diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 49e5195..0c01261f 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -12,6 +12,7 @@
 	char name[16];
 	unsigned int res_num;
 	struct resource *res;
+	resource_size_t *res_offset;
 	struct pci_sysdata sd;
 #ifdef	CONFIG_PCI_MMCONFIG
 	bool mcfg_added;
@@ -323,6 +324,7 @@
 	res->flags = flags;
 	res->start = start;
 	res->end = end;
+	info->res_offset[info->res_num] = addr.translation_offset;
 
 	if (!pci_use_crs) {
 		dev_printk(KERN_DEBUG, &info->bridge->dev,
@@ -392,7 +394,8 @@
 				 "ignoring host bridge window %pR (conflicts with %s %pR)\n",
 				 res, conflict->name, conflict);
 		else
-			pci_add_resource(resources, res);
+			pci_add_resource_offset(resources, res,
+					info->res_offset[i]);
 	}
 }
 
@@ -400,6 +403,8 @@
 {
 	kfree(info->res);
 	info->res = NULL;
+	kfree(info->res_offset);
+	info->res_offset = NULL;
 	info->res_num = 0;
 }
 
@@ -450,10 +455,20 @@
 		return;
 
 	size = sizeof(*info->res) * info->res_num;
-	info->res_num = 0;
 	info->res = kzalloc(size, GFP_KERNEL);
-	if (!info->res)
+	if (!info->res) {
+		info->res_num = 0;
 		return;
+	}
+
+	size = sizeof(*info->res_offset) * info->res_num;
+	info->res_num = 0;
+	info->res_offset = kzalloc(size, GFP_KERNEL);
+	if (!info->res_offset) {
+		kfree(info->res);
+		info->res = NULL;
+		return;
+	}
 
 	acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
 				info);
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 720e973f..52dbf1a 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -626,7 +626,7 @@
 		pcibios_disable_irq(dev);
 }
 
-int pci_ext_cfg_avail(struct pci_dev *dev)
+int pci_ext_cfg_avail(void)
 {
 	if (raw_pci_ext_ops)
 		return 1;
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index f1ea71c..a1dee29 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -50,7 +50,7 @@
 	if (!dev->subordinate)
 		goto out;
 
-	acpi_pci_irq_del_prt(dev->subordinate);
+	acpi_pci_irq_del_prt(pci_domain_nr(dev->bus), dev->subordinate->number);
 
 	device->ops.bind = NULL;
 	device->ops.unbind = NULL;
@@ -64,7 +64,7 @@
 {
 	acpi_status status;
 	acpi_handle handle;
-	struct pci_bus *bus;
+	unsigned char bus;
 	struct pci_dev *dev;
 
 	dev = acpi_get_pci_dev(device->handle);
@@ -102,11 +102,11 @@
 		goto out;
 
 	if (dev->subordinate)
-		bus = dev->subordinate;
+		bus = dev->subordinate->number;
 	else
-		bus = dev->bus;
+		bus = dev->bus->number;
 
-	acpi_pci_irq_add_prt(device->handle, bus);
+	acpi_pci_irq_add_prt(device->handle, pci_domain_nr(dev->bus), bus);
 
 out:
 	pci_dev_put(dev);
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 0eefa12..8835cc3 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -184,7 +184,7 @@
 	}
 }
 
-static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
+static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
 				  struct acpi_pci_routing_table *prt)
 {
 	struct acpi_prt_entry *entry;
@@ -198,8 +198,8 @@
 	 * 1=INTA, 2=INTB.  We use the PCI encoding throughout, so convert
 	 * it here.
 	 */
-	entry->id.segment = pci_domain_nr(bus);
-	entry->id.bus = bus->number;
+	entry->id.segment = segment;
+	entry->id.bus = bus;
 	entry->id.device = (prt->address >> 16) & 0xFFFF;
 	entry->pin = prt->pin + 1;
 
@@ -244,7 +244,7 @@
 	return 0;
 }
 
-int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
+int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
 {
 	acpi_status status;
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@@ -273,7 +273,7 @@
 
 	entry = buffer.pointer;
 	while (entry && (entry->length > 0)) {
-		acpi_pci_irq_add_entry(handle, bus, entry);
+		acpi_pci_irq_add_entry(handle, segment, bus, entry);
 		entry = (struct acpi_pci_routing_table *)
 		    ((unsigned long)entry + entry->length);
 	}
@@ -282,17 +282,16 @@
 	return 0;
 }
 
-void acpi_pci_irq_del_prt(struct pci_bus *bus)
+void acpi_pci_irq_del_prt(int segment, int bus)
 {
 	struct acpi_prt_entry *entry, *tmp;
 
 	printk(KERN_DEBUG
 	       "ACPI: Delete PCI Interrupt Routing Table for %04x:%02x\n",
-	       pci_domain_nr(bus), bus->number);
+	       segment, bus);
 	spin_lock(&acpi_prt_lock);
 	list_for_each_entry_safe(entry, tmp, &acpi_prt_list, list) {
-		if (pci_domain_nr(bus) == entry->id.segment
-			&& bus->number == entry->id.bus) {
+		if (segment == entry->id.segment && bus == entry->id.bus) {
 			list_del(&entry->list);
 			kfree(entry);
 		}
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index bce469c..ab781f0 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -454,6 +454,7 @@
 	acpi_handle handle;
 	struct acpi_device *child;
 	u32 flags, base_flags;
+	bool is_osc_granted = false;
 
 	root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
 	if (!root)
@@ -501,6 +502,20 @@
 	strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
 	device->driver_data = root;
 
