Merge branch 'pci/irq-fixups' into next

* pci/irq-fixups:
  PCI: Inline and remove pcibios_update_irq()
  PCI: Remove unused pci_fixup_irqs() function
  sparc/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks
  unicore32/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks
  tile/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks
  MIPS: PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks
  m68k/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks
  alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks
  sh/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks
  sh/PCI: Remove __init optimisations from IRQ mapping functions/data
  MIPS: PCI: Fix pcibios_scan_bus() NULL check code path

19 files changed, 219 insertions, 75 deletions

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 5f387ee5b5c5..d558287c6133 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -312,8 +312,9 @@ common_init_pci(void)
 {
 	struct pci_controller *hose;
 	struct list_head resources;
+	struct pci_host_bridge *bridge;
 	struct pci_bus *bus;
-	int next_busno;
+	int ret, next_busno;
 	int need_domain_info = 0;
 	u32 pci_mem_end;
 	u32 sg_base;
@@ -336,11 +337,25 @@ common_init_pci(void)
 		pci_add_resource_offset(&resources, hose->mem_space,
 					hose->mem_space->start);
 
-		bus = pci_scan_root_bus(NULL, next_busno, alpha_mv.pci_ops,
-					hose, &resources);
-		if (!bus)
+		bridge = pci_alloc_host_bridge(0);
+		if (!bridge)
 			continue;
-		hose->bus = bus;
+
+		list_splice_init(&resources, &bridge->windows);
+		bridge->dev.parent = NULL;
+		bridge->sysdata = hose;
+		bridge->busnr = next_busno;
+		bridge->ops = alpha_mv.pci_ops;
+		bridge->swizzle_irq = alpha_mv.pci_swizzle;
+		bridge->map_irq = alpha_mv.pci_map_irq;
+
+		ret = pci_scan_root_bus_bridge(bridge);
+		if (ret) {
+			pci_free_host_bridge(bridge);
+			continue;
+		}
+
+		bus = hose->bus = bridge->bus;
 		hose->need_domain_info = need_domain_info;
 		next_busno = bus->busn_res.end + 1;
 		/* Don't allow 8-bit bus number overflow inside the hose -
@@ -354,7 +369,6 @@ common_init_pci(void)
 	pcibios_claim_console_setup();
 
 	pci_assign_unassigned_resources();
-	pci_fixup_irqs(alpha_mv.pci_swizzle, alpha_mv.pci_map_irq);
 	for (hose = hose_head; hose; hose = hose->next) {
 		bus = hose->bus;
 		if (bus)
@@ -362,7 +376,6 @@ common_init_pci(void)
 	}
 }
 
-
 struct pci_controller * __init
 alloc_pci_controller(void)
 {
diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
index 2cfaa0e5c577..8ae04a121186 100644
--- a/arch/alpha/kernel/sys_nautilus.c
+++ b/arch/alpha/kernel/sys_nautilus.c
@@ -194,22 +194,46 @@ static struct resource irongate_mem = {
 	.name	= "Irongate PCI MEM",
 	.flags	= IORESOURCE_MEM,
 };
+static struct resource busn_resource = {
+	.name	= "PCI busn",
+	.start	= 0,
+	.end	= 255,
+	.flags	= IORESOURCE_BUS,
+};
 
 void __init
 nautilus_init_pci(void)
 {
 	struct pci_controller *hose = hose_head;
+	struct pci_host_bridge *bridge;
 	struct pci_bus *bus;
 	struct pci_dev *irongate;
 	unsigned long bus_align, bus_size, pci_mem;
 	unsigned long memtop = max_low_pfn << PAGE_SHIFT;
+	int ret;
+
+	bridge = pci_alloc_host_bridge(0);
+	if (!bridge)
+		return;
+
+	pci_add_resource(&bridge->windows, &ioport_resource);
+	pci_add_resource(&bridge->windows, &iomem_resource);
+	pci_add_resource(&bridge->windows, &busn_resource);
+	bridge->dev.parent = NULL;
+	bridge->sysdata = hose;
+	bridge->busnr = 0;
+	bridge->ops = alpha_mv.pci_ops;
+	bridge->swizzle_irq = alpha_mv.pci_swizzle;
+	bridge->map_irq = alpha_mv.pci_map_irq;
 
 	/* Scan our single hose.  */
-	bus = pci_scan_bus(0, alpha_mv.pci_ops, hose);
-	if (!bus)
+	ret = pci_scan_root_bus_bridge(bridge);
+	if (ret) {
+		pci_free_host_bridge(bridge);
 		return;
+	}
 
