660,13 @@ extern struct pci_bus *pci_find_bus(int
 void pci_bus_add_devices(const struct pci_bus *bus);
 struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
                                      struct pci_ops *ops, void *sysdata);
-static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
-                                          void *sysdata)
-{
-       struct pci_bus *root_bus;
-       root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
-       if (root_bus)
-               pci_bus_add_devices(root_bus);
-       return root_bus;
-}
-struct pci_bus *pci_create_bus(struct device *parent, int bus,
-                              struct pci_ops *ops, void *sysdata);
+struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata);
+struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
+                                   struct pci_ops *ops, void *sysdata,
+                                   struct list_head *resources);
+struct pci_bus * __devinit pci_scan_root_bus(struct device *parent, int bus,
+                                            struct pci_ops *ops, void *sysdata,
+                                            struct list_head *resources);
 struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
                                int busnr);
 void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
@@ -910,6 +906,8 @@ int pci_request_selected_regions_exclusi
 void pci_release_selected_regions(struct pci_dev *, int);
 
 /* drivers/pci/bus.c */
+void pci_add_resource(struct list_head *resources, struct resource *res);
+void pci_free_resource_list(struct list_head *resources);
 void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags);
 struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n);
 void pci_bus_remove_resources(struct pci_bus *bus);