+	printk(KERN_INFO PREFIX "%s [%s] (domain %04x %pR)\n",
+	       acpi_device_name(device), acpi_device_bid(device),
+	       root->segment, &root->secondary);
+
+	/*
+	 * PCI Routing Table
+	 * -----------------
+	 * Evaluate and parse _PRT, if exists.
+	 */
+	status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
+	if (ACPI_SUCCESS(status))
+		result = acpi_pci_irq_add_prt(device->handle, root->segment,
+					      root->secondary.start);
+
 	root->mcfg_addr = acpi_pci_root_get_mcfg_addr(device->handle);
 
 	/*
@@ -510,6 +525,60 @@
 	flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT;
 	acpi_pci_osc_support(root, flags);
 
+	/* Indicate support for various _OSC capabilities. */
+	if (pci_ext_cfg_avail())
+		flags |= OSC_EXT_PCI_CONFIG_SUPPORT;
+	if (pcie_aspm_support_enabled()) {
+		flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
+		OSC_CLOCK_PWR_CAPABILITY_SUPPORT;
+	}
+	if (pci_msi_enabled())
+		flags |= OSC_MSI_SUPPORT;
+	if (flags != base_flags) {
+		status = acpi_pci_osc_support(root, flags);
+		if (ACPI_FAILURE(status)) {
+			dev_info(&device->dev, "ACPI _OSC support "
+				"notification failed, disabling PCIe ASPM\n");
+			pcie_no_aspm();
+			flags = base_flags;
+		}
+	}
+	if (!pcie_ports_disabled
+	    && (flags & ACPI_PCIE_REQ_SUPPORT) == ACPI_PCIE_REQ_SUPPORT) {
+		flags = OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL
+			| OSC_PCI_EXPRESS_NATIVE_HP_CONTROL
+			| OSC_PCI_EXPRESS_PME_CONTROL;
+
+		if (pci_aer_available()) {
+			if (aer_acpi_firmware_first())
+				dev_dbg(&device->dev,
+					"PCIe errors handled by BIOS.\n");
+			else
+				flags |= OSC_PCI_EXPRESS_AER_CONTROL;
+		}
+
+		dev_info(&device->dev,
+			"Requesting ACPI _OSC control (0x%02x)\n", flags);
+
+		status = acpi_pci_osc_control_set(device->handle, &flags,
+				       OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);
+		if (ACPI_SUCCESS(status)) {
+			is_osc_granted = true;
+			dev_info(&device->dev,
+				"ACPI _OSC control (0x%02x) granted\n", flags);
+		} else {
+			is_osc_granted = false;
+			dev_info(&device->dev,
+				"ACPI _OSC request failed (%s), "
+				"returned control mask: 0x%02x\n",
+				acpi_format_exception(status), flags);
+		}
+	} else {
+		dev_info(&device->dev,
+			"Unable to request _OSC control "
+			"(_OSC support mask: 0x%02x)\n", flags);
+	}
+
 	/*
 	 * TBD: Need PCI interface for enumeration/configuration of roots.
 	 */
@@ -518,10 +587,6 @@
 	list_add_tail(&root->node, &acpi_pci_roots);
 	mutex_unlock(&acpi_pci_root_lock);
 
-	printk(KERN_INFO PREFIX "%s [%s] (domain %04x %pR)\n",
-	       acpi_device_name(device), acpi_device_bid(device),
-	       root->segment, &root->secondary);
-
 	/*
 	 * Scan the Root Bridge
 	 * --------------------
@@ -548,80 +613,19 @@
 		goto out_del_root;
 
 	/*
-	 * PCI Routing Table
-	 * -----------------
-	 * Evaluate and parse _PRT, if exists.
-	 */
-	status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
-	if (ACPI_SUCCESS(status))
-		result = acpi_pci_irq_add_prt(device->handle, root->bus);
-
-	/*
 	 * Scan and bind all _ADR-Based Devices
 	 */
 	list_for_each_entry(child, &device->children, node)
 		acpi_pci_bridge_scan(child);
 
-	/* Indicate support for various _OSC capabilities. */
-	if (pci_ext_cfg_avail(root->bus->self))
-		flags |= OSC_EXT_PCI_CONFIG_SUPPORT;
-	if (pcie_aspm_support_enabled())
-		flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
-			OSC_CLOCK_PWR_CAPABILITY_SUPPORT;
-	if (pci_msi_enabled())
-		flags |= OSC_MSI_SUPPORT;
-	if (flags != base_flags) {
-		status = acpi_pci_osc_support(root, flags);
-		if (ACPI_FAILURE(status)) {
-			dev_info(root->bus->bridge, "ACPI _OSC support "
-				"notification failed, disabling PCIe ASPM\n");
-			pcie_no_aspm();
-			flags = base_flags;
-		}
-	}
-
-	if (!pcie_ports_disabled
-	    && (flags & ACPI_PCIE_REQ_SUPPORT) == ACPI_PCIE_REQ_SUPPORT) {
-		flags = OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL
-			| OSC_PCI_EXPRESS_NATIVE_HP_CONTROL
-			| OSC_PCI_EXPRESS_PME_CONTROL;
-
-		if (pci_aer_available()) {
-			if (aer_acpi_firmware_first())
-				dev_dbg(root->bus->bridge,
-					"PCIe errors handled by BIOS.\n");
-			else
-				flags |= OSC_PCI_EXPRESS_AER_CONTROL;
-		}
-
-		dev_info(root->bus->bridge,
-			"Requesting ACPI _OSC control (0x%02x)\n", flags);
-
-		status = acpi_pci_osc_control_set(device->handle, &flags,
-					OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);
-		if (ACPI_SUCCESS(status)) {
-			dev_info(root->bus->bridge,
-				"ACPI _OSC control (0x%02x) granted\n", flags);
-			if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) {
-				/*
-				 * We have ASPM control, but the FADT indicates
-				 * that it's unsupported. Clear it.
-				 */
-				pcie_clear_aspm(root->bus);
-			}
-		} else {
-			dev_info(root->bus->bridge,
-				"ACPI _OSC request failed (%s), "
-				"returned control mask: 0x%02x\n",
-				acpi_format_exception(status), flags);
-			pr_info("ACPI _OSC control for PCIe not granted, "
-				"disabling ASPM\n");
-			pcie_no_aspm();
-		}
+	/* ASPM setting */
+	if (is_osc_granted) {
+		if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM)
+			pcie_clear_aspm(root->bus);
 	} else {
-		dev_info(root->bus->bridge,
-			 "Unable to request _OSC control "
-			 "(_OSC support mask: 0x%02x)\n", flags);
+		pr_info("ACPI _OSC control for PCIe not granted, "
+			"disabling ASPM\n");
+		pcie_no_aspm();
 	}
 
