25 files changed, 378 insertions, 198 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 192397c98606..0c01261fe5a8 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -12,6 +12,7 @@ struct pci_root_info {
        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;
@@ -22,6 +23,7 @@ struct pci_root_info {
 };
 static bool pci_use_crs = true;
+static bool pci_ignore_seg = false;
 static int __init set_use_crs(const struct dmi_system_id *id)
 {
@@ -35,7 +37,14 @@ static int __init set_nouse_crs(const struct dmi_system_id *id)
        return 0;
 }
-static const struct dmi_system_id pci_use_crs_table[] __initconst = {
+static int __init set_ignore_seg(const struct dmi_system_id *id)
+{
+        printk(KERN_INFO "PCI: %s detected: ignoring ACPI _SEG\n", id->ident);
+        pci_ignore_seg = true;
+        return 0;
+}
+static const struct dmi_system_id pci_crs_quirks[] __initconst = {
        /* http://bugzilla.kernel.org/show_bug.cgi?id=14183 */
        {
                .callback = set_use_crs,
@@ -98,6 +107,16 @@ static const struct dmi_system_id pci_use_crs_table[] __initconst = {
                        DMI_MATCH(DMI_BIOS_VERSION, "6JET85WW (1.43 )"),
                },
        },
+        /* https://bugzilla.kernel.org/show_bug.cgi?id=15362 */
+        {
+                .callback = set_ignore_seg,
+                .ident = "HP xw9300",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "HP xw9300 Workstation"),
+                },
+        },
        {}
 };
@@ -108,7 +127,7 @@ void __init pci_acpi_crs_quirks(void)
        if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008)
                pci_use_crs = false;
-        dmi_check_system(pci_use_crs_table);
+        dmi_check_system(pci_crs_quirks);
        /*
         * If the user specifies "pci=use_crs" or "pci=nocrs" explicitly, that
@@ -305,6 +324,7 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
        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,
@@ -374,7 +394,8 @@ static void add_resources(struct pci_root_info *info,
                                 "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]);
        }
 }
@@ -382,6 +403,8 @@ static void free_pci_root_info_res(struct pci_root_info *info)
 {
        kfree(info->res);
        info->res = NULL;
+        kfree(info->res_offset);
+        info->res_offset = NULL;
        info->res_num = 0;
 }
@@ -432,10 +455,20 @@ probe_pci_root_info(struct pci_root_info *info, struct acpi_device *device,
                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);
@@ -455,6 +488,9 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
        int pxm;
 #endif
+        if (pci_ignore_seg)
+                domain = 0;
        if (domain && !pci_domains_supported) {
                printk(KERN_WARNING "pci_bus %04x:%02x: "
                       "ignored (multiple domains not supported)\n",
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 720e973fc34a..52dbf1aeeb63 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -626,7 +626,7 @@ void pcibios_disable_device (struct pci_dev *dev)
                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 2ef04098cc1d..a1dee29beed3 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -45,11 +45,12 @@ static int acpi_pci_unbind(struct acpi_device *device)
        device_set_run_wake(&dev->dev, false);
        pci_acpi_remove_pm_notifier(device);
+        acpi_power_resource_unregister_device(&dev->dev, device->handle);
        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;
@@ -63,7 +64,7 @@ static int acpi_pci_bind(struct acpi_device *device)
 {
        acpi_status status;
        acpi_handle handle;
-        struct pci_bus *bus;
+        unsigned char bus;
        struct pci_dev *dev;
        dev = acpi_get_pci_dev(device->handle);
@@ -71,6 +72,7 @@ static int acpi_pci_bind(struct acpi_device *device)
                return 0;
        pci_acpi_add_pm_notifier(device, dev);
+        acpi_power_resource_register_device(&dev->dev, device->handle);
        if (device->wakeup.flags.run_wake)
                device_set_run_wake(&dev->dev, true);
@@ -100,11 +102,11 @@ static int acpi_pci_bind(struct acpi_device *device)
                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 0eefa12e648c..8835cc38aa30 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -184,7 +184,7 @@ static void do_prt_fixups(struct acpi_prt_entry *entry,
        }
 }
-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 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
         * 1=INTA, 2=INTB.  We use the PCI encoding throughout, so convert
         * it here.