-	hose->bus = bus;
+	bus = hose->bus = bridge->bus;
 	pcibios_claim_one_bus(bus);
 
 	irongate = pci_get_bus_and_slot(0, 0);
@@ -254,7 +278,6 @@ nautilus_init_pci(void)
 	/* pci_common_swizzle() relies on bus->self being NULL
 	   for the root bus, so just clear it. */
 	bus->self = NULL;
-	pci_fixup_irqs(alpha_mv.pci_swizzle, alpha_mv.pci_map_irq);
 	pci_bus_add_devices(bus);
 }
 
diff --git a/arch/m68k/coldfire/pci.c b/arch/m68k/coldfire/pci.c
index 6a640be48568..3097fa2ca746 100644
--- a/arch/m68k/coldfire/pci.c
+++ b/arch/m68k/coldfire/pci.c
@@ -243,6 +243,13 @@ static struct resource mcf_pci_io = {
 	.flags	= IORESOURCE_IO,
 };
 
+static struct resource busn_resource = {
+	.name	= "PCI busn",
+	.start	= 0,
+	.end	= 255,
+	.flags	= IORESOURCE_BUS,
+};
+
 /*
  * Interrupt mapping and setting.
  */
@@ -258,6 +265,13 @@ static int mcf_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 static int __init mcf_pci_init(void)
 {
+	struct pci_host_bridge *bridge;
+	int ret;
+
+	bridge = pci_alloc_host_bridge(0);
+	if (!bridge)
+		return -ENOMEM;
+
 	pr_info("ColdFire: PCI bus initialization...\n");
 
 	/* Reset the external PCI bus */
@@ -312,14 +326,28 @@ static int __init mcf_pci_init(void)
 	set_current_state(TASK_UNINTERRUPTIBLE);
 	schedule_timeout(msecs_to_jiffies(200));
 
-	rootbus = pci_scan_bus(0, &mcf_pci_ops, NULL);
-	if (!rootbus)
-		return -ENODEV;
+
+	pci_add_resource(&bridge->windows, &ioport_resource);
+	pci_add_resource(&bridge->windows, &iomem_resource);
+	pci_add_resource(&bridge->windows, &busn_resource);
+	bridge->dev.parent = NULL;
+	bridge->sysdata = NULL;
+	bridge->busnr = 0;
+	bridge->ops = &mcf_pci_ops;
+	bridge->swizzle_irq = pci_common_swizzle;
+	bridge->map_irq = mcf_pci_map_irq;
+
+	ret = pci_scan_root_bus_bridge(bridge);
+	if (ret) {
+		pci_free_host_bridge(bridge);
+		return ret;
+	}
+
+	rootbus = bridge->bus;
 
 	rootbus->resource[0] = &mcf_pci_io;
 	rootbus->resource[1] = &mcf_pci_mem;
 
-	pci_fixup_irqs(pci_common_swizzle, mcf_pci_map_irq);
 	pci_bus_size_bridges(rootbus);
 	pci_bus_assign_resources(rootbus);
 	pci_bus_add_devices(rootbus);
diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c
index 174575a9a112..fc7726088103 100644
--- a/arch/mips/pci/pci-legacy.c
+++ b/arch/mips/pci/pci-legacy.c
@@ -78,6 +78,12 @@ static void pcibios_scanbus(struct pci_controller *hose)
 	static int need_domain_info;
 	LIST_HEAD(resources);
 	struct pci_bus *bus;
+	struct pci_host_bridge *bridge;
+	int ret;
+
+	bridge = pci_alloc_host_bridge(0);
+	if (!bridge)
+		return;
 
 	if (hose->get_busno && pci_has_flag(PCI_PROBE_ONLY))
 		next_busno = (*hose->get_busno)();
@@ -87,18 +93,24 @@ static void pcibios_scanbus(struct pci_controller *hose)
 	pci_add_resource_offset(&resources,
 				hose->io_resource, hose->io_offset);
 	pci_add_resource(&resources, hose->busn_resource);
-	bus = pci_scan_root_bus(NULL, next_busno, hose->pci_ops, hose,
-				&resources);
-	hose->bus = bus;
+	list_splice_init(&resources, &bridge->windows);
+	bridge->dev.parent = NULL;
+	bridge->sysdata = hose;
+	bridge->busnr = next_busno;
+	bridge->ops = hose->pci_ops;
+	bridge->swizzle_irq = pci_common_swizzle;
+	bridge->map_irq = pcibios_map_irq;
+	ret = pci_scan_root_bus_bridge(bridge);
+	if (ret) {
+		pci_free_host_bridge(bridge);
+		return;
+	}
+
+	hose->bus = bus = bridge->bus;
 
 	need_domain_info = need_domain_info || pci_domain_nr(bus);
 	set_pci_need_domain_info(hose, need_domain_info);
 