 	pci_acpi_add_bus_pm_notifier(device, root->bus);
@@ -634,6 +638,8 @@
 	mutex_lock(&acpi_pci_root_lock);
 	list_del(&root->node);
 	mutex_unlock(&acpi_pci_root_lock);
+
+	acpi_pci_irq_del_prt(root->segment, root->secondary.start);
 end:
 	kfree(root);
 	return result;
@@ -644,12 +650,19 @@
 	struct acpi_pci_root *root = acpi_driver_data(device);
 	struct acpi_pci_driver *driver;
 
+	if (system_state != SYSTEM_BOOTING)
+		pci_assign_unassigned_bus_resources(root->bus);
+
 	mutex_lock(&acpi_pci_root_lock);
 	list_for_each_entry(driver, &acpi_pci_drivers, node)
 		if (driver->add)
 			driver->add(root);
 	mutex_unlock(&acpi_pci_root_lock);
 
+	/* need to after hot-added ioapic is registered */
+	if (system_state != SYSTEM_BOOTING)
+		pci_enable_bridges(root->bus);
+
 	pci_bus_add_devices(root->bus);
 
 	return 0;
@@ -657,17 +670,29 @@
 
 static int acpi_pci_root_remove(struct acpi_device *device, int type)
 {
+	acpi_status status;
+	acpi_handle handle;
 	struct acpi_pci_root *root = acpi_driver_data(device);
 	struct acpi_pci_driver *driver;
 
+	pci_stop_root_bus(root->bus);
+
 	mutex_lock(&acpi_pci_root_lock);
-	list_for_each_entry(driver, &acpi_pci_drivers, node)
+	list_for_each_entry_reverse(driver, &acpi_pci_drivers, node)
 		if (driver->remove)
 			driver->remove(root);
+	mutex_unlock(&acpi_pci_root_lock);
 
 	device_set_run_wake(root->bus->bridge, false);
 	pci_acpi_remove_bus_pm_notifier(device);
 
+	status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
+	if (ACPI_SUCCESS(status))
+		acpi_pci_irq_del_prt(root->segment, root->secondary.start);
+
+	pci_remove_root_bus(root->bus);
+
+	mutex_lock(&acpi_pci_root_lock);
 	list_del(&root->node);
 	mutex_unlock(&acpi_pci_root_lock);
 	kfree(root);
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 6241fd0..a543746 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -320,10 +320,7 @@
 		} else
 			next = dev->bus_list.next;
 
-		/* Run device routines with the device locked */
-		device_lock(&dev->dev);
 		retval = cb(dev, userdata);
-		device_unlock(&dev->dev);
 		if (retval)
 			break;
 	}
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index aeccc91..bafd2bb 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -106,7 +106,7 @@
 		virtfn->resource[i].name = pci_name(virtfn);
 		virtfn->resource[i].flags = res->flags;
 		size = resource_size(res);
-		do_div(size, iov->total);
+		do_div(size, iov->total_VFs);
 		virtfn->resource[i].start = res->start + size * id;
 		virtfn->resource[i].end = virtfn->resource[i].start + size - 1;
 		rc = request_resource(res, &virtfn->resource[i]);
@@ -194,7 +194,7 @@
 	u16 status;
 	struct pci_sriov *iov = dev->sriov;
 
-	if (!iov->nr_virtfn)
+	if (!iov->num_VFs)
 		return 0;
 
 	if (!(iov->cap & PCI_SRIOV_CAP_VFM))
@@ -216,7 +216,7 @@
 	u16 status;
 	struct pci_sriov *iov = container_of(work, struct pci_sriov, mtask);
 
-	for (i = iov->initial; i < iov->nr_virtfn; i++) {
+	for (i = iov->initial_VFs; i < iov->num_VFs; i++) {
 		state = readb(iov->mstate + i);
 		if (state == PCI_SRIOV_VFM_MI) {
 			writeb(PCI_SRIOV_VFM_AV, iov->mstate + i);
@@ -244,7 +244,7 @@
 	resource_size_t pa;
 	struct pci_sriov *iov = dev->sriov;
 
-	if (nr_virtfn <= iov->initial)
+	if (nr_virtfn <= iov->initial_VFs)
 		return 0;
 
 	pci_read_config_dword(dev, iov->pos + PCI_SRIOV_VFM, &table);
@@ -294,15 +294,15 @@
 	if (!nr_virtfn)
 		return 0;
 