         */
-        entry->id.segment = pci_domain_nr(bus);
+        entry->id.segment = segment;
-        entry->id.bus = bus->number;
+        entry->id.bus = bus;
        entry->id.device = (prt->address >> 16) & 0xFFFF;
        entry->pin = prt->pin + 1;
@@ -244,7 +244,7 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
        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 @@ int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
        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 @@ int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
        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
+                if (segment == entry->id.segment && bus == entry->id.bus) {
-                        && bus->number == entry->id.bus) {
                        list_del(&entry->list);
                        kfree(entry);
                }
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index bce469c0b48a..ab781f00e32d 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -454,6 +454,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
        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)
@@ -501,85 +502,47 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
        strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
        device->driver_data = root;
-        root->mcfg_addr = acpi_pci_root_get_mcfg_addr(device->handle);
-        /*
-         * All supported architectures that use ACPI have support for
-         * PCI domains, so we indicate this in _OSC support capabilities.
-         */
-        flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT;
-        acpi_pci_osc_support(root, flags);
-        /*
-         * TBD: Need PCI interface for enumeration/configuration of roots.
-         */
-        mutex_lock(&acpi_pci_root_lock);
-        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
-         * --------------------
-         * Must do this prior to any attempt to bind the root device, as the
-         * PCI namespace does not get created until this call is made (and 
-         * thus the root bridge's pci_dev does not exist).
-         */
-        root->bus = pci_acpi_scan_root(root);
-        if (!root->bus) {
-                printk(KERN_ERR PREFIX
-                            "Bus %04x:%02x not present in PCI namespace\n",
-                            root->segment, (unsigned int)root->secondary.start);
-                result = -ENODEV;
-                goto out_del_root;
-        }
-        /*
-         * Attach ACPI-PCI Context
-         * -----------------------
-         * Thus binding the ACPI and PCI devices.
-         */
-        result = acpi_pci_bind_root(device);
-        if (result)
-                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);
+                result = acpi_pci_irq_add_prt(device->handle, root->segment,
+                                              root->secondary.start);
+        root->mcfg_addr = acpi_pci_root_get_mcfg_addr(device->handle);
        /*
-         * Scan and bind all _ADR-Based Devices
+         * All supported architectures that use ACPI have support for
+         * PCI domains, so we indicate this in _OSC support capabilities.
         */
-        list_for_each_entry(child, &device->children, node)
+        flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT;
-                acpi_pci_bridge_scan(child);
+        acpi_pci_osc_support(root, flags);
        /* Indicate support for various _OSC capabilities. */
-        if (pci_ext_cfg_avail(root->bus->self))
+        if (pci_ext_cfg_avail())
                flags |= OSC_EXT_PCI_CONFIG_SUPPORT;
-        if (pcie_aspm_support_enabled())
+        if (pcie_aspm_support_enabled()) {
                flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
-                        OSC_CLOCK_PWR_CAPABILITY_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 "
+                        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
@@ -588,40 +551,81 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
                if (pci_aer_available()) {
                        if (aer_acpi_firmware_first())
-                                dev_dbg(root->bus->bridge,
+                                dev_dbg(&device->dev,
                                        "PCIe errors handled by BIOS.\n");
                        else
                                flags |= OSC_PCI_EXPRESS_AER_CONTROL;
                }
-                dev_info(root->bus->bridge,
+                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);
+                                       OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);
                if (ACPI_SUCCESS(status)) {
-                        dev_info(root->bus->bridge,
+                        is_osc_granted = true;
+                        dev_info(&device->dev,
                                "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,
+                        is_osc_granted = false;
+                        dev_info(&device->dev,
                                "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();
                }
        } else {
-                dev_info(root->bus->bridge,
+                dev_info(&device->dev,
-                         "Unable to request _OSC control "
+                        "Unable to request _OSC control "
-                         "(_OSC support mask: 0x%02x)\n", flags);
+                        "(_OSC support mask: 0x%02x)\n", flags);
+        }
+        /*
+         * TBD: Need PCI interface for enumeration/configuration of roots.