-	if (!bus) {
-		pci_free_resource_list(&resources);
-		return;
-	}
-
 	next_busno = bus->busn_res.end + 1;
 	/* Don't allow 8-bit bus number overflow inside the hose -
 	   reserve some space for bridges. */
@@ -224,8 +236,6 @@ static int __init pcibios_init(void)
 	list_for_each_entry(hose, &controllers, list)
 		pcibios_scanbus(hose);
 
-	pci_fixup_irqs(pci_common_swizzle, pcibios_map_irq);
-
 	pci_initialized = 1;
 
 	return 0;
diff --git a/arch/sh/drivers/pci/fixups-cayman.c b/arch/sh/drivers/pci/fixups-cayman.c
index edc2fb7a5bb2..32467884d6f7 100644
--- a/arch/sh/drivers/pci/fixups-cayman.c
+++ b/arch/sh/drivers/pci/fixups-cayman.c
@@ -5,7 +5,7 @@
 #include <cpu/irq.h>
 #include "pci-sh5.h"
 
-int __init pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int result = -1;
 
diff --git a/arch/sh/drivers/pci/fixups-dreamcast.c b/arch/sh/drivers/pci/fixups-dreamcast.c
index 1d1c5a227e50..9d597f7ab8dd 100644
--- a/arch/sh/drivers/pci/fixups-dreamcast.c
+++ b/arch/sh/drivers/pci/fixups-dreamcast.c
@@ -76,7 +76,7 @@ static void gapspci_fixup_resources(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, gapspci_fixup_resources);
 
-int __init pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	/*
 	 * The interrupt routing semantics here are quite trivial.
diff --git a/arch/sh/drivers/pci/fixups-r7780rp.c b/arch/sh/drivers/pci/fixups-r7780rp.c
index 57ed3f09d0c2..2c9b58f848dd 100644
--- a/arch/sh/drivers/pci/fixups-r7780rp.c
+++ b/arch/sh/drivers/pci/fixups-r7780rp.c
@@ -15,7 +15,7 @@
 #include <linux/sh_intc.h>
 #include "pci-sh4.h"
 
-int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	return evt2irq(0xa20) + slot;
 }
diff --git a/arch/sh/drivers/pci/fixups-rts7751r2d.c b/arch/sh/drivers/pci/fixups-rts7751r2d.c
index eaddb56c45c6..358ac104f08c 100644
--- a/arch/sh/drivers/pci/fixups-rts7751r2d.c
+++ b/arch/sh/drivers/pci/fixups-rts7751r2d.c
@@ -20,18 +20,18 @@
 #define PCIMCR_MRSET_OFF	0xBFFFFFFF
 #define PCIMCR_RFSH_OFF		0xFFFFFFFB
 
-static u8 rts7751r2d_irq_tab[] __initdata = {
+static u8 rts7751r2d_irq_tab[] = {
 	IRQ_PCI_INTA,
 	IRQ_PCI_INTB,
 	IRQ_PCI_INTC,
 	IRQ_PCI_INTD,
 };
 
-static char lboxre2_irq_tab[] __initdata = {
+static char lboxre2_irq_tab[] = {
 	IRQ_ETH0, IRQ_ETH1, IRQ_INTA, IRQ_INTD,
 };
 
-int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	if (mach_is_lboxre2())
 		return lboxre2_irq_tab[slot];
diff --git a/arch/sh/drivers/pci/fixups-sdk7780.c b/arch/sh/drivers/pci/fixups-sdk7780.c
index c0a015ae6ecf..24e96dfbdb22 100644
--- a/arch/sh/drivers/pci/fixups-sdk7780.c
+++ b/arch/sh/drivers/pci/fixups-sdk7780.c
@@ -22,7 +22,7 @@
 #define IRQ_INTD	evt2irq(0xa80)
 