-	if (iov->nr_virtfn)
+	if (iov->num_VFs)
 		return -EINVAL;
 
 	pci_read_config_word(dev, iov->pos + PCI_SRIOV_INITIAL_VF, &initial);
-	if (initial > iov->total ||
-	    (!(iov->cap & PCI_SRIOV_CAP_VFM) && (initial != iov->total)))
+	if (initial > iov->total_VFs ||
+	    (!(iov->cap & PCI_SRIOV_CAP_VFM) && (initial != iov->total_VFs)))
 		return -EIO;
 
-	if (nr_virtfn < 0 || nr_virtfn > iov->total ||
+	if (nr_virtfn < 0 || nr_virtfn > iov->total_VFs ||
 	    (!(iov->cap & PCI_SRIOV_CAP_VFM) && (nr_virtfn > initial)))
 		return -EINVAL;
 
@@ -359,7 +359,7 @@
 	msleep(100);
 	pci_cfg_access_unlock(dev);
 
-	iov->initial = initial;
+	iov->initial_VFs = initial;
 	if (nr_virtfn < initial)
 		initial = nr_virtfn;
 
@@ -376,7 +376,7 @@
 	}
 
 	kobject_uevent(&dev->dev.kobj, KOBJ_CHANGE);
-	iov->nr_virtfn = nr_virtfn;
+	iov->num_VFs = nr_virtfn;
 
 	return 0;
 
@@ -401,13 +401,13 @@
 	int i;
 	struct pci_sriov *iov = dev->sriov;
 
-	if (!iov->nr_virtfn)
+	if (!iov->num_VFs)
 		return;
 
 	if (iov->cap & PCI_SRIOV_CAP_VFM)
 		sriov_disable_migration(dev);
 
-	for (i = 0; i < iov->nr_virtfn; i++)
+	for (i = 0; i < iov->num_VFs; i++)
 		virtfn_remove(dev, i, 0);
 
 	iov->ctrl &= ~(PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE);
@@ -419,7 +419,7 @@
 	if (iov->link != dev->devfn)
 		sysfs_remove_link(&dev->dev.kobj, "dep_link");
 
-	iov->nr_virtfn = 0;
+	iov->num_VFs = 0;
 }
 
 static int sriov_init(struct pci_dev *dev, int pos)
@@ -496,7 +496,7 @@
 	iov->pos = pos;
 	iov->nres = nres;
 	iov->ctrl = ctrl;
-	iov->total = total;
+	iov->total_VFs = total;
 	iov->offset = offset;
 	iov->stride = stride;
 	iov->pgsz = pgsz;
@@ -529,7 +529,7 @@
 
 static void sriov_release(struct pci_dev *dev)
 {
-	BUG_ON(dev->sriov->nr_virtfn);
+	BUG_ON(dev->sriov->num_VFs);
 
 	if (dev != dev->sriov->dev)
 		pci_dev_put(dev->sriov->dev);
@@ -554,7 +554,7 @@
 		pci_update_resource(dev, i);
 
 	pci_write_config_dword(dev, iov->pos + PCI_SRIOV_SYS_PGSIZE, iov->pgsz);
-	pci_write_config_word(dev, iov->pos + PCI_SRIOV_NUM_VF, iov->nr_virtfn);
+	pci_write_config_word(dev, iov->pos + PCI_SRIOV_NUM_VF, iov->num_VFs);
 	pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl);
 	if (iov->ctrl & PCI_SRIOV_CTRL_VFE)
 		msleep(100);
@@ -661,7 +661,7 @@
 	list_for_each_entry(dev, &bus->devices, bus_list) {
 		if (!dev->is_physfn)
 			continue;
-		busnr = virtfn_bus(dev, dev->sriov->total - 1);
+		busnr = virtfn_bus(dev, dev->sriov->total_VFs - 1);
 		if (busnr > max)
 			max = busnr;
 	}
@@ -729,9 +729,56 @@
  */
 int pci_num_vf(struct pci_dev *dev)
 {
-	if (!dev || !dev->is_physfn)
+	if (!dev->is_physfn)
 		return 0;
-	else
-		return dev->sriov->nr_virtfn;
+
+	return dev->sriov->num_VFs;
 }
 EXPORT_SYMBOL_GPL(pci_num_vf);
+
+/**
+ * pci_sriov_set_totalvfs -- reduce the TotalVFs available
+ * @dev: the PCI PF device
+ * numvfs: number that should be used for TotalVFs supported
+ *
+ * Should be called from PF driver's probe routine with
+ * device's mutex held.
+ *
+ * Returns 0 if PF is an SRIOV-capable device and
+ * value of numvfs valid. If not a PF with VFS, return -EINVAL;
+ * if VFs already enabled, return -EBUSY.
+ */
+int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs)
+{
+	if (!dev->is_physfn || (numvfs > dev->sriov->total_VFs))
+		return -EINVAL;
+
+	/* Shouldn't change if VFs already enabled */
+	if (dev->sriov->ctrl & PCI_SRIOV_CTRL_VFE)
+		return -EBUSY;
+	else
+		dev->sriov->driver_max_VFs = numvfs;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(pci_sriov_set_totalvfs);
+
+/**
+ * pci_sriov_get_totalvfs -- get total VFs supported on this devic3
+ * @dev: the PCI PF device
+ *
+ * For a PCIe device with SRIOV support, return the PCIe
+ * SRIOV capability value of TotalVFs or the value of driver_max_VFs
+ * if the driver reduced it.  Otherwise, -EINVAL.
+ */
+int pci_sriov_get_totalvfs(struct pci_dev *dev)
+{
+	if (!dev->is_physfn)
+		return -EINVAL;
+
+	if (dev->sriov->driver_max_VFs)
+		return dev->sriov->driver_max_VFs;
+
+	return dev->sriov->total_VFs;
+}
+EXPORT_SYMBOL_GPL(pci_sriov_get_totalvfs);
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 11d9c8a..24aa44c 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -398,6 +398,8 @@
 	struct pci_dev *pci_dev = to_pci_dev(dev);
 	struct pci_driver *drv = pci_dev->driver;
 