+         */
+        mutex_lock(&acpi_pci_root_lock);
+        list_add_tail(&root->node, &acpi_pci_roots);
+        mutex_unlock(&acpi_pci_root_lock);
+        /*
+         * Scan the Root Bridge
+         * --------------------
+         * Must do this prior to any attempt to bind the root device, as the
+         * PCI namespace does not get created until this call is made (and 
+         * thus the root bridge's pci_dev does not exist).
+         */
+        root->bus = pci_acpi_scan_root(root);
+        if (!root->bus) {
+                printk(KERN_ERR PREFIX
+                            "Bus %04x:%02x not present in PCI namespace\n",
+                            root->segment, (unsigned int)root->secondary.start);
+                result = -ENODEV;
+                goto out_del_root;
+        }
+        /*
+         * Attach ACPI-PCI Context
+         * -----------------------
+         * Thus binding the ACPI and PCI devices.
+         */
+        result = acpi_pci_bind_root(device);
+        if (result)
+                goto out_del_root;
+        /*
+         * Scan and bind all _ADR-Based Devices
+         */
+        list_for_each_entry(child, &device->children, node)
+                acpi_pci_bridge_scan(child);
+        /* ASPM setting */
+        if (is_osc_granted) {
+                if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM)
+                        pcie_clear_aspm(root->bus);
+        } else {
+                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 @@ out_del_root:
        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 @@ static int acpi_pci_root_start(struct acpi_device *device)
        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_start(struct acpi_device *device)
 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 6241fd05bd41..a543746fb354 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -320,10 +320,7 @@ void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *),
                } 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/ioapic.c b/drivers/pci/ioapic.c
index 205af8dc83c2..22436f74eb50 100644
--- a/drivers/pci/ioapic.c
+++ b/drivers/pci/ioapic.c
@@ -125,3 +125,5 @@ static void __exit ioapic_exit(void)
 module_init(ioapic_init);
 module_exit(ioapic_exit);
+MODULE_LICENSE("GPL");
diff --git a/drivers/pci/irq.c b/drivers/pci/irq.c
index e5f69a43b1b1..b008cf86b9c3 100644
--- a/drivers/pci/irq.c
+++ b/drivers/pci/irq.c
@@ -14,11 +14,11 @@ static void pci_note_irq_problem(struct pci_dev *pdev, const char *reason)
 {
        struct pci_dev *parent = to_pci_dev(pdev->dev.parent);
-        dev_printk(KERN_ERR, &pdev->dev,
+        dev_err(&pdev->dev,
-                   "Potentially misrouted IRQ (Bridge %s %04x:%04x)\n",
+                "Potentially misrouted IRQ (Bridge %s %04x:%04x)\n",
-                   dev_name(&parent->dev), parent->vendor, parent->device);
+                dev_name(&parent->dev), parent->vendor, parent->device);
-        dev_printk(KERN_ERR, &pdev->dev, "%s\n", reason);
+        dev_err(&pdev->dev, "%s\n", reason);
-        dev_printk(KERN_ERR, &pdev->dev, "Please report to linux-kernel@vger.kernel.org\n");
+        dev_err(&pdev->dev, "Please report to linux-kernel@vger.kernel.org\n");
        WARN_ON(1);
 }
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 94c6e2aa03d6..24aa44c6ed02 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -398,6 +398,8 @@ static void pci_device_shutdown(struct device *dev)
        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 @@ static void pci_device_shutdown(struct device *dev)
         * 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
@@ -1023,10 +1015,10 @@ static int pci_pm_runtime_suspend(struct device *dev)
                return 0;
        }
-        if (!pci_dev->state_saved)
+        if (!pci_dev->state_saved) {
                pci_save_state(pci_dev);
+                pci_finish_runtime_suspend(pci_dev);
-        pci_finish_runtime_suspend(pci_dev);
+        }
        return 0;
 }
diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c
index 775e933c2225..6e47c519c510 100644
--- a/drivers/pci/pci-stub.c
+++ b/drivers/pci/pci-stub.c
@@ -28,7 +28,7 @@ MODULE_PARM_DESC(ids, "Initial PCI IDs to add to the stub driver, format is "
 static int pci_stub_probe(struct pci_dev *dev, const struct pci_device_id *id)
 {