 /* IDSEL [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] */
-static char sdk7780_irq_tab[4][16] __initdata = {
+static char sdk7780_irq_tab[4][16] = {
 	/* INTA */
 	{ IRQ_INTA, IRQ_INTD, IRQ_INTC, IRQ_INTD, -1, -1, -1, -1, -1, -1,
 	  -1, -1, -1, -1, -1, -1 },
@@ -37,7 +37,7 @@ static char sdk7780_irq_tab[4][16] __initdata = {
 	  -1, -1, -1 },
 };
 
-int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
        return sdk7780_irq_tab[pin-1][slot];
 }
diff --git a/arch/sh/drivers/pci/fixups-se7751.c b/arch/sh/drivers/pci/fixups-se7751.c
index 84a88ca92008..1cb8d0ac4fdb 100644
--- a/arch/sh/drivers/pci/fixups-se7751.c
+++ b/arch/sh/drivers/pci/fixups-se7751.c
@@ -7,7 +7,7 @@
 #include <linux/sh_intc.h>
 #include "pci-sh4.h"
 
-int __init pcibios_map_platform_irq(const struct pci_dev *, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *, u8 slot, u8 pin)
 {
         switch (slot) {
         case 0: return evt2irq(0x3a0);
diff --git a/arch/sh/drivers/pci/fixups-sh03.c b/arch/sh/drivers/pci/fixups-sh03.c
index 16207bef9f52..55ac1ba2c74f 100644
--- a/arch/sh/drivers/pci/fixups-sh03.c
+++ b/arch/sh/drivers/pci/fixups-sh03.c
@@ -4,7 +4,7 @@
 #include <linux/pci.h>
 #include <linux/sh_intc.h>
 
-int __init pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/sh/drivers/pci/fixups-snapgear.c b/arch/sh/drivers/pci/fixups-snapgear.c
index 6e33ba4cd076..a931e5928f58 100644
--- a/arch/sh/drivers/pci/fixups-snapgear.c
+++ b/arch/sh/drivers/pci/fixups-snapgear.c
@@ -19,7 +19,7 @@
 #include <linux/sh_intc.h>
 #include "pci-sh4.h"
 
-int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	int irq = -1;
 
diff --git a/arch/sh/drivers/pci/fixups-titan.c b/arch/sh/drivers/pci/fixups-titan.c
index bd1addb1b8be..a9d563e479d5 100644
--- a/arch/sh/drivers/pci/fixups-titan.c
+++ b/arch/sh/drivers/pci/fixups-titan.c
@@ -19,7 +19,7 @@
 #include <mach/titan.h>
 #include "pci-sh4.h"
 
-static char titan_irq_tab[] __initdata = {
+static char titan_irq_tab[] = {
 	TITAN_IRQ_WAN,
 	TITAN_IRQ_LAN,
 	TITAN_IRQ_MPCIA,
@@ -27,7 +27,7 @@ static char titan_irq_tab[] __initdata = {
 	TITAN_IRQ_USB,
 };
 
-int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	int irq = titan_irq_tab[slot];
 
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index c99ee286b69f..357278c88e98 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -39,8 +39,12 @@ static void pcibios_scanbus(struct pci_channel *hose)
 	LIST_HEAD(resources);
 	struct resource *res;
 	resource_size_t offset;
-	int i;
-	struct pci_bus *bus;
+	int i, ret;
+	struct pci_host_bridge *bridge;
+
+	bridge = pci_alloc_host_bridge(0);
+	if (!bridge)
+		return;
 
 	for (i = 0; i < hose->nr_resources; i++) {
 		res = hose->resources + i;
@@ -52,19 +56,26 @@ static void pcibios_scanbus(struct pci_channel *hose)
 		pci_add_resource_offset(&resources, res, offset);
 	}
 
-	bus = pci_scan_root_bus(NULL, next_busno, hose->pci_ops, hose,
-				&resources);
-	hose->bus = bus;
+	list_splice_init(&resources, &bridge->windows);
+	bridge->dev.parent = NULL;
+	bridge->sysdata = hose;
+	bridge->busnr = next_busno;
+	bridge->ops = hose->pci_ops;
+	bridge->swizzle_irq = pci_common_swizzle;
+	bridge->map_irq = pcibios_map_platform_irq;
+
+	ret = pci_scan_root_bus_bridge(bridge);
+	if (ret) {
+		pci_free_host_bridge(bridge);
+		return;
+	}
+
+	hose->bus = bridge->bus;
 
 	need_domain_info = need_domain_info || hose->index;
 	hose->need_domain_info = need_domain_info;
 