+	pm_runtime_resume(dev);
+
 	if (drv && drv->shutdown)
 		drv->shutdown(pci_dev);
 	pci_msi_shutdown(pci_dev);
@@ -408,16 +410,6 @@
 	 * continue to do DMA
 	 */
 	pci_disable_device(pci_dev);
-
-	/*
-	 * Devices may be enabled to wake up by runtime PM, but they need not
-	 * be supposed to wake up the system from its "power off" state (e.g.
-	 * ACPI S5).  Therefore disable wakeup for all devices that aren't
-	 * supposed to wake up the system at this point.  The state argument
-	 * will be ignored by pci_enable_wake().
-	 */
-	if (!device_may_wakeup(dev))
-		pci_enable_wake(pci_dev, PCI_UNKNOWN, false);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 02d107b..5d883a1 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -404,6 +404,106 @@
 }
 #endif
 
+#ifdef CONFIG_PCI_IOV
+static ssize_t sriov_totalvfs_show(struct device *dev,
+				   struct device_attribute *attr,
+				   char *buf)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+
+	return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev));
+}
+
+
+static ssize_t sriov_numvfs_show(struct device *dev,
+				 struct device_attribute *attr,
+				 char *buf)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+
+	return sprintf(buf, "%u\n", pdev->sriov->num_VFs);
+}
+
+/*
+ * num_vfs > 0; number of vfs to enable
+ * num_vfs = 0; disable all vfs
+ *
+ * Note: SRIOV spec doesn't allow partial VF
+ *       disable, so its all or none.
+ */
+static ssize_t sriov_numvfs_store(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	int num_vfs_enabled = 0;
+	int num_vfs;
+	int ret = 0;
+	u16 total;
+
+	if (kstrtoint(buf, 0, &num_vfs) < 0)
+		return -EINVAL;
+
+	/* is PF driver loaded w/callback */
+	if (!pdev->driver || !pdev->driver->sriov_configure) {
+		dev_info(&pdev->dev,
+			 "Driver doesn't support SRIOV configuration via sysfs\n");
+		return -ENOSYS;
+	}
+
+	/* if enabling vf's ... */
+	total = pci_sriov_get_totalvfs(pdev);
+	/* Requested VFs to enable < totalvfs and none enabled already */
+	if ((num_vfs > 0) && (num_vfs <= total)) {
+		if (pdev->sriov->num_VFs == 0) {
+			num_vfs_enabled =
+				pdev->driver->sriov_configure(pdev, num_vfs);
+			if ((num_vfs_enabled >= 0) &&
+			    (num_vfs_enabled != num_vfs)) {
+				dev_warn(&pdev->dev,
+					 "Only %d VFs enabled\n",
+					 num_vfs_enabled);
+				return count;
+			} else if (num_vfs_enabled < 0)
+				/* error code from driver callback */
+				return num_vfs_enabled;
+		} else if (num_vfs == pdev->sriov->num_VFs) {
+			dev_warn(&pdev->dev,
+				 "%d VFs already enabled; no enable action taken\n",
+				 num_vfs);
+			return count;
+		} else {
+			dev_warn(&pdev->dev,
+				 "%d VFs already enabled. Disable before enabling %d VFs\n",
+				 pdev->sriov->num_VFs, num_vfs);
+			return -EINVAL;
+		}
+	}
+
+	/* disable vfs */
+	if (num_vfs == 0) {
+		if (pdev->sriov->num_VFs != 0) {
+			ret = pdev->driver->sriov_configure(pdev, 0);
+			return ret ? ret : count;
+		} else {
+			dev_warn(&pdev->dev,
+				 "All VFs disabled; no disable action taken\n");
+			return count;
+		}
+	}
+
+	dev_err(&pdev->dev,
+		"Invalid value for number of VFs to enable: %d\n", num_vfs);
+
+	return -EINVAL;
+}
+
+static struct device_attribute sriov_totalvfs_attr = __ATTR_RO(sriov_totalvfs);
+static struct device_attribute sriov_numvfs_attr =
+		__ATTR(sriov_numvfs, (S_IRUGO|S_IWUSR|S_IWGRP),
+		       sriov_numvfs_show, sriov_numvfs_store);
+#endif /* CONFIG_PCI_IOV */
+
 struct device_attribute pci_dev_attrs[] = {
 	__ATTR_RO(resource),
 	__ATTR_RO(vendor),
@@ -458,40 +558,6 @@
 }
 struct device_attribute vga_attr = __ATTR_RO(boot_vga);
 
-static void
-pci_config_pm_runtime_get(struct pci_dev *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct device *parent = dev->parent;
-
-	if (parent)
-		pm_runtime_get_sync(parent);
-	pm_runtime_get_noresume(dev);
-	/*
-	 * pdev->current_state is set to PCI_D3cold during suspending,
-	 * so wait until suspending completes
-	 */
-	pm_runtime_barrier(dev);
-	/*
-	 * Only need to resume devices in D3cold, because config
-	 * registers are still accessible for devices suspended but
-	 * not in D3cold.
-	 */
-	if (pdev->current_state == PCI_D3cold)
-		pm_runtime_resume(dev);
-}
-
-static void
-pci_config_pm_runtime_put(struct pci_dev *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct device *parent = dev->parent;
-
-	pm_runtime_put(dev);
-	if (parent)
-		pm_runtime_put_sync(parent);
-}
-
 static ssize_t
 pci_read_config(struct file *filp, struct kobject *kobj,
 		struct bin_attribute *bin_attr,
@@ -1303,29 +1369,20 @@
 		pdev->rom_attr = attr;
 	}
 