-        dev_printk(KERN_INFO, &dev->dev, "claimed by stub\n");
+        dev_info(&dev->dev, "claimed by stub\n");
        return 0;
 }
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 2f21991b8bcd..5d883a152789 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -558,40 +558,6 @@ boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf)
 }
 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,
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 54858838f098..adffc6f621e5 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1578,15 +1578,25 @@ void pci_pme_active(struct pci_dev *dev, bool enable)
        pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr);
-        /* PCI (as opposed to PCIe) PME requires that the device have
+        /*
-           its PME# line hooked up correctly. Not all hardware vendors
+         * PCI (as opposed to PCIe) PME requires that the device have
-           do this, so the PME never gets delivered and the device
+         * its PME# line hooked up correctly. Not all hardware vendors
-           remains asleep. The easiest way around this is to
+         * do this, so the PME never gets delivered and the device
-           periodically walk the list of suspended devices and check
+         * remains asleep. The easiest way around this is to
-           whether any have their PME flag set. The assumption is that
+         * periodically walk the list of suspended devices and check
-           we'll wake up often enough anyway that this won't be a huge
+         * whether any have their PME flag set. The assumption is that
-           hit, and the power savings from the devices will still be a
+         * we'll wake up often enough anyway that this won't be a huge
-           win. */
+         * hit, and the power savings from the devices will still be a
+         * win.
+         *
+         * Although PCIe uses in-band PME message instead of PME# line
+         * to report PME, PME does not work for some PCIe devices in
+         * reality.  For example, there are devices that set their PME
+         * status bits, but don't really bother to send a PME message;
+         * there are PCI Express Root Ports that don't bother to
+         * trigger interrupts when they receive PME messages from the
+         * devices below.  So PME poll is used for PCIe devices too.
+         */
        if (dev->pme_poll) {
                struct pci_pme_device *pme_dev;
@@ -1858,6 +1868,38 @@ bool pci_dev_run_wake(struct pci_dev *dev)
 }
 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.
@@ -3833,14 +3875,13 @@ static void __devinit pci_no_domains(void)
 }
 /**
- * pci_ext_cfg_enabled - can we access extended PCI config space?
+ * pci_ext_cfg_avail - can we access extended PCI config space?
- * @dev: The PCI device of the root bridge.
 *
 * 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 3c9443ee00e6..11a713bc7293 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -72,6 +72,8 @@ extern void pci_disable_enabled_device(struct pci_dev *dev);
 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);
diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
index 94a7598eb262..22f840f4dda1 100644
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ b/drivers/pci/pcie/aer/aerdrv.h
@@ -87,6 +87,9 @@ struct aer_broadcast_data {
 static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
                enum pci_ers_result new)
 {
+        if (new == PCI_ERS_RESULT_NO_AER_DRIVER)
+                return PCI_ERS_RESULT_NO_AER_DRIVER;
        if (new == PCI_ERS_RESULT_NONE)
                return orig;
@@ -97,7 +100,7 @@ static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
                break;
        case PCI_ERS_RESULT_DISCONNECT:
                if (new == PCI_ERS_RESULT_NEED_RESET)
-                        orig = new;
+                        orig = PCI_ERS_RESULT_NEED_RESET;
                break;
        default:
                break;
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index 06bad96af415..421bbc5fee32 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -213,6 +213,7 @@ static int report_error_detected(struct pci_dev *dev, void *data)
        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 ||
@@ -231,12 +232,28 @@ static int report_error_detected(struct pci_dev *dev, void *data)
                                   dev->driver ?