-	if (!bus) {
-		pci_free_resource_list(&resources);
-		return;
-	}
-
-	next_busno = bus->busn_res.end + 1;
+	next_busno = hose->bus->busn_res.end + 1;
 	/* Don't allow 8-bit bus number overflow inside the hose -
 	   reserve some space for bridges. */
 	if (next_busno > 224) {
@@ -72,9 +83,9 @@ static void pcibios_scanbus(struct pci_channel *hose)
 		need_domain_info = 1;
 	}
 
-	pci_bus_size_bridges(bus);
-	pci_bus_assign_resources(bus);
-	pci_bus_add_devices(bus);
+	pci_bus_size_bridges(hose->bus);
+	pci_bus_assign_resources(hose->bus);
+	pci_bus_add_devices(hose->bus);
 }
 
 /*
@@ -144,8 +155,6 @@ static int __init pcibios_init(void)
 	for (hose = hose_head; hose; hose = hose->next)
 		pcibios_scanbus(hose);
 
-	pci_fixup_irqs(pci_common_swizzle, pcibios_map_platform_irq);
-
 	dma_debug_add_bus(&pci_bus_type);
 
 	pci_initialized = 1;
diff --git a/arch/sh/drivers/pci/pcie-sh7786.c b/arch/sh/drivers/pci/pcie-sh7786.c
index a162a7f86b2e..0167a7352719 100644
--- a/arch/sh/drivers/pci/pcie-sh7786.c
+++ b/arch/sh/drivers/pci/pcie-sh7786.c
@@ -467,7 +467,7 @@ static int __init pcie_init(struct sh7786_pcie_port *port)
 	return 0;
 }
 
-int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
         return evt2irq(0xae0);
 }
diff --git a/arch/sparc/kernel/leon_pci.c b/arch/sparc/kernel/leon_pci.c
index 4371f72ff025..7b5c7072b006 100644
--- a/arch/sparc/kernel/leon_pci.c
+++ b/arch/sparc/kernel/leon_pci.c
@@ -25,6 +25,12 @@ void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info)
 {
 	LIST_HEAD(resources);
 	struct pci_bus *root_bus;
+	struct pci_host_bridge *bridge;
+	int ret;
+
+	bridge = pci_alloc_host_bridge(0);
+	if (!bridge)
+		return;
 
 	pci_add_resource_offset(&resources, &info->io_space,
 				info->io_space.start - 0x1000);
@@ -32,15 +38,21 @@ void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info)
 	info->busn.flags = IORESOURCE_BUS;
 	pci_add_resource(&resources, &info->busn);
 
-	root_bus = pci_scan_root_bus(&ofdev->dev, 0, info->ops, info,
-				     &resources);
-	if (!root_bus) {
-		pci_free_resource_list(&resources);
+	list_splice_init(&resources, &bridge->windows);
+	bridge->dev.parent = &ofdev->dev;
+	bridge->sysdata = info;
+	bridge->busnr = 0;
+	bridge->ops = info->ops;
+	bridge->swizzle_irq = pci_common_swizzle;
+	bridge->map_irq = info->map_irq;
+
+	ret = pci_scan_root_bus_bridge(bridge);
+	if (ret) {
+		pci_free_host_bridge(bridge);
 		return;
 	}
 
-	/* Setup IRQs of all devices using custom routines */
-	pci_fixup_irqs(pci_common_swizzle, info->map_irq);
+	root_bus = bridge->bus;
 
 	/* Assign devices with resources */
 	pci_assign_unassigned_resources();
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index bc6656b5708b..884826157765 100644
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -274,6 +274,7 @@ static void fixup_read_and_payload_sizes(void)
  */
 int __init pcibios_init(void)
 {
+	struct pci_host_bridge *bridge;
 	int i;
 
 	pr_info("PCI: Probing PCI hardware\n");
@@ -306,16 +307,26 @@ int __init pcibios_init(void)
 
 			pci_add_resource(&resources, &ioport_resource);
 			pci_add_resource(&resources, &iomem_resource);
-			bus = pci_scan_root_bus(NULL, 0, controller->ops,
-						controller, &resources);
+
+			bridge = pci_alloc_host_bridge(0);
+			if (!bridge)
+				break;
+
+			list_splice_init(&resources, &bridge->windows);
+			bridge->dev.parent = NULL;
+			bridge->sysdata = controller;
+			bridge->busnr = 0;
+			bridge->ops = controller->ops;
+			bridge->swizzle_irq = pci_common_swizzle;
+			bridge->map_irq = tile_map_irq;
+
+			pci_scan_root_bus_bridge(bridge);
+			bus = bridge->bus;
 			controller->root_bus = bus;
 			controller->last_busno = bus->busn_res.end;
 		}
 	}
 