-	if ((pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA) {
-		retval = device_create_file(&pdev->dev, &vga_attr);
-		if (retval)
-			goto err_rom_file;
-	}
-
 	/* add platform-specific attributes */
 	retval = pcibios_add_platform_entries(pdev);
 	if (retval)
-		goto err_vga_file;
+		goto err_rom_file;
 
 	/* add sysfs entries for various capabilities */
 	retval = pci_create_capabilities_sysfs(pdev);
 	if (retval)
-		goto err_vga_file;
+		goto err_rom_file;
 
 	pci_create_firmware_label_files(pdev);
 
 	return 0;
 
-err_vga_file:
-	if ((pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA)
-		device_remove_file(&pdev->dev, &vga_attr);
 err_rom_file:
 	if (rom_size) {
 		sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
@@ -1411,3 +1468,62 @@
 }
 
 late_initcall(pci_sysfs_init);
+
+static struct attribute *pci_dev_dev_attrs[] = {
+	&vga_attr.attr,
+	NULL,
+};
+
+static umode_t pci_dev_attrs_are_visible(struct kobject *kobj,
+						struct attribute *a, int n)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct pci_dev *pdev = to_pci_dev(dev);
+
+	if (a == &vga_attr.attr)
+		if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
+			return 0;
+
+	return a->mode;
+}
+
+#ifdef CONFIG_PCI_IOV
+static struct attribute *sriov_dev_attrs[] = {
+	&sriov_totalvfs_attr.attr,
+	&sriov_numvfs_attr.attr,
+	NULL,
+};
+
+static umode_t sriov_attrs_are_visible(struct kobject *kobj,
+					 struct attribute *a, int n)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+
+	if (!dev_is_pf(dev))
+		return 0;
+
+	return a->mode;
+}
+
+static struct attribute_group sriov_dev_attr_group = {
+	.attrs = sriov_dev_attrs,
+	.is_visible = sriov_attrs_are_visible,
+};
+#endif /* CONFIG_PCI_IOV */
+
+static struct attribute_group pci_dev_attr_group = {
+	.attrs = pci_dev_dev_attrs,
+	.is_visible = pci_dev_attrs_are_visible,
+};
+
+static const struct attribute_group *pci_dev_attr_groups[] = {
+	&pci_dev_attr_group,
+#ifdef CONFIG_PCI_IOV
+	&sriov_dev_attr_group,
+#endif
+	NULL,
+};
+
+struct device_type pci_dev_type = {
+	.groups = pci_dev_attr_groups,
+};
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 485cfa9..adffc6f 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1868,6 +1868,38 @@
 }
 EXPORT_SYMBOL_GPL(pci_dev_run_wake);
 
+void pci_config_pm_runtime_get(struct pci_dev *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device *parent = dev->parent;
+
+	if (parent)
+		pm_runtime_get_sync(parent);
+	pm_runtime_get_noresume(dev);
+	/*
+	 * pdev->current_state is set to PCI_D3cold during suspending,
+	 * so wait until suspending completes
+	 */
+	pm_runtime_barrier(dev);
+	/*
+	 * Only need to resume devices in D3cold, because config
+	 * registers are still accessible for devices suspended but
+	 * not in D3cold.
+	 */
+	if (pdev->current_state == PCI_D3cold)
+		pm_runtime_resume(dev);
+}
+
+void pci_config_pm_runtime_put(struct pci_dev *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device *parent = dev->parent;
+
+	pm_runtime_put(dev);
+	if (parent)
+		pm_runtime_put_sync(parent);
+}
+
 /**
  * pci_pm_init - Initialize PM functions of given PCI device
  * @dev: PCI device to handle.
@@ -3843,14 +3875,13 @@
 }
 
 /**
- * pci_ext_cfg_enabled - can we access extended PCI config space?
- * @dev: The PCI device of the root bridge.
+ * pci_ext_cfg_avail - can we access extended PCI config space?
  *
  * Returns 1 if we can access PCI extended config space (offsets
  * greater than 0xff). This is the default implementation. Architecture
  * implementations can override this.
  */
-int __weak pci_ext_cfg_avail(struct pci_dev *dev)
+int __weak pci_ext_cfg_avail(void)
 {
 	return 1;
 }
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index bacbcba..11a713b 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -72,6 +72,8 @@
 extern int pci_finish_runtime_suspend(struct pci_dev *dev);
 extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
 extern void pci_wakeup_bus(struct pci_bus *bus);
+extern void pci_config_pm_runtime_get(struct pci_dev *dev);
+extern void pci_config_pm_runtime_put(struct pci_dev *dev);
 extern void pci_pm_init(struct pci_dev *dev);
 extern void platform_pci_wakeup_init(struct pci_dev *dev);
 extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
@@ -157,6 +159,7 @@
 }
 extern struct device_attribute pci_dev_attrs[];
 extern struct device_attribute pcibus_dev_attrs[];
+extern struct device_type pci_dev_type;
 #ifdef CONFIG_HOTPLUG
 extern struct bus_attribute pci_bus_attrs[];
 #else
@@ -232,13 +235,14 @@
 	int nres;		/* number of resources */
 	u32 cap;		/* SR-IOV Capabilities */
 	u16 ctrl;		/* SR-IOV Control */
-	u16 total;		/* total VFs associated with the PF */
-	u16 initial;		/* initial VFs associated with the PF */
-	u16 nr_virtfn;		/* number of VFs available */
+	u16 total_VFs;		/* total VFs associated with the PF */
+	u16 initial_VFs;	/* initial VFs associated with the PF */
+	u16 num_VFs;		/* number of VFs available */
 	u16 offset;		/* first VF Routing ID offset */
 	u16 stride;		/* following VF stride */
 	u32 pgsz;		/* page size for BAR alignment */
 	u8 link;		/* Function Dependency Link */
+	u16 driver_max_VFs;	/* max num VFs driver supports */
 	struct pci_dev *dev;	/* lowest numbered PF */
 	struct pci_dev *self;	/* this PF */
 	struct mutex lock;	/* lock for VF bus */
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index eb2f19a..421bbc5 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -213,6 +213,7 @@
 	struct aer_broadcast_data *result_data;
 	result_data = (struct aer_broadcast_data *) data;
 