                                   "no AER-aware driver" : "no driver");
                }
-                return 0;
+                /*
+                 * If there's any device in the subtree that does not
+                 * have an error_detected callback, returning
+                 * PCI_ERS_RESULT_NO_AER_DRIVER prevents calling of
+                 * the subsequent mmio_enabled/slot_reset/resume
+                 * callbacks of "any" device in the subtree. All the
+                 * devices in the subtree are left in the error state
+                 * without recovery.
+                 */
+                if (!(dev->hdr_type & PCI_HEADER_TYPE_BRIDGE))
+                        vote = PCI_ERS_RESULT_NO_AER_DRIVER;
+                else
+                        vote = PCI_ERS_RESULT_NONE;
+        } else {
+                err_handler = dev->driver->err_handler;
+                vote = err_handler->error_detected(dev, result_data->state);
        }
-        err_handler = dev->driver->err_handler;
-        vote = err_handler->error_detected(dev, result_data->state);
        result_data->result = merge_result(result_data->result, vote);
+        device_unlock(&dev->dev);
        return 0;
 }
@@ -247,14 +264,17 @@ static int report_mmio_enabled(struct pci_dev *dev, void *data)
        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;
 }
@@ -265,14 +285,17 @@ static int report_slot_reset(struct pci_dev *dev, void *data)
        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;
 }
@@ -280,15 +303,18 @@ static int report_resume(struct pci_dev *dev, void *data)
 {
        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/aspm.c b/drivers/pci/pcie/aspm.c
index 213753b283a6..3da9ecc9ab84 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -242,8 +242,7 @@ static void pcie_aspm_configure_common_clock(struct pcie_link_state *link)
                return;
        /* Training failed. Restore common clock configurations */
-        dev_printk(KERN_ERR, &parent->dev,
+        dev_err(&parent->dev, "ASPM: Could not configure common clock\n");
-                   "ASPM: Could not configure common clock\n");
        list_for_each_entry(child, &linkbus->devices, bus_list)
                pcie_capability_write_word(child, PCI_EXP_LNKCTL,
                                           child_reg[PCI_FUNC(child->devfn)]);
@@ -507,9 +506,7 @@ static int pcie_aspm_sanity_check(struct pci_dev *pdev)
                 */
                pcie_capability_read_dword(child, PCI_EXP_DEVCAP, &reg32);
                if (!(reg32 & PCI_EXP_DEVCAP_RBER) && !aspm_force) {
-                        dev_printk(KERN_INFO, &child->dev, "disabling ASPM"
+                        dev_info(&child->dev, "disabling ASPM on pre-1.1 PCIe device.  You can enable it with 'pcie_aspm=force'\n");
-                                " on pre-1.1 PCIe device.  You can enable it"
-                                " with 'pcie_aspm=force'\n");
                        return -EINVAL;
                }
        }
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index d03a7a39b2d8..ed129b414624 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -272,7 +272,8 @@ static int get_port_device_capability(struct pci_dev *dev)
        }
        /* 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 0312f1c48b3c..293af5a6f912 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1891,6 +1891,28 @@ unsigned int __ref pci_rescan_bus_bridge_resize(struct pci_dev *bridge)
        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 eb907a8faf2a..9b8505ccc56d 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -76,6 +76,8 @@ proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *pp
        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 @@ proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *pp
                cnt--;
        }
+        pci_config_pm_runtime_put(dev);
        *ppos = pos;
        return nbytes;
 }
@@ -146,6 +150,8 @@ proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, lof
        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 @@ proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, lof
                cnt--;
        }
+        pci_config_pm_runtime_put(dev);
        *ppos = pos;
        i_size_write(ino, dp->size);
        return nbytes;
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 7a451ff56ecc..0c59f7aba12b 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1790,6 +1790,45 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
                         PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
                         quirk_tc86c001_ide);
+/*
+ * PLX PCI 9050 PCI Target bridge controller has an errata that prevents the
+ * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
+ * being read correctly if bit 7 of the base address is set.
+ * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
+ * Re-allocate the regions to a 256-byte boundary if necessary.
+ */
+static void __devinit quirk_plx_pci9050(struct pci_dev *dev)
+{
+        unsigned int bar;
+        /* Fixed in revision 2 (PCI 9052). */
+        if (dev->revision >= 2)
+                return;
+        for (bar = 0; bar <= 1; bar++)
+                if (pci_resource_len(dev, bar) == 0x80 &&
+                    (pci_resource_start(dev, bar) & 0x80)) {
+                        struct resource *r = &dev->resource[bar];
+                        dev_info(&dev->dev,
+                                 "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
+                                 bar);
+                        r->start = 0;
+                        r->end = 0xff;
+                }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+                         quirk_plx_pci9050);
+/*
+ * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
+ * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
+ * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
+ * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
+ *
+ * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
+ * driver.
+ */
+DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
+DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
 static void __devinit quirk_netmos(struct pci_dev *dev)
 {
        unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index 513972f3ed13..7c0fd9252e6f 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -111,3 +111,39 @@ void pci_stop_and_remove_bus_device(struct pci_dev *dev)
        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 1e808ca338f8..6d3591d57ea0 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -1550,25 +1550,12 @@ enable_all:
 }
 EXPORT_SYMBOL_GPL(pci_assign_unassigned_bridge_resources);
-#ifdef CONFIG_HOTPLUG
+void pci_assign_unassigned_bus_resources(struct pci_bus *bus)
-/**
- * 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;
        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 @@ unsigned int __ref pci_rescan_bus(struct pci_bus *bus)
        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 bb145e4b935e..8b1d7a6a9695 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -92,8 +92,8 @@ int acpi_pci_link_free_irq(acpi_handle handle);
 /* ACPI PCI Interrupt Routing (pci_irq.c) */
-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);
-void acpi_pci_irq_del_prt(struct pci_bus *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 1ad824966e64..a98a5f9ac1d5 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -538,6 +538,9 @@ enum pci_ers_result {
        /* Device driver is fully recovered and operational */
        PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
+        /* No AER capabilities registered for the driver */
+        PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6,
 };
 /* PCI bus error event callbacks */
@@ -713,6 +716,8 @@ extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
 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)
@@ -959,6 +964,7 @@ void pci_bus_size_bridges(struct pci_bus *bus);
 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 *),
@@ -1602,7 +1608,7 @@ static inline void pci_mmcfg_early_init(void) { }
 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);
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 20ae747ddf34..259763d2df71 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -544,9 +544,9 @@
 #define  PCI_EXP_OBFF_WAKE_EN   0x6000  /* OBFF using WAKE# signaling */
 #define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2  44      /* v2 endpoints end here */
 #define PCI_EXP_LNKCAP2         44      /* Link Capability 2 */
-#define  PCI_EXP_LNKCAP2_SLS_2_5GB 0x01 /* Current Link Speed 2.5GT/s */
+#define  PCI_EXP_LNKCAP2_SLS_2_5GB 0x02 /* Supported Link Speed 2.5GT/s */
-#define  PCI_EXP_LNKCAP2_SLS_5_0GB 0x02 /* Current Link Speed 5.0GT/s */
+#define  PCI_EXP_LNKCAP2_SLS_5_0GB 0x04 /* Supported Link Speed 5.0GT/s */
-#define  PCI_EXP_LNKCAP2_SLS_8_0GB 0x04 /* Current Link Speed 8.0GT/s */
+#define  PCI_EXP_LNKCAP2_SLS_8_0GB 0x08 /* Supported Link Speed 8.0GT/s */
 #define  PCI_EXP_LNKCAP2_CROSSLINK 0x100 /* Crosslink supported */
 #define PCI_EXP_LNKCTL2         48      /* Link Control 2 */
 #define PCI_EXP_LNKSTA2         50      /* Link Status 2 */