-	/* Do machine dependent PCI interrupt routing */
-	pci_fixup_irqs(pci_common_swizzle, tile_map_irq);
-
 	/*
 	 * This comes from the generic Linux PCI driver.
 	 *
diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c
index b554a68eea1b..e68317083ac7 100644
--- a/arch/tile/kernel/pci_gx.c
+++ b/arch/tile/kernel/pci_gx.c
@@ -669,6 +669,7 @@ int __init pcibios_init(void)
 	resource_size_t offset;
 	LIST_HEAD(resources);
 	int next_busno;
+	struct pci_host_bridge *bridge;
 	int i;
 
 	tile_pci_init();
@@ -881,15 +882,25 @@ int __init pcibios_init(void)
 					controller->mem_offset);
 		pci_add_resource(&resources, &controller->io_space);
 		controller->first_busno = next_busno;
-		bus = pci_scan_root_bus(NULL, next_busno, controller->ops,
-					controller, &resources);
+
+		bridge = pci_alloc_host_bridge(0);
+		if (!bridge)
+			break;
+
+		list_splice_init(&resources, &bridge->windows);
+		bridge->dev.parent = NULL;
+		bridge->sysdata = controller;
+		bridge->busnr = next_busno;
+		bridge->ops = controller->ops;
+		bridge->swizzle_irq = pci_common_swizzle;
+		bridge->map_irq = tile_map_irq;
+
+		pci_scan_root_bus_bridge(bridge);
+		bus = bridge->bus;
 		controller->root_bus = bus;
 		next_busno = bus->busn_res.end + 1;
 	}
 
-	/* Do machine dependent PCI interrupt routing */
-	pci_fixup_irqs(pci_common_swizzle, tile_map_irq);
-
 	/*
 	 * This comes from the generic Linux PCI driver.
 	 *
diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c
index 1053bca1f8aa..9f26840e41b1 100644
--- a/arch/unicore32/kernel/pci.c
+++ b/arch/unicore32/kernel/pci.c
@@ -101,7 +101,7 @@ void pci_puv3_preinit(void)
 	writel(readl(PCIBRI_CMD) | PCIBRI_CMD_IO | PCIBRI_CMD_MEM, PCIBRI_CMD);
 }
 
-static int __init pci_puv3_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+static int pci_puv3_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if (dev->bus->number == 0) {
 #ifdef CONFIG_ARCH_FPGA /* 4 pci slots */
@@ -252,19 +252,46 @@ void pcibios_fixup_bus(struct pci_bus *bus)
 }
 EXPORT_SYMBOL(pcibios_fixup_bus);
 
+static struct resource busn_resource = {
+	.name	= "PCI busn",
+	.start	= 0,
+	.end	= 255,
+	.flags	= IORESOURCE_BUS,
+};
+
 static int __init pci_common_init(void)
 {
 	struct pci_bus *puv3_bus;
+	struct pci_host_bridge *bridge;
+	int ret;
+
+	bridge = pci_alloc_host_bridge(0);
+	if (!bridge)
+		return -ENOMEM;
 
 	pci_puv3_preinit();
 
-	puv3_bus = pci_scan_bus(0, &pci_puv3_ops, NULL);
+	pci_add_resource(&bridge->windows, &ioport_resource);
+	pci_add_resource(&bridge->windows, &iomem_resource);
+	pci_add_resource(&bridge->windows, &busn_resource);
+	bridge->sysdata = NULL;
+	bridge->busnr = 0;
+	bridge->ops = &pci_puv3_ops;
+	bridge->swizzle_irq = pci_common_swizzle;
+	bridge->map_irq = pci_puv3_map_irq;
+
+	/* Scan our single hose.  */
+	ret = pci_scan_root_bus_bridge(bridge);
+	if (ret) {
+		pci_free_host_bridge(bridge);
+		return;
+	}
+
+	puv3_bus = bridge->bus;
 
 	if (!puv3_bus)
 		panic("PCI: unable to scan bus!");
 
-	pci_fixup_irqs(pci_common_swizzle, pci_puv3_map_irq);
-
 	pci_bus_size_bridges(puv3_bus);
 	pci_bus_assign_resources(puv3_bus);
 	pci_bus_add_devices(puv3_bus);