+	device_lock(&dev->dev);
 	dev->error_state = result_data->state;
 
 	if (!dev->driver ||
@@ -252,6 +253,7 @@
 	}
 
 	result_data->result = merge_result(result_data->result, vote);
+	device_unlock(&dev->dev);
 	return 0;
 }
 
@@ -262,14 +264,17 @@
 	struct aer_broadcast_data *result_data;
 	result_data = (struct aer_broadcast_data *) data;
 
+	device_lock(&dev->dev);
 	if (!dev->driver ||
 		!dev->driver->err_handler ||
 		!dev->driver->err_handler->mmio_enabled)
-		return 0;
+		goto out;
 
 	err_handler = dev->driver->err_handler;
 	vote = err_handler->mmio_enabled(dev);
 	result_data->result = merge_result(result_data->result, vote);
+out:
+	device_unlock(&dev->dev);
 	return 0;
 }
 
@@ -280,14 +285,17 @@
 	struct aer_broadcast_data *result_data;
 	result_data = (struct aer_broadcast_data *) data;
 
+	device_lock(&dev->dev);
 	if (!dev->driver ||
 		!dev->driver->err_handler ||
 		!dev->driver->err_handler->slot_reset)
-		return 0;
+		goto out;
 
 	err_handler = dev->driver->err_handler;
 	vote = err_handler->slot_reset(dev);
 	result_data->result = merge_result(result_data->result, vote);
+out:
+	device_unlock(&dev->dev);
 	return 0;
 }
 
@@ -295,15 +303,18 @@
 {
 	const struct pci_error_handlers *err_handler;
 
+	device_lock(&dev->dev);
 	dev->error_state = pci_channel_io_normal;
 
 	if (!dev->driver ||
 		!dev->driver->err_handler ||
 		!dev->driver->err_handler->resume)
-		return 0;
+		goto out;
 
 	err_handler = dev->driver->err_handler;
 	err_handler->resume(dev);
+out:
+	device_unlock(&dev->dev);
 	return 0;
 }
 
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index d03a7a3..ed129b4 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -272,7 +272,8 @@
 	}
 
 	/* Hot-Plug Capable */
-	if (cap_mask & PCIE_PORT_SERVICE_HP) {
+	if ((cap_mask & PCIE_PORT_SERVICE_HP) &&
+	    dev->pcie_flags_reg & PCI_EXP_FLAGS_SLOT) {
 		pcie_capability_read_dword(dev, PCI_EXP_SLTCAP, &reg32);
 		if (reg32 & PCI_EXP_SLTCAP_HPC) {
 			services |= PCIE_PORT_SERVICE_HP;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index ec909af..293af5a 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -975,6 +975,7 @@
 	dev->sysdata = dev->bus->sysdata;
 	dev->dev.parent = dev->bus->bridge;
 	dev->dev.bus = &pci_bus_type;
+	dev->dev.type = &pci_dev_type;
 	dev->hdr_type = hdr_type & 0x7f;
 	dev->multifunction = !!(hdr_type & 0x80);
 	dev->error_state = pci_channel_io_normal;
@@ -1890,6 +1891,28 @@
 	return max;
 }
 
+/**
+ * pci_rescan_bus - scan a PCI bus for devices.
+ * @bus: PCI bus to scan
+ *
+ * Scan a PCI bus and child buses for new devices, adds them,
+ * and enables them.
+ *
+ * Returns the max number of subordinate bus discovered.
+ */
+unsigned int __ref pci_rescan_bus(struct pci_bus *bus)
+{
+	unsigned int max;
+
+	max = pci_scan_child_bus(bus);
+	pci_assign_unassigned_bus_resources(bus);
+	pci_enable_bridges(bus);
+	pci_bus_add_devices(bus);
+
+	return max;
+}
+EXPORT_SYMBOL_GPL(pci_rescan_bus);
+
 EXPORT_SYMBOL(pci_add_new_bus);
 EXPORT_SYMBOL(pci_scan_slot);
 EXPORT_SYMBOL(pci_scan_bridge);
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index eb907a8f..9b8505c 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -76,6 +76,8 @@
 	if (!access_ok(VERIFY_WRITE, buf, cnt))
 		return -EINVAL;
 
+	pci_config_pm_runtime_get(dev);
+
 	if ((pos & 1) && cnt) {
 		unsigned char val;
 		pci_user_read_config_byte(dev, pos, &val);
@@ -121,6 +123,8 @@
 		cnt--;
 	}
 
+	pci_config_pm_runtime_put(dev);
+
 	*ppos = pos;
 	return nbytes;
 }
@@ -146,6 +150,8 @@
 	if (!access_ok(VERIFY_READ, buf, cnt))
 		return -EINVAL;
 
+	pci_config_pm_runtime_get(dev);
+
 	if ((pos & 1) && cnt) {
 		unsigned char val;
 		__get_user(val, buf);
@@ -191,6 +197,8 @@
 		cnt--;
 	}
 
+	pci_config_pm_runtime_put(dev);
+
 	*ppos = pos;
 	i_size_write(ino, dp->size);
 	return nbytes;
diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index 513972f..7c0fd92 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -111,3 +111,39 @@
 	pci_remove_bus_device(dev);
 }
 EXPORT_SYMBOL(pci_stop_and_remove_bus_device);
+
+void pci_stop_root_bus(struct pci_bus *bus)
+{
+	struct pci_dev *child, *tmp;
+	struct pci_host_bridge *host_bridge;
+
+	if (!pci_is_root_bus(bus))
+		return;
+
+	host_bridge = to_pci_host_bridge(bus->bridge);
+	list_for_each_entry_safe_reverse(child, tmp,
+					 &bus->devices, bus_list)
+		pci_stop_bus_device(child);
+
+	/* stop the host bridge */
+	device_del(&host_bridge->dev);
+}
+
+void pci_remove_root_bus(struct pci_bus *bus)
+{
+	struct pci_dev *child, *tmp;
+	struct pci_host_bridge *host_bridge;
+
+	if (!pci_is_root_bus(bus))
+		return;
+
+	host_bridge = to_pci_host_bridge(bus->bridge);
+	list_for_each_entry_safe(child, tmp,
+				 &bus->devices, bus_list)
+		pci_remove_bus_device(child);
+	pci_remove_bus(bus);
+	host_bridge->bus = NULL;
+
+	/* remove the host bridge */
+	put_device(&host_bridge->dev);
+}
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 1e808ca..6d3591d 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -1550,25 +1550,12 @@
 }
 EXPORT_SYMBOL_GPL(pci_assign_unassigned_bridge_resources);
 
-#ifdef CONFIG_HOTPLUG
-/**
- * pci_rescan_bus - scan a PCI bus for devices.
- * @bus: PCI bus to scan
- *
- * Scan a PCI bus and child buses for new devices, adds them,
- * and enables them.
- *
- * Returns the max number of subordinate bus discovered.
- */
-unsigned int __ref pci_rescan_bus(struct pci_bus *bus)
+void pci_assign_unassigned_bus_resources(struct pci_bus *bus)
 {
-	unsigned int max;
 	struct pci_dev *dev;
 	LIST_HEAD(add_list); /* list of resources that
 					want additional resources */
 
-	max = pci_scan_child_bus(bus);
-
 	down_read(&pci_bus_sem);
 	list_for_each_entry(dev, &bus->devices, bus_list)
 		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
@@ -1579,11 +1566,4 @@
 	up_read(&pci_bus_sem);
 	__pci_bus_assign_resources(bus, &add_list, NULL);
 	BUG_ON(!list_empty(&add_list));
-
-	pci_enable_bridges(bus);
-	pci_bus_add_devices(bus);
-
-	return max;
 }
-EXPORT_SYMBOL_GPL(pci_rescan_bus);
-#endif
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index bb145e4..8b1d7a6 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -92,8 +92,8 @@
 
 /* ACPI PCI Interrupt Routing (pci_irq.c) */
 
-int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus);
-void acpi_pci_irq_del_prt(struct pci_bus *bus);
+int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus);
+void acpi_pci_irq_del_prt(int segment, int bus);
 
 /* ACPI PCI Device Binding (pci_bind.c) */
 
diff --git a/include/linux/pci.h b/include/linux/pci.h
index fb7e869..a98a5f9 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -576,6 +576,7 @@
 	int  (*resume_early) (struct pci_dev *dev);
 	int  (*resume) (struct pci_dev *dev);	                /* Device woken up */
 	void (*shutdown) (struct pci_dev *dev);
+	int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* PF pdev */
 	const struct pci_error_handlers *err_handler;
 	struct device_driver	driver;
 	struct pci_dynids dynids;
@@ -715,6 +716,8 @@
 extern void pci_dev_put(struct pci_dev *dev);
 extern void pci_remove_bus(struct pci_bus *b);
 extern void pci_stop_and_remove_bus_device(struct pci_dev *dev);
+void pci_stop_root_bus(struct pci_bus *bus);
+void pci_remove_root_bus(struct pci_bus *bus);
 void pci_setup_cardbus(struct pci_bus *bus);
 extern void pci_sort_breadthfirst(void);
 #define dev_is_pci(d) ((d)->bus == &pci_bus_type)
@@ -961,6 +964,7 @@
 int pci_claim_resource(struct pci_dev *, int);
 void pci_assign_unassigned_resources(void);
 void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge);
+void pci_assign_unassigned_bus_resources(struct pci_bus *bus);
 void pdev_enable_device(struct pci_dev *);
 int pci_enable_resources(struct pci_dev *, int mask);
 void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
@@ -1604,7 +1608,7 @@
 static inline void pci_mmcfg_late_init(void) { }
 #endif
 
-int pci_ext_cfg_avail(struct pci_dev *dev);
+int pci_ext_cfg_avail(void);
 
 void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
 
@@ -1613,6 +1617,8 @@
 extern void pci_disable_sriov(struct pci_dev *dev);
 extern irqreturn_t pci_sriov_migration(struct pci_dev *dev);
 extern int pci_num_vf(struct pci_dev *dev);
+extern int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs);
+extern int pci_sriov_get_totalvfs(struct pci_dev *dev);
 #else
 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
 {
@@ -1629,6 +1635,14 @@
 {
 	return 0;
 }
+static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs)
+{
+	return 0;
+}
+static inline int pci_sriov_get_totalvfs(struct pci_dev *dev)
+{
+	return 0;
+}
 #endif
 
 #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE)