36 files changed, 591 insertions, 791 deletions

diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 8647dc6f52d0..748f8f3e9ff5 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -202,20 +202,16 @@ void pci_bus_add_devices(const struct pci_bus *bus)
                 if (dev->is_added)
                         continue;
                 retval = pci_bus_add_device(dev);
+                if (retval)
+                        dev_err(&dev->dev, "Error adding device (%d)\n",
+                                retval);
         }
 
         list_for_each_entry(dev, &bus->devices, bus_list) {
                 BUG_ON(!dev->is_added);
-
                 child = dev->subordinate;
-
-                if (!child)
-                        continue;
-                pci_bus_add_devices(child);
-
-                if (child->is_added)
-                        continue;
-                child->is_added = 1;
+                if (child)
+                        pci_bus_add_devices(child);
         }
 }
 
diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig
index 13e9e63a7266..9fcb87f353d4 100644
--- a/drivers/pci/hotplug/Kconfig
+++ b/drivers/pci/hotplug/Kconfig
@@ -52,15 +52,12 @@ config HOTPLUG_PCI_IBM
           When in doubt, say N.
 
 config HOTPLUG_PCI_ACPI
-        tristate "ACPI PCI Hotplug driver"
-        depends on (!ACPI_DOCK && ACPI) || (ACPI_DOCK)
+        bool "ACPI PCI Hotplug driver"
+        depends on HOTPLUG_PCI=y && ((!ACPI_DOCK && ACPI) || (ACPI_DOCK))
         help
           Say Y here if you have a system that supports PCI Hotplug using
           ACPI.
 
-          To compile this driver as a module, choose M here: the
-          module will be called acpiphp.
-
           When in doubt, say N.
 
 config HOTPLUG_PCI_ACPI_IBM
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h
index b70ac00a117e..6fdd49c6f0b9 100644
--- a/drivers/pci/hotplug/acpiphp.h
+++ b/drivers/pci/hotplug/acpiphp.h
@@ -73,8 +73,9 @@ static inline const char *slot_name(struct slot *slot)
  */
 struct acpiphp_bridge {
         struct list_head list;
+        struct list_head slots;
+        struct kref ref;
         acpi_handle handle;
-        struct acpiphp_slot *slots;
 
         /* Ejectable PCI-to-PCI bridge (PCI bridge and PCI function) */
         struct acpiphp_func *func;
@@ -97,7 +98,7 @@ struct acpiphp_bridge {
  * PCI slot information for each *physical* PCI slot
  */
 struct acpiphp_slot {
-        struct acpiphp_slot *next;
+        struct list_head node;
         struct acpiphp_bridge *bridge;  /* parent */
         struct list_head funcs;         /* one slot may have different
                                            objects (i.e. for each function) */
@@ -119,7 +120,6 @@ struct acpiphp_slot {
  */
 struct acpiphp_func {
         struct acpiphp_slot *slot;      /* parent */
-        struct acpiphp_bridge *bridge;  /* Ejectable PCI-to-PCI bridge */
 
         struct list_head sibling;
         struct notifier_block nb;
@@ -146,10 +146,6 @@ struct acpiphp_attention_info
 #define ACPI_PCI_HOST_HID               "PNP0A03"
 
 /* ACPI _STA method value (ignore bit 4; battery present) */
-#define ACPI_STA_PRESENT                (0x00000001)
-#define ACPI_STA_ENABLED                (0x00000002)
-#define ACPI_STA_SHOW_IN_UI             (0x00000004)
-#define ACPI_STA_FUNCTIONING            (0x00000008)
 #define ACPI_STA_ALL                    (0x0000000f)
 
 /* bridge flags */
@@ -174,25 +170,24 @@ struct acpiphp_attention_info
 /* function prototypes */
 
 /* acpiphp_core.c */
-extern int acpiphp_register_attention(struct acpiphp_attention_info*info);
-extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
-extern int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot);
-extern void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
+int acpiphp_register_attention(struct acpiphp_attention_info*info);
+int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
+int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot);
+void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
 
 /* acpiphp_glue.c */
-extern int acpiphp_glue_init (void);
-extern void acpiphp_glue_exit (void);
 typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
 
-extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
-extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
-extern int acpiphp_eject_slot (struct acpiphp_slot *slot);
-extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
-extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
-extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
-extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
+int acpiphp_enable_slot(struct acpiphp_slot *slot);
+int acpiphp_disable_slot(struct acpiphp_slot *slot);
+int acpiphp_eject_slot(struct acpiphp_slot *slot);
+u8 acpiphp_get_power_status(struct acpiphp_slot *slot);
+u8 acpiphp_get_attention_status(struct acpiphp_slot *slot);
+u8 acpiphp_get_latch_status(struct acpiphp_slot *slot);
+u8 acpiphp_get_adapter_status(struct acpiphp_slot *slot);
 
 /* variables */
 extern bool acpiphp_debug;
+extern bool acpiphp_disabled;
 
 #endif /* _ACPIPHP_H */
diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
index c2fd3095701f..ca8127950fcd 100644
--- a/drivers/pci/hotplug/acpiphp_core.c
+++ b/drivers/pci/hotplug/acpiphp_core.c
@@ -37,6 +37,7 @@
 
 #include <linux/kernel.h>
 #include <linux/pci.h>
+#include <linux/pci-acpi.h>
 #include <linux/pci_hotplug.h>
 #include <linux/slab.h>
 #include <linux/smp.h>
@@ -48,6 +49,7 @@
 #define SLOT_NAME_SIZE  21              /* {_SUN} */
 
 bool acpiphp_debug;
+bool acpiphp_disabled;
 
 /* local variables */
 static struct acpiphp_attention_info *attention_info;
@@ -60,7 +62,9 @@ MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
 MODULE_PARM_DESC(debug, "Debugging mode enabled or not");
+MODULE_PARM_DESC(disable, "disable acpiphp driver");
 module_param_named(debug, acpiphp_debug, bool, 0644);
+module_param_named(disable, acpiphp_disabled, bool, 0444);
 
 /* export the attention callback registration methods */
 EXPORT_SYMBOL_GPL(acpiphp_register_attention);
@@ -351,27 +355,9 @@ void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
 }
 
 
-static int __init acpiphp_init(void)
+void __init acpiphp_init(void)
 {
-        info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
-
-        if (acpi_pci_disabled)
-                return 0;
-
-        /* read all the ACPI info from the system */
-        /* initialize internal data structure etc. */
-        return acpiphp_glue_init();
-}
-
-
-static void __exit acpiphp_exit(void)
-{
-        if (acpi_pci_disabled)
-                return;
-
-        /* deallocate internal data structures etc. */
-        acpiphp_glue_exit();
+        info(DRIVER_DESC " version: " DRIVER_VERSION "%s\n",
+                acpiphp_disabled ? ", disabled by user; please report a bug"
+                                 : "");
 }
-
-module_init(acpiphp_init);
-module_exit(acpiphp_exit);
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 270fdbadc19c..96fed19c6d90 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -54,6 +54,7 @@
 #include "acpiphp.h"
 
 static LIST_HEAD(bridge_list);
+static DEFINE_MUTEX(bridge_mutex);
 
 #define MY_NAME "acpiphp_glue"
 
@@ -61,6 +62,7 @@ static void handle_hotplug_event_bridge (acpi_handle, u32, void *);
 static void acpiphp_sanitize_bus(struct pci_bus *bus);
 static void acpiphp_set_hpp_values(struct pci_bus *bus);
 static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context);
+static void free_bridge(struct kref *kref);
 
 /* callback routine to check for the existence of a pci dock device */
 static acpi_status
@@ -76,6 +78,39 @@ is_pci_dock_device(acpi_handle handle, u32 lvl, void *context, void **rv)
         }
 }
 
+static inline void get_bridge(struct acpiphp_bridge *bridge)
+{
+        kref_get(&bridge->ref);
+}
+
+static inline void put_bridge(struct acpiphp_bridge *bridge)
+{
+        kref_put(&bridge->ref, free_bridge);
+}
+
+static void free_bridge(struct kref *kref)
+{
+        struct acpiphp_bridge *bridge;
+        struct acpiphp_slot *slot, *next;
+        struct acpiphp_func *func, *tmp;
+
+        bridge = container_of(kref, struct acpiphp_bridge, ref);
+
+        list_for_each_entry_safe(slot, next, &bridge->slots, node) {
+                list_for_each_entry_safe(func, tmp, &slot->funcs, sibling) {
+                        kfree(func);
+                }
+                kfree(slot);
+        }
+
+        /* Release reference acquired by acpiphp_bridge_handle_to_function() */
+        if ((bridge->flags & BRIDGE_HAS_EJ0) && bridge->func)
+                put_bridge(bridge->func->slot->bridge);
+        put_device(&bridge->pci_bus->dev);
+        pci_dev_put(bridge->pci_dev);
+        kfree(bridge);
+}
+
 /*
  * the _DCK method can do funny things... and sometimes not
  * hah-hah funny.
@@ -154,9 +189,10 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
         acpi_handle tmp;
         acpi_status status = AE_OK;
         unsigned long long adr, sun;
-        int device, function, retval;
+        int device, function, retval, found = 0;
         struct pci_bus *pbus = bridge->pci_bus;
         struct pci_dev *pdev;
+        u32 val;
 
         if (!acpi_pci_check_ejectable(pbus, handle) && !is_dock_device(handle))
                 return AE_OK;
@@ -170,7 +206,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
         device = (adr >> 16) & 0xffff;
         function = adr & 0xffff;
 
-        pdev = pbus->self;
+        pdev = bridge->pci_dev;
         if (pdev && device_is_managed_by_native_pciehp(pdev))
                 return AE_OK;
 
@@ -178,7 +214,6 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
         if (!newfunc)
                 return AE_NO_MEMORY;
 
-        INIT_LIST_HEAD(&newfunc->sibling);
         newfunc->handle = handle;
         newfunc->function = function;
 
@@ -207,14 +242,15 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
         }
 
         /* search for objects that share the same slot */
-        for (slot = bridge->slots; slot; slot = slot->next)
+        list_for_each_entry(slot, &bridge->slots, node)
                 if (slot->device == device) {
                         if (slot->sun != sun)
                                 warn("sibling found, but _SUN doesn't match!\n");
+                        found = 1;
                         break;
                 }
 
-        if (!slot) {
+        if (!found) {
                 slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);
                 if (!slot) {
                         kfree(newfunc);
@@ -227,9 +263,9 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
                 INIT_LIST_HEAD(&slot->funcs);
                 mutex_init(&slot->crit_sect);
 
-                slot->next = bridge->slots;
-                bridge->slots = slot;
-
+                mutex_lock(&bridge_mutex);
+                list_add_tail(&slot->node, &bridge->slots);
+                mutex_unlock(&bridge_mutex);
                 bridge->nr_slots++;
 
                 dbg("found ACPI PCI Hotplug slot %llu at PCI %04x:%02x:%02x\n",
@@ -247,13 +283,13 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
         }
 
         newfunc->slot = slot;
+        mutex_lock(&bridge_mutex);
         list_add_tail(&newfunc->sibling, &slot->funcs);
+        mutex_unlock(&bridge_mutex);
 
-        pdev = pci_get_slot(pbus, PCI_DEVFN(device, function));
-        if (pdev) {
+        if (pci_bus_read_dev_vendor_id(pbus, PCI_DEVFN(device, function),
+                                       &val, 60*1000))
                 slot->flags |= (SLOT_ENABLED | SLOT_POWEREDON);
-                pci_dev_put(pdev);
-        }
 
         if (is_dock_device(handle)) {
                 /* we don't want to call this device's _EJ0
@@ -290,7 +326,9 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 
  err_exit:
         bridge->nr_slots--;
-        bridge->slots = slot->next;
+        mutex_lock(&bridge_mutex);
+        list_del(&slot->node);
+        mutex_unlock(&bridge_mutex);
         kfree(slot);
         kfree(newfunc);
 
@@ -315,13 +353,17 @@ static void init_bridge_misc(struct acpiphp_bridge *bridge)
         acpi_status status;
 
         /* must be added to the list prior to calling register_slot */
+        mutex_lock(&bridge_mutex);
         list_add(&bridge->list, &bridge_list);
+        mutex_unlock(&bridge_mutex);
 
         /* register all slot objects under this bridge */
         status = acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge->handle, (u32)1,
                                      register_slot, NULL, bridge, NULL);
         if (ACPI_FAILURE(status)) {
+                mutex_lock(&bridge_mutex);
                 list_del(&bridge->list);
+                mutex_unlock(&bridge_mutex);
                 return;
         }
 
@@ -351,178 +393,46 @@ static struct acpiphp_func *acpiphp_bridge_handle_to_function(acpi_handle handle
 {
         struct acpiphp_bridge *bridge;
         struct acpiphp_slot *slot;
-        struct acpiphp_func *func;
+        struct acpiphp_func *func = NULL;
 
+        mutex_lock(&bridge_mutex);
         list_for_each_entry(bridge, &bridge_list, list) {
-                for (slot = bridge->slots; slot; slot = slot->next) {
+                list_for_each_entry(slot, &bridge->slots, node) {
                         list_for_each_entry(func, &slot->funcs, sibling) {
-                                if (func->handle == handle)
+                                if (func->handle == handle) {
+                                        get_bridge(func->slot->bridge);
+                                        mutex_unlock(&bridge_mutex);
                                         return func;
+                                }
                         }
                 }
         }
+        mutex_unlock(&bridge_mutex);
 
         return NULL;
 }
 
 
-static inline void config_p2p_bridge_flags(struct acpiphp_bridge *bridge)
-{
-        acpi_handle dummy_handle;
-        struct acpiphp_func *func;
-
-        if (ACPI_SUCCESS(acpi_get_handle(bridge->handle,
-                                        "_EJ0", &dummy_handle))) {
-                bridge->flags |= BRIDGE_HAS_EJ0;
-
-                dbg("found ejectable p2p bridge\n");
-
-                /* make link between PCI bridge and PCI function */
-                func = acpiphp_bridge_handle_to_function(bridge->handle);
-                if (!func)
-                        return;
-                bridge->func = func;
-                func->bridge = bridge;
-        }
-}
-
-
-/* allocate and initialize host bridge data structure */
-static void add_host_bridge(struct acpi_pci_root *root)
-{
-        struct acpiphp_bridge *bridge;
-        acpi_handle handle = root->device->handle;
-
-        bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
-        if (bridge == NULL)
-                return;
-
-        bridge->handle = handle;
-
-        bridge->pci_bus = root->bus;
-
-        init_bridge_misc(bridge);
-}
-
-
-/* allocate and initialize PCI-to-PCI bridge data structure */
-static void add_p2p_bridge(acpi_handle *handle)
-{
-        struct acpiphp_bridge *bridge;
-
-        bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
-        if (bridge == NULL) {
-                err("out of memory\n");
-                return;
-        }
-
-        bridge->handle = handle;
-        config_p2p_bridge_flags(bridge);
-
-        bridge->pci_dev = acpi_get_pci_dev(handle);
-        bridge->pci_bus = bridge->pci_dev->subordinate;
-        if (!bridge->pci_bus) {
-                err("This is not a PCI-to-PCI bridge!\n");
-                goto err;
-        }
-
-        /*
-         * Grab a ref to the subordinate PCI bus in case the bus is
-         * removed via PCI core logical hotplug. The ref pins the bus
-         * (which we access during module unload).
-         */
-        get_device(&bridge->pci_bus->dev);
-
-        init_bridge_misc(bridge);
-        return;
- err:
-        pci_dev_put(bridge->pci_dev);
-        kfree(bridge);
-        return;
-}
-
-
-/* callback routine to find P2P bridges */
-static acpi_status
-find_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv)
-{
-        acpi_status status;
-        struct pci_dev *dev;
-
-        dev = acpi_get_pci_dev(handle);
-        if (!dev || !dev->subordinate)
-                goto out;
-
-        /* check if this bridge has ejectable slots */
-        if ((detect_ejectable_slots(handle) > 0)) {
-                dbg("found PCI-to-PCI bridge at PCI %s\n", pci_name(dev));
-                add_p2p_bridge(handle);
-        }
-
-        /* search P2P bridges under this p2p bridge */
-        status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
-                                     find_p2p_bridge, NULL, NULL, NULL);
-        if (ACPI_FAILURE(status))
-                warn("find_p2p_bridge failed (error code = 0x%x)\n", status);
-
- out:
-        pci_dev_put(dev);
-        return AE_OK;
-}
-
-
-/* find hot-pluggable slots, and then find P2P bridge */
-static int add_bridge(struct acpi_pci_root *root)
-{
-        acpi_status status;
-        unsigned long long tmp;
-        acpi_handle dummy_handle;
-        acpi_handle handle = root->device->handle;
-
-        /* if the bridge doesn't have _STA, we assume it is always there */
-        status = acpi_get_handle(handle, "_STA", &dummy_handle);
-        if (ACPI_SUCCESS(status)) {
-                status = acpi_evaluate_integer(handle, "_STA", NULL, &tmp);
-                if (ACPI_FAILURE(status)) {
-                        dbg("%s: _STA evaluation failure\n", __func__);
-                        return 0;
-                }
-                if ((tmp & ACPI_STA_FUNCTIONING) == 0)
-                        /* don't register this object */
-                        return 0;
-        }
-
-        /* check if this bridge has ejectable slots */
-        if (detect_ejectable_slots(handle) > 0) {
-                dbg("found PCI host-bus bridge with hot-pluggable slots\n");
-                add_host_bridge(root);
-        }
-
-        /* search P2P bridges under this host bridge */
-        status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
-                                     find_p2p_bridge, NULL, NULL, NULL);
-
-        if (ACPI_FAILURE(status))
-                warn("find_p2p_bridge failed (error code = 0x%x)\n", status);
-
-        return 0;
-}
-
 static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle)
 {
         struct acpiphp_bridge *bridge;
 
+        mutex_lock(&bridge_mutex);
         list_for_each_entry(bridge, &bridge_list, list)
-                if (bridge->handle == handle)
+                if (bridge->handle == handle) {
+                        get_bridge(bridge);
+                        mutex_unlock(&bridge_mutex);
                         return bridge;
+                }
+        mutex_unlock(&bridge_mutex);
 
         return NULL;
 }
 
 static void cleanup_bridge(struct acpiphp_bridge *bridge)
 {
-        struct acpiphp_slot *slot, *next;
-        struct acpiphp_func *func, *tmp;
+        struct acpiphp_slot *slot;
+        struct acpiphp_func *func;
         acpi_status status;
         acpi_handle handle = bridge->handle;
 
@@ -543,10 +453,8 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
                         err("failed to install interrupt notify handler\n");
         }
 
-        slot = bridge->slots;
-        while (slot) {
-                next = slot->next;
-                list_for_each_entry_safe(func, tmp, &slot->funcs, sibling) {
+        list_for_each_entry(slot, &bridge->slots, node) {
+                list_for_each_entry(func, &slot->funcs, sibling) {
                         if (is_dock_device(func->handle)) {
                                 unregister_hotplug_dock_device(func->handle);
                                 unregister_dock_notifier(&func->nb);
@@ -558,63 +466,13 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
                                 if (ACPI_FAILURE(status))
                                         err("failed to remove notify handler\n");
                         }
-                        list_del(&func->sibling);
-                        kfree(func);
                 }
                 acpiphp_unregister_hotplug_slot(slot);
-                list_del(&slot->funcs);
-                kfree(slot);
-                slot = next;
         }
 
-        /*
-         * Only P2P bridges have a pci_dev
-         */
-        if (bridge->pci_dev)
-                put_device(&bridge->pci_bus->dev);
-
-        pci_dev_put(bridge->pci_dev);
+        mutex_lock(&bridge_mutex);
         list_del(&bridge->list);
-        kfree(bridge);
-}
-
-static acpi_status
-cleanup_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv)
-{
-        struct acpiphp_bridge *bridge;
-
-        /* cleanup p2p bridges under this P2P bridge
-           in a depth-first manner */
-        acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
-                                cleanup_p2p_bridge, NULL, NULL, NULL);
-
-        bridge = acpiphp_handle_to_bridge(handle);
-        if (bridge)
-                cleanup_bridge(bridge);
-
-        return AE_OK;
-}
-
-static void remove_bridge(struct acpi_pci_root *root)
-{
-        struct acpiphp_bridge *bridge;
-        acpi_handle handle = root->device->handle;
-
-        /* cleanup p2p bridges under this host bridge
-           in a depth-first manner */
-        acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
-                                (u32)1, cleanup_p2p_bridge, NULL, NULL, NULL);
-
-        /*
-         * On root bridges with hotplug slots directly underneath (ie,
-         * no p2p bridge between), we call cleanup_bridge(). 
-         *
-         * The else clause cleans up root bridges that either had no
-         * hotplug slots at all, or had a p2p bridge underneath.
-         */
-        bridge = acpiphp_handle_to_bridge(handle);
-        if (bridge)
-                cleanup_bridge(bridge);
+        mutex_unlock(&bridge_mutex);
 }
 
 static int power_on_slot(struct acpiphp_slot *slot)
@@ -798,6 +656,7 @@ static void check_hotplug_bridge(struct acpiphp_slot *slot, struct pci_dev *dev)
                 }
         }
 }
+
 /**
  * enable_device - enable, configure a slot
  * @slot: slot to be enabled
@@ -810,9 +669,7 @@ static int __ref enable_device(struct acpiphp_slot *slot)
         struct pci_dev *dev;
         struct pci_bus *bus = slot->bridge->pci_bus;
         struct acpiphp_func *func;
-        int retval = 0;
         int num, max, pass;
-        acpi_status status;
 
         if (slot->flags & SLOT_ENABLED)
                 goto err_exit;
@@ -867,23 +724,11 @@ static int __ref enable_device(struct acpiphp_slot *slot)
                         slot->flags &= (~SLOT_ENABLED);
                         continue;
                 }
-
-                if (dev->hdr_type != PCI_HEADER_TYPE_BRIDGE &&
-                    dev->hdr_type != PCI_HEADER_TYPE_CARDBUS) {
-                        pci_dev_put(dev);
-                        continue;
-                }
-
-                status = find_p2p_bridge(func->handle, (u32)1, bus, NULL);
-                if (ACPI_FAILURE(status))
-                        warn("find_p2p_bridge failed (error code = 0x%x)\n",
-                                status);
-                pci_dev_put(dev);
         }
 
 
  err_exit:
-        return retval;
+        return 0;
 }
 
 /* return first device in slot, acquiring a reference on it */
@@ -912,23 +757,6 @@ static int disable_device(struct acpiphp_slot *slot)
 {
         struct acpiphp_func *func;
         struct pci_dev *pdev;
-        struct pci_bus *bus = slot->bridge->pci_bus;
-
-        /* The slot will be enabled when func 0 is added, so check
-           func 0 before disable the slot. */
-        pdev = pci_get_slot(bus, PCI_DEVFN(slot->device, 0));
-        if (!pdev)
-                goto err_exit;
-        pci_dev_put(pdev);
-
-        list_for_each_entry(func, &slot->funcs, sibling) {
-                if (func->bridge) {
-                        /* cleanup p2p bridges under this P2P bridge */
-                        cleanup_p2p_bridge(func->bridge->handle,
-                                                (u32)1, NULL, NULL);
-                        func->bridge = NULL;
-                }
-        }
 
         /*
          * enable_device() enumerates all functions in this device via
@@ -947,7 +775,6 @@ static int disable_device(struct acpiphp_slot *slot)
 
         slot->flags &= (~SLOT_ENABLED);
 
-err_exit:
         return 0;
 }
 
@@ -1037,7 +864,7 @@ static int acpiphp_check_bridge(struct acpiphp_bridge *bridge)
 
         enabled = disabled = 0;
 
-        for (slot = bridge->slots; slot; slot = slot->next) {
+        list_for_each_entry(slot, &bridge->slots, node) {
                 unsigned int status = get_slot_status(slot);
                 if (slot->flags & SLOT_ENABLED) {
                         if (status == ACPI_STA_ALL)
@@ -1082,11 +909,11 @@ static void acpiphp_set_hpp_values(struct pci_bus *bus)
  */
 static void acpiphp_sanitize_bus(struct pci_bus *bus)
 {
-        struct pci_dev *dev;
+        struct pci_dev *dev, *tmp;
         int i;
         unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM;
 
-        list_for_each_entry(dev, &bus->devices, bus_list) {
+        list_for_each_entry_safe(dev, tmp, &bus->devices, bus_list) {
                 for (i=0; i<PCI_BRIDGE_RESOURCES; i++) {
                         struct resource *res = &dev->resource[i];
                         if ((res->flags & type_mask) && !res->start &&
@@ -1118,6 +945,7 @@ check_sub_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
                 dbg("%s: re-enumerating slots under %s\n",
                         __func__, objname);
                 acpiphp_check_bridge(bridge);
+                put_bridge(bridge);
         }
         return AE_OK ;
 }
@@ -1195,6 +1023,7 @@ static void _handle_hotplug_event_bridge(struct work_struct *work)
 
         acpi_scan_lock_release();
         kfree(hp_work); /* allocated in handle_hotplug_event_bridge */
+        put_bridge(bridge);
 }
 
 /**
@@ -1208,6 +1037,8 @@ static void _handle_hotplug_event_bridge(struct work_struct *work)
 static void handle_hotplug_event_bridge(acpi_handle handle, u32 type,
                                         void *context)
 {
+        struct acpiphp_bridge *bridge = context;
+
         /*
          * Currently the code adds all hotplug events to the kacpid_wq
          * queue when it should add hotplug events to the kacpi_hotplug_wq.
@@ -1216,6 +1047,7 @@ static void handle_hotplug_event_bridge(acpi_handle handle, u32 type,
          * For now just re-add this work to the kacpi_hotplug_wq so we
          * don't deadlock on hotplug actions.
          */
+        get_bridge(bridge);
         alloc_acpi_hp_work(handle, type, context, _handle_hotplug_event_bridge);
 }
 
@@ -1270,6 +1102,7 @@ static void _handle_hotplug_event_func(struct work_struct *work)
 
         acpi_scan_lock_release();
         kfree(hp_work); /* allocated in handle_hotplug_event_func */
+        put_bridge(func->slot->bridge);
 }
 
 /**
@@ -1283,6 +1116,8 @@ static void _handle_hotplug_event_func(struct work_struct *work)
 static void handle_hotplug_event_func(acpi_handle handle, u32 type,
                                       void *context)
 {
+        struct acpiphp_func *func = context;
+
         /*
          * Currently the code adds all hotplug events to the kacpid_wq
          * queue when it should add hotplug events to the kacpi_hotplug_wq.
@@ -1291,33 +1126,69 @@ static void handle_hotplug_event_func(acpi_handle handle, u32 type,
          * For now just re-add this work to the kacpi_hotplug_wq so we
          * don't deadlock on hotplug actions.
          */
+        get_bridge(func->slot->bridge);
         alloc_acpi_hp_work(handle, type, context, _handle_hotplug_event_func);
 }
 
-static struct acpi_pci_driver acpi_pci_hp_driver = {
-        .add =          add_bridge,
-        .remove =       remove_bridge,
-};
-
-/**
- * acpiphp_glue_init - initializes all PCI hotplug - ACPI glue data structures
+/*
+ * Create hotplug slots for the PCI bus.
+ * It should always return 0 to avoid skipping following notifiers.
  */
-int __init acpiphp_glue_init(void)
+void acpiphp_enumerate_slots(struct pci_bus *bus, acpi_handle handle)
 {
-        acpi_pci_register_driver(&acpi_pci_hp_driver);
+        acpi_handle dummy_handle;
+        struct acpiphp_bridge *bridge;
 
-        return 0;
-}
+        if (acpiphp_disabled)
+                return;
 
+        if (detect_ejectable_slots(handle) <= 0)
+                return;
 
-/**
- * acpiphp_glue_exit - terminates all PCI hotplug - ACPI glue data structures
- *
- * This function frees all data allocated in acpiphp_glue_init().
- */
-void  acpiphp_glue_exit(void)
+        bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
+        if (bridge == NULL) {
+                err("out of memory\n");
+                return;
+        }
+
+        INIT_LIST_HEAD(&bridge->slots);
+        kref_init(&bridge->ref);
+        bridge->handle = handle;
+        bridge->pci_dev = pci_dev_get(bus->self);
+        bridge->pci_bus = bus;
+
+        /*
+         * Grab a ref to the subordinate PCI bus in case the bus is
+         * removed via PCI core logical hotplug. The ref pins the bus
+         * (which we access during module unload).
+         */
+        get_device(&bus->dev);
+
+        if (!pci_is_root_bus(bridge->pci_bus) &&
+            ACPI_SUCCESS(acpi_get_handle(bridge->handle,
+                                        "_EJ0", &dummy_handle))) {
+                dbg("found ejectable p2p bridge\n");
+                bridge->flags |= BRIDGE_HAS_EJ0;
+                bridge->func = acpiphp_bridge_handle_to_function(handle);
+        }
+
+        init_bridge_misc(bridge);
+}
+
+/* Destroy hotplug slots associated with the PCI bus */
+void acpiphp_remove_slots(struct pci_bus *bus)
 {
-        acpi_pci_unregister_driver(&acpi_pci_hp_driver);
+        struct acpiphp_bridge *bridge, *tmp;
+
+        if (acpiphp_disabled)
+                return;
+
+        list_for_each_entry_safe(bridge, tmp, &bridge_list, list)
+                if (bridge->pci_bus == bus) {
+                        cleanup_bridge(bridge);
+                        put_bridge(bridge);
+                        break;
+                }
 }
 
 /**
@@ -1396,7 +1267,7 @@ u8 acpiphp_get_latch_status(struct acpiphp_slot *slot)
 
         sta = get_slot_status(slot);
 
-        return (sta & ACPI_STA_SHOW_IN_UI) ? 0 : 1;
+        return (sta & ACPI_STA_DEVICE_UI) ? 0 : 1;
 }
 
 
diff --git a/drivers/pci/hotplug/cpci_hotplug.h b/drivers/pci/hotplug/cpci_hotplug.h
index 9fff878cf026..1356211431d0 100644
--- a/drivers/pci/hotplug/cpci_hotplug.h
+++ b/drivers/pci/hotplug/cpci_hotplug.h
@@ -75,28 +75,36 @@ static inline const char *slot_name(struct slot *slot)
         return hotplug_slot_name(slot->hotplug_slot);
 }
 
-extern int cpci_hp_register_controller(struct cpci_hp_controller *controller);
-extern int cpci_hp_unregister_controller(struct cpci_hp_controller *controller);
-extern int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last);
-extern int cpci_hp_unregister_bus(struct pci_bus *bus);
-extern int cpci_hp_start(void);
-extern int cpci_hp_stop(void);
+int cpci_hp_register_controller(struct cpci_hp_controller *controller);
+int cpci_hp_unregister_controller(struct cpci_hp_controller *controller);
+int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last);
+int cpci_hp_unregister_bus(struct pci_bus *bus);
+int cpci_hp_start(void);
+int cpci_hp_stop(void);
 
 /*
  * Internal function prototypes, these functions should not be used by
  * board/chassis drivers.
  */
-extern u8 cpci_get_attention_status(struct slot *slot);
-extern u8 cpci_get_latch_status(struct slot *slot);
-extern u8 cpci_get_adapter_status(struct slot *slot);
-extern u16 cpci_get_hs_csr(struct slot * slot);
-extern int cpci_set_attention_status(struct slot *slot, int status);
-extern int cpci_check_and_clear_ins(struct slot * slot);
-extern int cpci_check_ext(struct slot * slot);
-extern int cpci_clear_ext(struct slot * slot);
-extern int cpci_led_on(struct slot * slot);
-extern int cpci_led_off(struct slot * slot);
-extern int cpci_configure_slot(struct slot *slot);
-extern int cpci_unconfigure_slot(struct slot *slot);
+u8 cpci_get_attention_status(struct slot *slot);
+u8 cpci_get_latch_status(struct slot *slot);
+u8 cpci_get_adapter_status(struct slot *slot);
+u16 cpci_get_hs_csr(struct slot * slot);
+int cpci_set_attention_status(struct slot *slot, int status);
+int cpci_check_and_clear_ins(struct slot * slot);
+int cpci_check_ext(struct slot * slot);
+int cpci_clear_ext(struct slot * slot);
+int cpci_led_on(struct slot * slot);
+int cpci_led_off(struct slot * slot);
+int cpci_configure_slot(struct slot *slot);
+int cpci_unconfigure_slot(struct slot *slot);
+
+#ifdef CONFIG_HOTPLUG_PCI_CPCI
+int cpci_hotplug_init(int debug);
+void cpci_hotplug_exit(void);
+#else
+static inline int cpci_hotplug_init(int debug) { return 0; }
+static inline void cpci_hotplug_exit(void) { }
+#endif
 
 #endif  /* _CPCI_HOTPLUG_H */
diff --git a/drivers/pci/hotplug/cpqphp.h b/drivers/pci/hotplug/cpqphp.h
index d8ffc7366801..516b87738b6e 100644
--- a/drivers/pci/hotplug/cpqphp.h
+++ b/drivers/pci/hotplug/cpqphp.h
@@ -404,50 +404,44 @@ struct resource_lists {
 
 
 /* debugfs functions for the hotplug controller info */
-extern void cpqhp_initialize_debugfs(void);
-extern void cpqhp_shutdown_debugfs(void);
-extern void cpqhp_create_debugfs_files(struct controller *ctrl);
-extern void cpqhp_remove_debugfs_files(struct controller *ctrl);
+void cpqhp_initialize_debugfs(void);
+void cpqhp_shutdown_debugfs(void);
+void cpqhp_create_debugfs_files(struct controller *ctrl);
+void cpqhp_remove_debugfs_files(struct controller *ctrl);
 
 /* controller functions */
-extern void cpqhp_pushbutton_thread(unsigned long event_pointer);
-extern irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data);
-extern int cpqhp_find_available_resources(struct controller *ctrl,
-                                          void __iomem *rom_start);
-extern int cpqhp_event_start_thread(void);
-extern void cpqhp_event_stop_thread(void);
-extern struct pci_func *cpqhp_slot_create(unsigned char busnumber);
-extern struct pci_func *cpqhp_slot_find(unsigned char bus, unsigned char device,
-                                        unsigned char index);
-extern int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func);
-extern int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func);
-extern int cpqhp_hardware_test(struct controller *ctrl, int test_num);
+void cpqhp_pushbutton_thread(unsigned long event_pointer);
+irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data);
+int cpqhp_find_available_resources(struct controller *ctrl,
+                                   void __iomem *rom_start);
+int cpqhp_event_start_thread(void);
+void cpqhp_event_stop_thread(void);
+struct pci_func *cpqhp_slot_create(unsigned char busnumber);
+struct pci_func *cpqhp_slot_find(unsigned char bus, unsigned char device,
+                                 unsigned char index);
+int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func);
+int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func);
+int cpqhp_hardware_test(struct controller *ctrl, int test_num);
 
 /* resource functions */
-extern int      cpqhp_resource_sort_and_combine (struct pci_resource **head);
+int     cpqhp_resource_sort_and_combine (struct pci_resource **head);
 
 /* pci functions */
-extern int cpqhp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
-extern int cpqhp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num,
-                             u8 slot);
-extern int cpqhp_save_config(struct controller *ctrl, int busnumber,
-                             int is_hot_plug);
-extern int cpqhp_save_base_addr_length(struct controller *ctrl,
-                                       struct pci_func *func);
-extern int cpqhp_save_used_resources(struct controller *ctrl,
-                                     struct pci_func *func);
-extern int cpqhp_configure_board(struct controller *ctrl,
-                                 struct pci_func *func);
-extern int cpqhp_save_slot_config(struct controller *ctrl,
-                                  struct pci_func *new_slot);
-extern int cpqhp_valid_replace(struct controller *ctrl, struct pci_func *func);
-extern void cpqhp_destroy_board_resources(struct pci_func *func);
-extern int cpqhp_return_board_resources (struct pci_func *func,
-                                         struct resource_lists *resources);
-extern void cpqhp_destroy_resource_list(struct resource_lists *resources);
-extern int cpqhp_configure_device(struct controller *ctrl,
-                                  struct pci_func *func);
-extern int cpqhp_unconfigure_device(struct pci_func *func);
+int cpqhp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
+int cpqhp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num,
+                      u8 slot);
+int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug);
+int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func *func);
+int cpqhp_save_used_resources(struct controller *ctrl, struct pci_func *func);
+int cpqhp_configure_board(struct controller *ctrl, struct pci_func *func);
+int cpqhp_save_slot_config(struct controller *ctrl, struct pci_func *new_slot);
+int cpqhp_valid_replace(struct controller *ctrl, struct pci_func *func);
+void cpqhp_destroy_board_resources(struct pci_func *func);
+int cpqhp_return_board_resources(struct pci_func *func,
+                                 struct resource_lists *resources);
+void cpqhp_destroy_resource_list(struct resource_lists *resources);
+int cpqhp_configure_device(struct controller *ctrl, struct pci_func *func);
+int cpqhp_unconfigure_device(struct pci_func *func);
 
 /* Global variables */
 extern int cpqhp_debug;
diff --git a/drivers/pci/hotplug/cpqphp_nvram.h b/drivers/pci/hotplug/cpqphp_nvram.h
index e89c0702119d..34e4e54fcf15 100644
--- a/drivers/pci/hotplug/cpqphp_nvram.h
+++ b/drivers/pci/hotplug/cpqphp_nvram.h
@@ -30,26 +30,26 @@
 
 #ifndef CONFIG_HOTPLUG_PCI_COMPAQ_NVRAM
 
-static inline void compaq_nvram_init (void __iomem *rom_start)
+static inline void compaq_nvram_init(void __iomem *rom_start)
 {
         return;
 }
 
-static inline int compaq_nvram_load (void __iomem *rom_start, struct controller *ctrl)
+static inline int compaq_nvram_load(void __iomem *rom_start, struct controller *ctrl)
 {
         return 0;
 }
 
-static inline int compaq_nvram_store (void __iomem *rom_start)
+static inline int compaq_nvram_store(void __iomem *rom_start)
 {
         return 0;
 }
 
 #else
 
-extern void compaq_nvram_init   (void __iomem *rom_start);
-extern int compaq_nvram_load    (void __iomem *rom_start, struct controller *ctrl);
-extern int compaq_nvram_store   (void __iomem *rom_start);
+void compaq_nvram_init(void __iomem *rom_start);
+int compaq_nvram_load(void __iomem *rom_start, struct controller *ctrl);
+int compaq_nvram_store(void __iomem *rom_start);
 
 #endif
 
diff --git a/drivers/pci/hotplug/ibmphp.h b/drivers/pci/hotplug/ibmphp.h
index a8d391a4957d..8c5b25871d02 100644
--- a/drivers/pci/hotplug/ibmphp.h
+++ b/drivers/pci/hotplug/ibmphp.h
@@ -275,17 +275,17 @@ extern struct list_head ibmphp_slot_head;
 * FUNCTION PROTOTYPES                                      *
 ***********************************************************/
 
-extern void ibmphp_free_ebda_hpc_queue (void);
-extern int ibmphp_access_ebda (void);
-extern struct slot *ibmphp_get_slot_from_physical_num (u8);
-extern int ibmphp_get_total_hp_slots (void);
-extern void ibmphp_free_ibm_slot (struct slot *);
-extern void ibmphp_free_bus_info_queue (void);
-extern void ibmphp_free_ebda_pci_rsrc_queue (void);
-extern struct bus_info *ibmphp_find_same_bus_num (u32);
-extern int ibmphp_get_bus_index (u8);
-extern u16 ibmphp_get_total_controllers (void);
-extern int ibmphp_register_pci (void);
+void ibmphp_free_ebda_hpc_queue(void);
+int ibmphp_access_ebda(void);
+struct slot *ibmphp_get_slot_from_physical_num(u8);
+int ibmphp_get_total_hp_slots(void);
+void ibmphp_free_ibm_slot(struct slot *);
+void ibmphp_free_bus_info_queue(void);
+void ibmphp_free_ebda_pci_rsrc_queue(void);
+struct bus_info *ibmphp_find_same_bus_num(u32);
+int ibmphp_get_bus_index(u8);
+u16 ibmphp_get_total_controllers(void);
+int ibmphp_register_pci(void);
 
 /* passed parameters */
 #define MEM             0
@@ -381,24 +381,24 @@ struct res_needed {
 
 /* functions */
 
-extern int ibmphp_rsrc_init (void);
-extern int ibmphp_add_resource (struct resource_node *);
-extern int ibmphp_remove_resource (struct resource_node *);
-extern int ibmphp_find_resource (struct bus_node *, u32, struct resource_node **, int);
-extern int ibmphp_check_resource (struct resource_node *, u8);
-extern int ibmphp_remove_bus (struct bus_node *, u8);
-extern void ibmphp_free_resources (void);
-extern int ibmphp_add_pfmem_from_mem (struct resource_node *);
-extern struct bus_node *ibmphp_find_res_bus (u8);
-extern void ibmphp_print_test (void);   /* for debugging purposes */
+int ibmphp_rsrc_init(void);
+int ibmphp_add_resource(struct resource_node *);
+int ibmphp_remove_resource(struct resource_node *);
+int ibmphp_find_resource(struct bus_node *, u32, struct resource_node **, int);
+int ibmphp_check_resource(struct resource_node *, u8);
+int ibmphp_remove_bus(struct bus_node *, u8);
+void ibmphp_free_resources(void);
+int ibmphp_add_pfmem_from_mem(struct resource_node *);
+struct bus_node *ibmphp_find_res_bus(u8);
+void ibmphp_print_test(void);   /* for debugging purposes */
 
-extern void ibmphp_hpc_initvars (void);
-extern int ibmphp_hpc_readslot (struct slot *, u8, u8 *);
-extern int ibmphp_hpc_writeslot (struct slot *, u8);
-extern void ibmphp_lock_operations (void);
-extern void ibmphp_unlock_operations (void);
-extern int ibmphp_hpc_start_poll_thread (void);
-extern void ibmphp_hpc_stop_poll_thread (void);
+void ibmphp_hpc_initvars(void);
+int ibmphp_hpc_readslot(struct slot *, u8, u8 *);
+int ibmphp_hpc_writeslot(struct slot *, u8);
+void ibmphp_lock_operations(void);
+void ibmphp_unlock_operations(void);
+int ibmphp_hpc_start_poll_thread(void);
+void ibmphp_hpc_stop_poll_thread(void);
 
 //----------------------------------------------------------------------------
 
@@ -749,11 +749,11 @@ struct controller {
 
 /* Functions */
 
-extern int ibmphp_init_devno (struct slot **);  /* This function is called from EBDA, so we need it not be static */
-extern int ibmphp_do_disable_slot (struct slot *slot_cur);
-extern int ibmphp_update_slot_info (struct slot *);     /* This function is called from HPC, so we need it to not be be static */
-extern int ibmphp_configure_card (struct pci_func *, u8);
-extern int ibmphp_unconfigure_card (struct slot **, int);
+int ibmphp_init_devno(struct slot **);  /* This function is called from EBDA, so we need it not be static */
+int ibmphp_do_disable_slot(struct slot *slot_cur);
+int ibmphp_update_slot_info(struct slot *);     /* This function is called from HPC, so we need it to not be be static */
+int ibmphp_configure_card(struct pci_func *, u8);
+int ibmphp_unconfigure_card(struct slot **, int);
 extern struct hotplug_slot_ops ibmphp_hotplug_slot_ops;
 
 #endif                          //__IBMPHP_H
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index 202f4a969eb5..ec20f74c8981 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -41,6 +41,7 @@
 #include <linux/pci_hotplug.h>
 #include <asm/uaccess.h>
 #include "../pci.h"
+#include "cpci_hotplug.h"
 
 #define MY_NAME "pci_hotplug"
 
@@ -63,14 +64,6 @@ static bool debug;
 static LIST_HEAD(pci_hotplug_slot_list);
 static DEFINE_MUTEX(pci_hp_mutex);
 
-#ifdef CONFIG_HOTPLUG_PCI_CPCI
-extern int cpci_hotplug_init(int debug);
-extern void cpci_hotplug_exit(void);
-#else
-static inline int cpci_hotplug_init(int debug) { return 0; }
-static inline void cpci_hotplug_exit(void) { }
-#endif
-
 /* Weee, fun with macros... */
 #define GET_STATUS(name,type)   \
 static int get_##name (struct hotplug_slot *slot, type *value)          \
@@ -524,13 +517,11 @@ int pci_hp_deregister(struct hotplug_slot *hotplug)
  *
  * Returns 0 if successful, anything else for an error.
  */
-int __must_check pci_hp_change_slot_info(struct hotplug_slot *hotplug,
-                                         struct hotplug_slot_info *info)
+int pci_hp_change_slot_info(struct hotplug_slot *hotplug,
+                            struct hotplug_slot_info *info)
 {
-        struct pci_slot *slot;
         if (!hotplug || !info)
                 return -ENODEV;
-        slot = hotplug->pci_slot;
 
         memcpy(hotplug->info, info, sizeof(struct hotplug_slot_info));
 
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 2c113de94323..7fb326983ed6 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -127,15 +127,15 @@ struct controller {
 #define NO_CMD_CMPL(ctrl)       ((ctrl)->slot_cap & PCI_EXP_SLTCAP_NCCS)
 #define PSN(ctrl)               ((ctrl)->slot_cap >> 19)
 
-extern int pciehp_sysfs_enable_slot(struct slot *slot);
-extern int pciehp_sysfs_disable_slot(struct slot *slot);
-extern u8 pciehp_handle_attention_button(struct slot *p_slot);
-extern u8 pciehp_handle_switch_change(struct slot *p_slot);
-extern u8 pciehp_handle_presence_change(struct slot *p_slot);
-extern u8 pciehp_handle_power_fault(struct slot *p_slot);
-extern int pciehp_configure_device(struct slot *p_slot);
-extern int pciehp_unconfigure_device(struct slot *p_slot);
-extern void pciehp_queue_pushbutton_work(struct work_struct *work);
+int pciehp_sysfs_enable_slot(struct slot *slot);
+int pciehp_sysfs_disable_slot(struct slot *slot);
+u8 pciehp_handle_attention_button(struct slot *p_slot);
+u8 pciehp_handle_switch_change(struct slot *p_slot);
+u8 pciehp_handle_presence_change(struct slot *p_slot);
+u8 pciehp_handle_power_fault(struct slot *p_slot);
+int pciehp_configure_device(struct slot *p_slot);
+int pciehp_unconfigure_device(struct slot *p_slot);
+void pciehp_queue_pushbutton_work(struct work_struct *work);
 struct controller *pcie_init(struct pcie_device *dev);
 int pcie_init_notification(struct controller *ctrl);
 int pciehp_enable_slot(struct slot *p_slot);
@@ -166,8 +166,8 @@ static inline const char *slot_name(struct slot *slot)
 #include <acpi/acpi_bus.h>
 #include <linux/pci-acpi.h>
 
-extern void __init pciehp_acpi_slot_detection_init(void);
-extern int pciehp_acpi_slot_detection_check(struct pci_dev *dev);
+void __init pciehp_acpi_slot_detection_init(void);
+int pciehp_acpi_slot_detection_check(struct pci_dev *dev);
 
 static inline void pciehp_firmware_init(void)
 {
diff --git a/drivers/pci/hotplug/pciehp_acpi.c b/drivers/pci/hotplug/pciehp_acpi.c
index 24d709b7388c..ead7c534095e 100644
--- a/drivers/pci/hotplug/pciehp_acpi.c
+++ b/drivers/pci/hotplug/pciehp_acpi.c
@@ -90,7 +90,7 @@ static int __init dummy_probe(struct pcie_device *dev)
         slot = kzalloc(sizeof(*slot), GFP_KERNEL);
         if (!slot)
                 return -ENOMEM;
-        slot->number = slot_cap >> 19;
+        slot->number = (slot_cap & PCI_EXP_SLTCAP_PSN) >> 19;
         list_for_each_entry(tmp, &dummy_slots, list) {
                 if (tmp->number == slot->number)
                         dup_slot_id++;
diff --git a/drivers/pci/hotplug/rpadlpar.h b/drivers/pci/hotplug/rpadlpar.h
index 4a0a59b82eae..81df93931ad0 100644
--- a/drivers/pci/hotplug/rpadlpar.h
+++ b/drivers/pci/hotplug/rpadlpar.h
@@ -15,10 +15,10 @@
 #ifndef _RPADLPAR_IO_H_
 #define _RPADLPAR_IO_H_
 
-extern int dlpar_sysfs_init(void);
-extern void dlpar_sysfs_exit(void);
+int dlpar_sysfs_init(void);
+void dlpar_sysfs_exit(void);
 
-extern int dlpar_add_slot(char *drc_name);
-extern int dlpar_remove_slot(char *drc_name);
+int dlpar_add_slot(char *drc_name);
+int dlpar_remove_slot(char *drc_name);
 
 #endif
diff --git a/drivers/pci/hotplug/rpaphp.h b/drivers/pci/hotplug/rpaphp.h
index df5677440a08..3135856e5e1c 100644
--- a/drivers/pci/hotplug/rpaphp.h
+++ b/drivers/pci/hotplug/rpaphp.h
@@ -86,18 +86,18 @@ extern struct list_head rpaphp_slot_head;
 /* function prototypes */
 
 /* rpaphp_pci.c */
-extern int rpaphp_enable_slot(struct slot *slot);
-extern int rpaphp_get_sensor_state(struct slot *slot, int *state);
+int rpaphp_enable_slot(struct slot *slot);
+int rpaphp_get_sensor_state(struct slot *slot, int *state);
 
 /* rpaphp_core.c */
-extern int rpaphp_add_slot(struct device_node *dn);
-extern int rpaphp_get_drc_props(struct device_node *dn, int *drc_index,
+int rpaphp_add_slot(struct device_node *dn);
+int rpaphp_get_drc_props(struct device_node *dn, int *drc_index,
                 char **drc_name, char **drc_type, int *drc_power_domain);
 
 /* rpaphp_slot.c */
-extern void dealloc_slot_struct(struct slot *slot);
-extern struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain);
-extern int rpaphp_register_slot(struct slot *slot);
-extern int rpaphp_deregister_slot(struct slot *slot);
+void dealloc_slot_struct(struct slot *slot);
+struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain);
+int rpaphp_register_slot(struct slot *slot);
+int rpaphp_deregister_slot(struct slot *slot);
         
 #endif                          /* _PPC64PHP_H */
diff --git a/drivers/pci/hotplug/shpchp.h b/drivers/pci/hotplug/shpchp.h
index b849f995075a..e260f207a90e 100644
--- a/drivers/pci/hotplug/shpchp.h
+++ b/drivers/pci/hotplug/shpchp.h
@@ -168,19 +168,19 @@ struct controller {
 #define WRONG_BUS_FREQUENCY             0x0000000D
 #define POWER_FAILURE                   0x0000000E
 
-extern int __must_check shpchp_create_ctrl_files(struct controller *ctrl);
-extern void shpchp_remove_ctrl_files(struct controller *ctrl);
-extern int shpchp_sysfs_enable_slot(struct slot *slot);
-extern int shpchp_sysfs_disable_slot(struct slot *slot);
-extern u8 shpchp_handle_attention_button(u8 hp_slot, struct controller *ctrl);
-extern u8 shpchp_handle_switch_change(u8 hp_slot, struct controller *ctrl);
-extern u8 shpchp_handle_presence_change(u8 hp_slot, struct controller *ctrl);
-extern u8 shpchp_handle_power_fault(u8 hp_slot, struct controller *ctrl);
-extern int shpchp_configure_device(struct slot *p_slot);
-extern int shpchp_unconfigure_device(struct slot *p_slot);
-extern void cleanup_slots(struct controller *ctrl);
-extern void shpchp_queue_pushbutton_work(struct work_struct *work);
-extern int shpc_init( struct controller *ctrl, struct pci_dev *pdev);
+int __must_check shpchp_create_ctrl_files(struct controller *ctrl);
+void shpchp_remove_ctrl_files(struct controller *ctrl);
+int shpchp_sysfs_enable_slot(struct slot *slot);
+int shpchp_sysfs_disable_slot(struct slot *slot);
+u8 shpchp_handle_attention_button(u8 hp_slot, struct controller *ctrl);
+u8 shpchp_handle_switch_change(u8 hp_slot, struct controller *ctrl);
+u8 shpchp_handle_presence_change(u8 hp_slot, struct controller *ctrl);
+u8 shpchp_handle_power_fault(u8 hp_slot, struct controller *ctrl);
+int shpchp_configure_device(struct slot *p_slot);
+int shpchp_unconfigure_device(struct slot *p_slot);
+void cleanup_slots(struct controller *ctrl);
+void shpchp_queue_pushbutton_work(struct work_struct *work);
+int shpc_init( struct controller *ctrl, struct pci_dev *pdev);
 
 static inline const char *slot_name(struct slot *slot)
 {
diff --git a/drivers/pci/hotplug/shpchp_sysfs.c b/drivers/pci/hotplug/shpchp_sysfs.c
index eeb23ceae4a8..e8c31fe20566 100644
--- a/drivers/pci/hotplug/shpchp_sysfs.c
+++ b/drivers/pci/hotplug/shpchp_sysfs.c
@@ -85,7 +85,7 @@ static ssize_t show_ctrl (struct device *dev, struct device_attribute *attr, cha
 }
 static DEVICE_ATTR (ctrl, S_IRUGO, show_ctrl, NULL);
 
-int __must_check shpchp_create_ctrl_files (struct controller *ctrl)
+int shpchp_create_ctrl_files (struct controller *ctrl)
 {
         return device_create_file (&ctrl->pci_dev->dev, &dev_attr_ctrl);
 }
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 00cc78c7aa04..d40bed726769 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -22,10 +22,12 @@
 #include <linux/slab.h>
 
 #include "pci.h"
-#include "msi.h"
 
 static int pci_msi_enable = 1;
 
+#define msix_table_size(flags)  ((flags & PCI_MSIX_FLAGS_QSIZE) + 1)
+
+
 /* Arch hooks */
 
 #ifndef arch_msi_check_device
@@ -111,32 +113,26 @@ void default_restore_msi_irqs(struct pci_dev *dev, int irq)
 }
 #endif
 
-static void msi_set_enable(struct pci_dev *dev, int pos, int enable)
+static void msi_set_enable(struct pci_dev *dev, int enable)
 {
         u16 control;
 
-        BUG_ON(!pos);
-
-        pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &control);
+        pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
         control &= ~PCI_MSI_FLAGS_ENABLE;
         if (enable)
                 control |= PCI_MSI_FLAGS_ENABLE;
-        pci_write_config_word(dev, pos + PCI_MSI_FLAGS, control);
+        pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
 }
 
 static void msix_set_enable(struct pci_dev *dev, int enable)
 {
-        int pos;
         u16 control;
 
-        pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
-        if (pos) {
-                pci_read_config_word(dev, pos + PCI_MSIX_FLAGS, &control);
-                control &= ~PCI_MSIX_FLAGS_ENABLE;
-                if (enable)
-                        control |= PCI_MSIX_FLAGS_ENABLE;
-                pci_write_config_word(dev, pos + PCI_MSIX_FLAGS, control);
-        }
+        pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &control);
+        control &= ~PCI_MSIX_FLAGS_ENABLE;
+        if (enable)
+                control |= PCI_MSIX_FLAGS_ENABLE;
+        pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, control);
 }
 
 static inline __attribute_const__ u32 msi_mask(unsigned x)
@@ -247,18 +243,18 @@ void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
                 msg->data = readl(base + PCI_MSIX_ENTRY_DATA);
         } else {
                 struct pci_dev *dev = entry->dev;
-                int pos = entry->msi_attrib.pos;
+                int pos = dev->msi_cap;
                 u16 data;
 
-                pci_read_config_dword(dev, msi_lower_address_reg(pos),
-                                        &msg->address_lo);
+                pci_read_config_dword(dev, pos + PCI_MSI_ADDRESS_LO,
+                                      &msg->address_lo);
                 if (entry->msi_attrib.is_64) {
-                        pci_read_config_dword(dev, msi_upper_address_reg(pos),
-                                                &msg->address_hi);
-                        pci_read_config_word(dev, msi_data_reg(pos, 1), &data);
+                        pci_read_config_dword(dev, pos + PCI_MSI_ADDRESS_HI,
+                                              &msg->address_hi);
+                        pci_read_config_word(dev, pos + PCI_MSI_DATA_64, &data);
                 } else {
                         msg->address_hi = 0;
-                        pci_read_config_word(dev, msi_data_reg(pos, 0), &data);
+                        pci_read_config_word(dev, pos + PCI_MSI_DATA_32, &data);
                 }
                 msg->data = data;
         }
@@ -302,24 +298,24 @@ void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
                 writel(msg->data, base + PCI_MSIX_ENTRY_DATA);
         } else {
                 struct pci_dev *dev = entry->dev;
-                int pos = entry->msi_attrib.pos;
+                int pos = dev->msi_cap;
                 u16 msgctl;
 
-                pci_read_config_word(dev, msi_control_reg(pos), &msgctl);
+                pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &msgctl);
                 msgctl &= ~PCI_MSI_FLAGS_QSIZE;
                 msgctl |= entry->msi_attrib.multiple << 4;
-                pci_write_config_word(dev, msi_control_reg(pos), msgctl);
+                pci_write_config_word(dev, pos + PCI_MSI_FLAGS, msgctl);
 
-                pci_write_config_dword(dev, msi_lower_address_reg(pos),
-                                        msg->address_lo);
+                pci_write_config_dword(dev, pos + PCI_MSI_ADDRESS_LO,
+                                       msg->address_lo);
                 if (entry->msi_attrib.is_64) {
-                        pci_write_config_dword(dev, msi_upper_address_reg(pos),
-                                                msg->address_hi);
-                        pci_write_config_word(dev, msi_data_reg(pos, 1),
-                                                msg->data);
+                        pci_write_config_dword(dev, pos + PCI_MSI_ADDRESS_HI,
+                                               msg->address_hi);
+                        pci_write_config_word(dev, pos + PCI_MSI_DATA_64,
+                                              msg->data);
                 } else {
-                        pci_write_config_word(dev, msi_data_reg(pos, 0),
-                                                msg->data);
+                        pci_write_config_word(dev, pos + PCI_MSI_DATA_32,
+                                              msg->data);
                 }
         }
         entry->msg = *msg;
@@ -391,7 +387,6 @@ static void pci_intx_for_msi(struct pci_dev *dev, int enable)
 
 static void __pci_restore_msi_state(struct pci_dev *dev)
 {
-        int pos;
         u16 control;
         struct msi_desc *entry;
 
@@ -399,22 +394,20 @@ static void __pci_restore_msi_state(struct pci_dev *dev)
                 return;
 
         entry = irq_get_msi_desc(dev->irq);
-        pos = entry->msi_attrib.pos;
 
         pci_intx_for_msi(dev, 0);
-        msi_set_enable(dev, pos, 0);
+        msi_set_enable(dev, 0);
         arch_restore_msi_irqs(dev, dev->irq);
 
-        pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &control);
+        pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
         msi_mask_irq(entry, msi_capable_mask(control), entry->masked);
         control &= ~PCI_MSI_FLAGS_QSIZE;
         control |= (entry->msi_attrib.multiple << 4) | PCI_MSI_FLAGS_ENABLE;
-        pci_write_config_word(dev, pos + PCI_MSI_FLAGS, control);
+        pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
 }
 
 static void __pci_restore_msix_state(struct pci_dev *dev)
 {
-        int pos;
         struct msi_desc *entry;
         u16 control;
 
@@ -422,13 +415,12 @@ static void __pci_restore_msix_state(struct pci_dev *dev)
                 return;
         BUG_ON(list_empty(&dev->msi_list));
         entry = list_first_entry(&dev->msi_list, struct msi_desc, list);
-        pos = entry->msi_attrib.pos;
-        pci_read_config_word(dev, pos + PCI_MSIX_FLAGS, &control);
+        pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &control);
 
         /* route the table */
         pci_intx_for_msi(dev, 0);
         control |= PCI_MSIX_FLAGS_ENABLE | PCI_MSIX_FLAGS_MASKALL;
-        pci_write_config_word(dev, pos + PCI_MSIX_FLAGS, control);
+        pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, control);
 
         list_for_each_entry(entry, &dev->msi_list, list) {
                 arch_restore_msi_irqs(dev, entry->irq);
@@ -436,7 +428,7 @@ static void __pci_restore_msix_state(struct pci_dev *dev)
         }
 
         control &= ~PCI_MSIX_FLAGS_MASKALL;
-        pci_write_config_word(dev, pos + PCI_MSIX_FLAGS, control);
+        pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, control);
 }
 
 void pci_restore_msi_state(struct pci_dev *dev)
@@ -484,12 +476,12 @@ static struct msi_attribute mode_attribute =
         __ATTR(mode, S_IRUGO, show_msi_mode, NULL);
 
 
-struct attribute *msi_irq_default_attrs[] = {
+static struct attribute *msi_irq_default_attrs[] = {
         &mode_attribute.attr,
         NULL
 };
 
-void msi_kobj_release(struct kobject *kobj)
+static void msi_kobj_release(struct kobject *kobj)
 {
         struct msi_desc *entry = to_msi_desc(kobj);
 
@@ -552,27 +544,27 @@ out_unroll:
 static int msi_capability_init(struct pci_dev *dev, int nvec)
 {
         struct msi_desc *entry;
-        int pos, ret;
+        int ret;
         u16 control;
         unsigned mask;
 
-        pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
-        msi_set_enable(dev, pos, 0);    /* Disable MSI during set up */
+        msi_set_enable(dev, 0); /* Disable MSI during set up */
 
-        pci_read_config_word(dev, msi_control_reg(pos), &control);
+        pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
         /* MSI Entry Initialization */
         entry = alloc_msi_entry(dev);
         if (!entry)
                 return -ENOMEM;
 
         entry->msi_attrib.is_msix       = 0;
-        entry->msi_attrib.is_64         = is_64bit_address(control);
+        entry->msi_attrib.is_64         = !!(control & PCI_MSI_FLAGS_64BIT);
         entry->msi_attrib.entry_nr      = 0;
-        entry->msi_attrib.maskbit       = is_mask_bit_support(control);
+        entry->msi_attrib.maskbit       = !!(control & PCI_MSI_FLAGS_MASKBIT);
         entry->msi_attrib.default_irq   = dev->irq;     /* Save IOAPIC IRQ */
-        entry->msi_attrib.pos           = pos;
+        entry->msi_attrib.pos           = dev->msi_cap;
 
-        entry->mask_pos = msi_mask_reg(pos, entry->msi_attrib.is_64);
+        entry->mask_pos = dev->msi_cap + (control & PCI_MSI_FLAGS_64BIT) ?
+                PCI_MSI_MASK_64 : PCI_MSI_MASK_32;
         /* All MSIs are unmasked by default, Mask them all */
         if (entry->msi_attrib.maskbit)
                 pci_read_config_dword(dev, entry->mask_pos, &entry->masked);
@@ -598,31 +590,30 @@ static int msi_capability_init(struct pci_dev *dev, int nvec)
 
         /* Set MSI enabled bits  */
         pci_intx_for_msi(dev, 0);
-        msi_set_enable(dev, pos, 1);
+        msi_set_enable(dev, 1);
         dev->msi_enabled = 1;
 
         dev->irq = entry->irq;
         return 0;
 }
 
-static void __iomem *msix_map_region(struct pci_dev *dev, unsigned pos,
-                                                        unsigned nr_entries)
+static void __iomem *msix_map_region(struct pci_dev *dev, unsigned nr_entries)
 {
         resource_size_t phys_addr;
         u32 table_offset;
         u8 bir;
 
-        pci_read_config_dword(dev, msix_table_offset_reg(pos), &table_offset);
-        bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);
-        table_offset &= ~PCI_MSIX_FLAGS_BIRMASK;
+        pci_read_config_dword(dev, dev->msix_cap + PCI_MSIX_TABLE,
+                              &table_offset);
+        bir = (u8)(table_offset & PCI_MSIX_TABLE_BIR);
+        table_offset &= PCI_MSIX_TABLE_OFFSET;
         phys_addr = pci_resource_start(dev, bir) + table_offset;
 
         return ioremap_nocache(phys_addr, nr_entries * PCI_MSIX_ENTRY_SIZE);
 }
 
-static int msix_setup_entries(struct pci_dev *dev, unsigned pos,
-                                void __iomem *base, struct msix_entry *entries,
-                                int nvec)
+static int msix_setup_entries(struct pci_dev *dev, void __iomem *base,
+                              struct msix_entry *entries, int nvec)
 {
         struct msi_desc *entry;
         int i;
@@ -642,7 +633,7 @@ static int msix_setup_entries(struct pci_dev *dev, unsigned pos,
                 entry->msi_attrib.is_64         = 1;
                 entry->msi_attrib.entry_nr      = entries[i].entry;
                 entry->msi_attrib.default_irq   = dev->irq;
-                entry->msi_attrib.pos           = pos;
+                entry->msi_attrib.pos           = dev->msix_cap;
                 entry->mask_base                = base;
 
                 list_add_tail(&entry->list, &dev->msi_list);
@@ -652,7 +643,7 @@ static int msix_setup_entries(struct pci_dev *dev, unsigned pos,
 }
 
 static void msix_program_entries(struct pci_dev *dev,
-                                        struct msix_entry *entries)
+                                 struct msix_entry *entries)
 {
         struct msi_desc *entry;
         int i = 0;
@@ -682,23 +673,22 @@ static void msix_program_entries(struct pci_dev *dev,
 static int msix_capability_init(struct pci_dev *dev,
                                 struct msix_entry *entries, int nvec)
 {
-        int pos, ret;
+        int ret;
         u16 control;
         void __iomem *base;
 
-        pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
-        pci_read_config_word(dev, pos + PCI_MSIX_FLAGS, &control);
+        pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &control);
 
         /* Ensure MSI-X is disabled while it is set up */
         control &= ~PCI_MSIX_FLAGS_ENABLE;
-        pci_write_config_word(dev, pos + PCI_MSIX_FLAGS, control);
+        pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, control);
 
         /* Request & Map MSI-X table region */
-        base = msix_map_region(dev, pos, multi_msix_capable(control));
+        base = msix_map_region(dev, msix_table_size(control));
         if (!base)
                 return -ENOMEM;
 
-        ret = msix_setup_entries(dev, pos, base, entries, nvec);
+        ret = msix_setup_entries(dev, base, entries, nvec);
         if (ret)
                 return ret;
 
@@ -712,7 +702,7 @@ static int msix_capability_init(struct pci_dev *dev,
          * interrupts coming in before they're fully set up.
          */
         control |= PCI_MSIX_FLAGS_MASKALL | PCI_MSIX_FLAGS_ENABLE;
-        pci_write_config_word(dev, pos + PCI_MSIX_FLAGS, control);
+        pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, control);
 
         msix_program_entries(dev, entries);
 
@@ -727,7 +717,7 @@ static int msix_capability_init(struct pci_dev *dev,
         dev->msix_enabled = 1;
 
         control &= ~PCI_MSIX_FLAGS_MASKALL;
-        pci_write_config_word(dev, pos + PCI_MSIX_FLAGS, control);
+        pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, control);
 
         return 0;
 
@@ -795,9 +785,6 @@ static int pci_msi_check_device(struct pci_dev *dev, int nvec, int type)
         if (ret)
                 return ret;
 
-        if (!pci_find_capability(dev, type))
-                return -EINVAL;
-
         return 0;
 }
 
@@ -816,13 +803,13 @@ static int pci_msi_check_device(struct pci_dev *dev, int nvec, int type)
  */
 int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec)
 {
-        int status, pos, maxvec;
+        int status, maxvec;
         u16 msgctl;
 
-        pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
-        if (!pos)
+        if (!dev->msi_cap)
                 return -EINVAL;
-        pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &msgctl);
+
+        pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &msgctl);
         maxvec = 1 << ((msgctl & PCI_MSI_FLAGS_QMASK) >> 1);
         if (nvec > maxvec)
                 return maxvec;
@@ -847,14 +834,13 @@ EXPORT_SYMBOL(pci_enable_msi_block);
 
 int pci_enable_msi_block_auto(struct pci_dev *dev, unsigned int *maxvec)
 {
-        int ret, pos, nvec;
+        int ret, nvec;
         u16 msgctl;
 
-        pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
-        if (!pos)
+        if (!dev->msi_cap)
                 return -EINVAL;
 
-        pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &msgctl);
+        pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &msgctl);
         ret = 1 << ((msgctl & PCI_MSI_FLAGS_QMASK) >> 1);
 
         if (maxvec)
@@ -876,21 +862,19 @@ void pci_msi_shutdown(struct pci_dev *dev)
         struct msi_desc *desc;
         u32 mask;
         u16 ctrl;
-        unsigned pos;
 
         if (!pci_msi_enable || !dev || !dev->msi_enabled)
                 return;
 
         BUG_ON(list_empty(&dev->msi_list));
         desc = list_first_entry(&dev->msi_list, struct msi_desc, list);
-        pos = desc->msi_attrib.pos;
 
-        msi_set_enable(dev, pos, 0);
+        msi_set_enable(dev, 0);
         pci_intx_for_msi(dev, 1);
         dev->msi_enabled = 0;
 
         /* Return the device with MSI unmasked as initial states */
-        pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &ctrl);
+        pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &ctrl);
         mask = msi_capable_mask(ctrl);
         /* Keep cached state to be restored */
         __msi_mask_irq(desc, mask, ~mask);
@@ -917,15 +901,13 @@ EXPORT_SYMBOL(pci_disable_msi);
  */
 int pci_msix_table_size(struct pci_dev *dev)
 {
-        int pos;
         u16 control;
 
-        pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
-        if (!pos)
+        if (!dev->msix_cap)
                 return 0;
 
-        pci_read_config_word(dev, msi_control_reg(pos), &control);
-        return multi_msix_capable(control);
+        pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &control);
+        return msix_table_size(control);
 }
 
 /**
@@ -948,7 +930,7 @@ int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec)
         int status, nr_entries;
         int i, j;
 
-        if (!entries)
+        if (!entries || !dev->msix_cap)
                 return -EINVAL;
 
         status = pci_msi_check_device(dev, nvec, PCI_CAP_ID_MSIX);
@@ -1048,15 +1030,17 @@ EXPORT_SYMBOL(pci_msi_enabled);
 
 void pci_msi_init_pci_dev(struct pci_dev *dev)
 {
-        int pos;
         INIT_LIST_HEAD(&dev->msi_list);
 
         /* Disable the msi hardware to avoid screaming interrupts
          * during boot.  This is the power on reset default so
          * usually this should be a noop.
          */
-        pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
-        if (pos)
-                msi_set_enable(dev, pos, 0);
-        msix_set_enable(dev, 0);
+        dev->msi_cap = pci_find_capability(dev, PCI_CAP_ID_MSI);
+        if (dev->msi_cap)
+                msi_set_enable(dev, 0);
+
+        dev->msix_cap = pci_find_capability(dev, PCI_CAP_ID_MSIX);
+        if (dev->msix_cap)
+                msix_set_enable(dev, 0);
 }
diff --git a/drivers/pci/msi.h b/drivers/pci/msi.h
deleted file mode 100644
index 65c42f80f23e..000000000000
--- a/drivers/pci/msi.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright (C) 2003-2004 Intel
- * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
- */
-
-#ifndef MSI_H
-#define MSI_H
-
-#define msi_control_reg(base)           (base + PCI_MSI_FLAGS)
-#define msi_lower_address_reg(base)     (base + PCI_MSI_ADDRESS_LO)
-#define msi_upper_address_reg(base)     (base + PCI_MSI_ADDRESS_HI)
-#define msi_data_reg(base, is64bit)     \
-        (base + ((is64bit == 1) ? PCI_MSI_DATA_64 : PCI_MSI_DATA_32))
-#define msi_mask_reg(base, is64bit)     \
-        (base + ((is64bit == 1) ? PCI_MSI_MASK_64 : PCI_MSI_MASK_32))
-#define is_64bit_address(control)       (!!(control & PCI_MSI_FLAGS_64BIT))
-#define is_mask_bit_support(control)    (!!(control & PCI_MSI_FLAGS_MASKBIT))
-
-#define msix_table_offset_reg(base)     (base + PCI_MSIX_TABLE)
-#define msix_pba_offset_reg(base)       (base + PCI_MSIX_PBA)
-#define msix_table_size(control)        ((control & PCI_MSIX_FLAGS_QSIZE)+1)
-#define multi_msix_capable(control)     msix_table_size((control))
-
-#endif /* MSI_H */
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 5147c210df52..e4b1fb2c0f5d 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -288,6 +288,32 @@ static struct pci_platform_pm_ops acpi_pci_platform_pm = {
         .run_wake = acpi_pci_run_wake,
 };
 
+void acpi_pci_add_bus(struct pci_bus *bus)
+{
+        acpi_handle handle = NULL;
+
+        if (bus->bridge)
+                handle = ACPI_HANDLE(bus->bridge);
+        if (acpi_pci_disabled || handle == NULL)
+                return;
+
+        acpi_pci_slot_enumerate(bus, handle);
+        acpiphp_enumerate_slots(bus, handle);
+}
+
+void acpi_pci_remove_bus(struct pci_bus *bus)
+{
+        /*
+         * bus->bridge->acpi_node.handle has already been reset to NULL
+         * when acpi_pci_remove_bus() is called, so don't check ACPI handle.
+         */
+        if (acpi_pci_disabled)
+                return;
+
+        acpiphp_remove_slots(bus);
+        acpi_pci_slot_remove(bus);
+}
+
 /* ACPI bus type */
 static int acpi_pci_find_device(struct device *dev, acpi_handle *handle)
 {
@@ -362,7 +388,11 @@ static int __init acpi_pci_init(void)
         ret = register_acpi_bus_type(&acpi_pci_bus);
         if (ret)
                 return 0;
+
         pci_set_platform_pm(&acpi_pci_platform_pm);
+        acpi_pci_slot_init();
+        acpiphp_init();
+
         return 0;
 }
 arch_initcall(acpi_pci_init);
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 9c6e9bb674ec..5b4a9d9cd200 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -897,7 +897,7 @@ int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma,
 
         if (pci_resource_len(pdev, resno) == 0)
                 return 0;
-        nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+        nr = vma_pages(vma);
         start = vma->vm_pgoff;
         size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1;
         pci_start = (mmap_api == PCI_MMAP_PROCFS) ?
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index b099e0025d2b..a899d8bb190d 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -646,15 +646,11 @@ static int pci_platform_power_transition(struct pci_dev *dev, pci_power_t state)
                 error = platform_pci_set_power_state(dev, state);
                 if (!error)
                         pci_update_current_state(dev, state);
-                /* Fall back to PCI_D0 if native PM is not supported */
-                if (!dev->pm_cap)
-                        dev->current_state = PCI_D0;
-        } else {
+        } else
                 error = -ENODEV;
-                /* Fall back to PCI_D0 if native PM is not supported */
-                if (!dev->pm_cap)
-                        dev->current_state = PCI_D0;
-        }
+
+        if (error && !dev->pm_cap) /* Fall back to PCI_D0 */
+                dev->current_state = PCI_D0;
 
         return error;
 }
@@ -1575,7 +1571,7 @@ void pci_pme_active(struct pci_dev *dev, bool enable)
 {
         u16 pmcsr;
 
-        if (!dev->pm_cap)
+        if (!dev->pme_support)
                 return;
 
         pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
@@ -1924,6 +1920,7 @@ void pci_pm_init(struct pci_dev *dev)
         dev->wakeup_prepared = false;
 
         dev->pm_cap = 0;
+        dev->pme_support = 0;
 
         /* find PCI PM capability in list */
         pm = pci_find_capability(dev, PCI_CAP_ID_PM);
@@ -1975,8 +1972,6 @@ void pci_pm_init(struct pci_dev *dev)
                 device_set_wakeup_capable(&dev->dev, true);
                 /* Disable the PME# generation functionality */
                 pci_pme_active(dev, false);
-        } else {
-                dev->pme_support = 0;
         }
 }
 
@@ -2619,7 +2614,7 @@ void pci_release_selected_regions(struct pci_dev *pdev, int bars)
                         pci_release_region(pdev, i);
 }
 
-int __pci_request_selected_regions(struct pci_dev *pdev, int bars,
+static int __pci_request_selected_regions(struct pci_dev *pdev, int bars,
                                  const char *res_name, int excl)
 {
         int i;
@@ -3699,7 +3694,7 @@ static DEFINE_SPINLOCK(resource_alignment_lock);
  * RETURNS: Resource alignment if it is specified.
  *          Zero if it is not specified.
  */
-resource_size_t pci_specified_resource_alignment(struct pci_dev *dev)
+static resource_size_t pci_specified_resource_alignment(struct pci_dev *dev)
 {
         int seg, bus, slot, func, align_order, count;
         resource_size_t align = 0;
@@ -3812,7 +3807,7 @@ void pci_reassigndev_resource_alignment(struct pci_dev *dev)
         }
 }
 
-ssize_t pci_set_resource_alignment_param(const char *buf, size_t count)
+static ssize_t pci_set_resource_alignment_param(const char *buf, size_t count)
 {
         if (count > RESOURCE_ALIGNMENT_PARAM_SIZE - 1)
                 count = RESOURCE_ALIGNMENT_PARAM_SIZE - 1;
@@ -3823,7 +3818,7 @@ ssize_t pci_set_resource_alignment_param(const char *buf, size_t count)
         return count;
 }
 
-ssize_t pci_get_resource_alignment_param(char *buf, size_t size)
+static ssize_t pci_get_resource_alignment_param(char *buf, size_t size)
 {
         size_t count;
         spin_lock(&resource_alignment_lock);
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 7346ee68f47d..68678ed76b0d 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -8,26 +8,25 @@
 
 /* Functions internal to the PCI core code */
 
-extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
-extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
+int pci_create_sysfs_dev_files(struct pci_dev *pdev);
+void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
 static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
 { return; }
 static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
 { return; }
 #else
-extern void pci_create_firmware_label_files(struct pci_dev *pdev);
-extern void pci_remove_firmware_label_files(struct pci_dev *pdev);
+void pci_create_firmware_label_files(struct pci_dev *pdev);
+void pci_remove_firmware_label_files(struct pci_dev *pdev);
 #endif
-extern void pci_cleanup_rom(struct pci_dev *dev);
+void pci_cleanup_rom(struct pci_dev *dev);
 #ifdef HAVE_PCI_MMAP
 enum pci_mmap_api {
         PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
         PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
 };
-extern int pci_mmap_fits(struct pci_dev *pdev, int resno,
-                         struct vm_area_struct *vmai,
-                         enum pci_mmap_api mmap_api);
+int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
+                  enum pci_mmap_api mmap_api);
 #endif
 int pci_probe_reset_function(struct pci_dev *dev);
 
@@ -60,17 +59,17 @@ struct pci_platform_pm_ops {
         int (*run_wake)(struct pci_dev *dev, bool enable);
 };
 
-extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
-extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
-extern void pci_power_up(struct pci_dev *dev);
-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 pci_allocate_cap_save_buffers(struct pci_dev *dev);
+int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
+void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
+void pci_power_up(struct pci_dev *dev);
+void pci_disable_enabled_device(struct pci_dev *dev);
+int pci_finish_runtime_suspend(struct pci_dev *dev);
+int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
+void pci_wakeup_bus(struct pci_bus *bus);
+void pci_config_pm_runtime_get(struct pci_dev *dev);
+void pci_config_pm_runtime_put(struct pci_dev *dev);
+void pci_pm_init(struct pci_dev *dev);
+void pci_allocate_cap_save_buffers(struct pci_dev *dev);
 void pci_free_cap_save_buffers(struct pci_dev *dev);
 
 static inline void pci_wakeup_event(struct pci_dev *dev)
@@ -96,7 +95,7 @@ struct pci_vpd {
         struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
 };
 
-extern int pci_vpd_pci22_init(struct pci_dev *dev);
+int pci_vpd_pci22_init(struct pci_dev *dev);
 static inline void pci_vpd_release(struct pci_dev *dev)
 {
         if (dev->vpd)
@@ -105,9 +104,9 @@ static inline void pci_vpd_release(struct pci_dev *dev)
 
 /* PCI /proc functions */
 #ifdef CONFIG_PROC_FS
-extern int pci_proc_attach_device(struct pci_dev *dev);
-extern int pci_proc_detach_device(struct pci_dev *dev);
-extern int pci_proc_detach_bus(struct pci_bus *bus);
+int pci_proc_attach_device(struct pci_dev *dev);
+int pci_proc_detach_device(struct pci_dev *dev);
+int pci_proc_detach_bus(struct pci_bus *bus);
 #else
 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
@@ -118,8 +117,8 @@ static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
 int pci_hp_add_bridge(struct pci_dev *dev);
 
 #ifdef HAVE_PCI_LEGACY
-extern void pci_create_legacy_files(struct pci_bus *bus);
-extern void pci_remove_legacy_files(struct pci_bus *bus);
+void pci_create_legacy_files(struct pci_bus *bus);
+void pci_remove_legacy_files(struct pci_bus *bus);
 #else
 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
@@ -134,7 +133,7 @@ extern unsigned int pci_pm_d3_delay;
 
 #ifdef CONFIG_PCI_MSI
 void pci_no_msi(void);
-extern void pci_msi_init_pci_dev(struct pci_dev *dev);
+void pci_msi_init_pci_dev(struct pci_dev *dev);
 #else
 static inline void pci_no_msi(void) { }
 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
@@ -198,12 +197,11 @@ enum pci_bar_type {
 
 bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
                                 int crs_timeout);
-extern int pci_setup_device(struct pci_dev *dev);
-extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
-                                struct resource *res, unsigned int reg);
-extern int pci_resource_bar(struct pci_dev *dev, int resno,
-                            enum pci_bar_type *type);
-extern void pci_configure_ari(struct pci_dev *dev);
+int pci_setup_device(struct pci_dev *dev);
+int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
+                    struct resource *res, unsigned int reg);
+int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
+void pci_configure_ari(struct pci_dev *dev);
 
 /**
  * pci_ari_enabled - query ARI forwarding status
@@ -217,7 +215,7 @@ static inline int pci_ari_enabled(struct pci_bus *bus)
 }
 
 void pci_reassigndev_resource_alignment(struct pci_dev *dev);
-extern void pci_disable_bridge_window(struct pci_dev *dev);
+void pci_disable_bridge_window(struct pci_dev *dev);
 
 /* Single Root I/O Virtualization */
 struct pci_sriov {
@@ -241,7 +239,7 @@ struct pci_sriov {
 };
 
 #ifdef CONFIG_PCI_ATS
-extern void pci_restore_ats_state(struct pci_dev *dev);
+void pci_restore_ats_state(struct pci_dev *dev);
 #else
 static inline void pci_restore_ats_state(struct pci_dev *dev)
 {
@@ -249,14 +247,13 @@ static inline void pci_restore_ats_state(struct pci_dev *dev)
 #endif /* CONFIG_PCI_ATS */
 
 #ifdef CONFIG_PCI_IOV
-extern int pci_iov_init(struct pci_dev *dev);
-extern void pci_iov_release(struct pci_dev *dev);
-extern int pci_iov_resource_bar(struct pci_dev *dev, int resno,
-                                enum pci_bar_type *type);
-extern resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev,
-                                                    int resno);
-extern void pci_restore_iov_state(struct pci_dev *dev);
-extern int pci_iov_bus_range(struct pci_bus *bus);
+int pci_iov_init(struct pci_dev *dev);
+void pci_iov_release(struct pci_dev *dev);
+int pci_iov_resource_bar(struct pci_dev *dev, int resno,
+                         enum pci_bar_type *type);
+resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
+void pci_restore_iov_state(struct pci_dev *dev);
+int pci_iov_bus_range(struct pci_bus *bus);
 
 #else
 static inline int pci_iov_init(struct pci_dev *dev)
@@ -282,10 +279,10 @@ static inline int pci_iov_bus_range(struct pci_bus *bus)
 
 #endif /* CONFIG_PCI_IOV */
 
-extern unsigned long pci_cardbus_resource_alignment(struct resource *);
+unsigned long pci_cardbus_resource_alignment(struct resource *);
 
 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
-                                         struct resource *res)
+                                                     struct resource *res)
 {
 #ifdef CONFIG_PCI_IOV
         int resno = res - dev->resource;
@@ -298,7 +295,7 @@ static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
         return resource_alignment(res);
 }
 
-extern void pci_enable_acs(struct pci_dev *dev);
+void pci_enable_acs(struct pci_dev *dev);
 
 struct pci_dev_reset_methods {
         u16 vendor;
@@ -307,7 +304,7 @@ struct pci_dev_reset_methods {
 };
 
 #ifdef CONFIG_PCI_QUIRKS
-extern int pci_dev_specific_reset(struct pci_dev *dev, int probe);
+int pci_dev_specific_reset(struct pci_dev *dev, int probe);
 #else
 static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
 {
diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig
index fde4a32a0295..569f82fc9e22 100644
--- a/drivers/pci/pcie/Kconfig
+++ b/drivers/pci/pcie/Kconfig
@@ -82,4 +82,4 @@ endchoice
 
 config PCIE_PME
         def_bool y
-        depends on PCIEPORTBUS && PM_RUNTIME && ACPI
+        depends on PCIEPORTBUS && PM_RUNTIME
diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c
index 4e24cb8a94ae..587e7e853107 100644
--- a/drivers/pci/pcie/aer/aer_inject.c
+++ b/drivers/pci/pcie/aer/aer_inject.c
@@ -212,8 +212,8 @@ out:
         return ops->read(bus, devfn, where, size, val);
 }
 
-int pci_write_aer(struct pci_bus *bus, unsigned int devfn, int where, int size,
-                  u32 val)
+static int pci_write_aer(struct pci_bus *bus, unsigned int devfn, int where,
+                         int size, u32 val)
 {
         u32 *sim;
         struct aer_error *err;
@@ -334,13 +334,13 @@ static int aer_inject(struct aer_error_inj *einj)
                 return -ENODEV;
         rpdev = pcie_find_root_port(dev);
         if (!rpdev) {
-                ret = -ENOTTY;
+                ret = -ENODEV;
                 goto out_put;
         }
 
         pos_cap_err = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
         if (!pos_cap_err) {
-                ret = -ENOTTY;
+                ret = -EPERM;
                 goto out_put;
         }
         pci_read_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_SEVER, &sever);
@@ -350,7 +350,7 @@ static int aer_inject(struct aer_error_inj *einj)
 
         rp_pos_cap_err = pci_find_ext_capability(rpdev, PCI_EXT_CAP_ID_ERR);
         if (!rp_pos_cap_err) {
-                ret = -ENOTTY;
+                ret = -EPERM;
                 goto out_put;
         }
 
diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
index 22f840f4dda1..d12c77cd6991 100644
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ b/drivers/pci/pcie/aer/aerdrv.h
@@ -110,15 +110,15 @@ static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
 }
 
 extern struct bus_type pcie_port_bus_type;
-extern void aer_do_secondary_bus_reset(struct pci_dev *dev);
-extern int aer_init(struct pcie_device *dev);
-extern void aer_isr(struct work_struct *work);
-extern void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
-extern void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info);
-extern irqreturn_t aer_irq(int irq, void *context);
+void aer_do_secondary_bus_reset(struct pci_dev *dev);
+int aer_init(struct pcie_device *dev);
+void aer_isr(struct work_struct *work);
+void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
+void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info);
+irqreturn_t aer_irq(int irq, void *context);
 
 #ifdef CONFIG_ACPI_APEI
-extern int pcie_aer_get_firmware_first(struct pci_dev *pci_dev);
+int pcie_aer_get_firmware_first(struct pci_dev *pci_dev);
 #else
 static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev)
 {
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index 564d97f94b6c..8ec8b4f48560 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -89,8 +89,6 @@ static int add_error_device(struct aer_err_info *e_info, struct pci_dev *dev)
         return -ENOSPC;
 }
 
-#define PCI_BUS(x)      (((x) >> 8) & 0xff)
-
 /**
  * is_error_source - check whether the device is source of reported error
  * @dev: pointer to pci_dev to be checked
@@ -106,7 +104,7 @@ static bool is_error_source(struct pci_dev *dev, struct aer_err_info *e_info)
          * When bus id is equal to 0, it might be a bad id
          * reported by root port.
          */
-        if (!nosourceid && (PCI_BUS(e_info->id) != 0)) {
+        if (!nosourceid && (PCI_BUS_NUM(e_info->id) != 0)) {
                 /* Device ID match? */
                 if (e_info->id == ((dev->bus->number << 8) | dev->devfn))
                         return true;
diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c
index 9ca0dc9ffd84..795db1f9d50c 100644
--- a/drivers/pci/pcie/pme.c
+++ b/drivers/pci/pcie/pme.c
@@ -19,8 +19,6 @@
 #include <linux/interrupt.h>
 #include <linux/device.h>
 #include <linux/pcieport_if.h>
-#include <linux/acpi.h>
-#include <linux/pci-acpi.h>
 #include <linux/pm_runtime.h>
 
 #include "../pci.h"
diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
index eea2ca2375e6..d2eb80aab569 100644
--- a/drivers/pci/pcie/portdrv.h
+++ b/drivers/pci/pcie/portdrv.h
@@ -21,18 +21,18 @@
 #define get_descriptor_id(type, service) (((type - 4) << 4) | service)
 
 extern struct bus_type pcie_port_bus_type;
-extern int pcie_port_device_register(struct pci_dev *dev);
+int pcie_port_device_register(struct pci_dev *dev);
 #ifdef CONFIG_PM
-extern int pcie_port_device_suspend(struct device *dev);
-extern int pcie_port_device_resume(struct device *dev);
+int pcie_port_device_suspend(struct device *dev);
+int pcie_port_device_resume(struct device *dev);
 #endif
-extern void pcie_port_device_remove(struct pci_dev *dev);
-extern int __must_check pcie_port_bus_register(void);
-extern void pcie_port_bus_unregister(void);
+void pcie_port_device_remove(struct pci_dev *dev);
+int __must_check pcie_port_bus_register(void);
+void pcie_port_bus_unregister(void);
 
 struct pci_dev;
 
-extern void pcie_clear_root_pme_status(struct pci_dev *dev);
+void pcie_clear_root_pme_status(struct pci_dev *dev);
 
 #ifdef CONFIG_HOTPLUG_PCI_PCIE
 extern bool pciehp_msi_disabled;
@@ -59,7 +59,7 @@ static inline bool pcie_pme_no_msi(void)
         return pcie_pme_msi_disabled;
 }
 
-extern void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable);
+void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable);
 #else /* !CONFIG_PCIE_PME */
 static inline void pcie_pme_disable_msi(void) {}
 static inline bool pcie_pme_no_msi(void) { return false; }
@@ -67,7 +67,7 @@ static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
 #endif /* !CONFIG_PCIE_PME */
 
 #ifdef CONFIG_ACPI
-extern int pcie_port_acpi_setup(struct pci_dev *port, int *mask);
+int pcie_port_acpi_setup(struct pci_dev *port, int *mask);
 
 static inline int pcie_port_platform_notify(struct pci_dev *port, int *mask)
 {
diff --git a/drivers/pci/pcie/portdrv_acpi.c b/drivers/pci/pcie/portdrv_acpi.c
index a86b56e5f2f2..b4d2894ee3fc 100644
--- a/drivers/pci/pcie/portdrv_acpi.c
+++ b/drivers/pci/pcie/portdrv_acpi.c
@@ -17,6 +17,7 @@
 
 #include "aer/aerdrv.h"
 #include "../pci.h"
+#include "portdrv.h"
 
 /**
  * pcie_port_acpi_setup - Request the BIOS to release control of PCIe services.
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index ed4d09498337..696caed5fdf5 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -259,11 +259,9 @@ static pci_ers_result_t pcie_portdrv_error_detected(struct pci_dev *dev,
                                         enum pci_channel_state error)
 {
         struct aer_broadcast_data data = {error, PCI_ERS_RESULT_CAN_RECOVER};
-        int ret;
-
-        /* can not fail */
-        ret = device_for_each_child(&dev->dev, &data, error_detected_iter);
 
+        /* get true return value from &data */
+        device_for_each_child(&dev->dev, &data, error_detected_iter);
         return data.result;
 }
 
@@ -295,10 +293,9 @@ static int mmio_enabled_iter(struct device *device, void *data)
 static pci_ers_result_t pcie_portdrv_mmio_enabled(struct pci_dev *dev)
 {
         pci_ers_result_t status = PCI_ERS_RESULT_RECOVERED;
-        int retval;
 
         /* get true return value from &status */
-        retval = device_for_each_child(&dev->dev, &status, mmio_enabled_iter);
+        device_for_each_child(&dev->dev, &status, mmio_enabled_iter);
         return status;
 }
 
@@ -330,7 +327,6 @@ static int slot_reset_iter(struct device *device, void *data)
 static pci_ers_result_t pcie_portdrv_slot_reset(struct pci_dev *dev)
 {
         pci_ers_result_t status = PCI_ERS_RESULT_RECOVERED;
-        int retval;
 
         /* If fatal, restore cfg space for possible link reset at upstream */
         if (dev->error_state == pci_channel_io_frozen) {
@@ -341,8 +337,7 @@ static pci_ers_result_t pcie_portdrv_slot_reset(struct pci_dev *dev)
         }
 
         /* get true return value from &status */
-        retval = device_for_each_child(&dev->dev, &status, slot_reset_iter);
-
+        device_for_each_child(&dev->dev, &status, slot_reset_iter);
         return status;
 }
 
@@ -368,9 +363,7 @@ static int resume_iter(struct device *device, void *data)
 
 static void pcie_portdrv_err_resume(struct pci_dev *dev)
 {
-        int retval;
-        /* nothing to do with error value, if it ever happens */
-        retval = device_for_each_child(&dev->dev, NULL, resume_iter);
+        device_for_each_child(&dev->dev, NULL, resume_iter);
 }
 
 /*
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index b494066ef32f..43ece5d41d36 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -673,6 +673,8 @@ add_dev:
         ret = device_register(&child->dev);
         WARN_ON(ret < 0);
 
+        pcibios_add_bus(child);
+
         /* Create legacy_io and legacy_mem files for this bus */
         pci_create_legacy_files(child);
 
@@ -1627,8 +1629,7 @@ unsigned int pci_scan_child_bus(struct pci_bus *bus)
         if (!bus->is_added) {
                 dev_dbg(&bus->dev, "fixups for bus\n");
                 pcibios_fixup_bus(bus);
-                if (pci_is_root_bus(bus))
-                        bus->is_added = 1;
+                bus->is_added = 1;
         }
 
         for (pass=0; pass < 2; pass++)
@@ -1661,6 +1662,14 @@ int __weak pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
         return 0;
 }
 
+void __weak pcibios_add_bus(struct pci_bus *bus)
+{
+}
+
+void __weak pcibios_remove_bus(struct pci_bus *bus)
+{
+}
+
 struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
                 struct pci_ops *ops, void *sysdata, struct list_head *resources)
 {
@@ -1715,6 +1724,8 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
         if (error)
                 goto class_dev_reg_err;
 
+        pcibios_add_bus(b);
+
         /* Create legacy_io and legacy_mem files for this bus */
         pci_create_legacy_files(b);
 
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 0369fb6fc1da..7d68aeebf56b 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -324,29 +324,30 @@ static void quirk_cs5536_vsa(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
 
-static void quirk_io_region(struct pci_dev *dev, unsigned region,
-        unsigned size, int nr, const char *name)
+static void quirk_io_region(struct pci_dev *dev, int port,
+                                unsigned size, int nr, const char *name)
 {
-        region &= ~(size-1);
-        if (region) {
-                struct pci_bus_region bus_region;
-                struct resource *res = dev->resource + nr;
+        u16 region;
+        struct pci_bus_region bus_region;
+        struct resource *res = dev->resource + nr;
 
-                res->name = pci_name(dev);
-                res->start = region;
-                res->end = region + size - 1;
-                res->flags = IORESOURCE_IO;
+        pci_read_config_word(dev, port, &region);
+        region &= ~(size - 1);
 
-                /* Convert from PCI bus to resource space.  */
-                bus_region.start = res->start;
-                bus_region.end = res->end;
-                pcibios_bus_to_resource(dev, res, &bus_region);
+        if (!region)
+                return;
 
-                if (pci_claim_resource(dev, nr) == 0)
-                        dev_info(&dev->dev, "quirk: %pR claimed by %s\n",
-                                 res, name);
-        }
-}       
+        res->name = pci_name(dev);
+        res->flags = IORESOURCE_IO;
+
+        /* Convert from PCI bus to resource space */
+        bus_region.start = region;
+        bus_region.end = region + size - 1;
+        pcibios_bus_to_resource(dev, res, &bus_region);
+
+        if (!pci_claim_resource(dev, nr))
+                dev_info(&dev->dev, "quirk: %pR claimed by %s\n", res, name);
+}
 
 /*
  *      ATI Northbridge setups MCE the processor if you even
@@ -374,12 +375,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI,	PCI_DEVICE_ID_ATI_RS100,   quirk_ati_
  */
 static void quirk_ali7101_acpi(struct pci_dev *dev)
 {
-        u16 region;
-
-        pci_read_config_word(dev, 0xE0, &region);
-        quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
-        pci_read_config_word(dev, 0xE2, &region);
-        quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
+        quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
+        quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL,      PCI_DEVICE_ID_AL_M7101,         quirk_ali7101_acpi);
 
@@ -442,12 +439,10 @@ static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int
  */
 static void quirk_piix4_acpi(struct pci_dev *dev)
 {
-        u32 region, res_a;
+        u32 res_a;
 
-        pci_read_config_dword(dev, 0x40, &region);
-        quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
-        pci_read_config_dword(dev, 0x90, &region);
-        quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
+        quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
+        quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
 
         /* Device resource A has enables for some of the other ones */
         pci_read_config_dword(dev, 0x5c, &res_a);
@@ -491,7 +486,6 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82443MX_3,	qui
  */
 static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
 {
-        u32 region;
         u8 enable;
 
         /*
@@ -503,22 +497,14 @@ static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
         */
 
         pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
-        if (enable & ICH4_ACPI_EN) {
-                pci_read_config_dword(dev, ICH_PMBASE, &region);
-                region &= PCI_BASE_ADDRESS_IO_MASK;
-                if (region >= PCIBIOS_MIN_IO)
-                        quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES,
-                                        "ICH4 ACPI/GPIO/TCO");
-        }
+        if (enable & ICH4_ACPI_EN)
+                quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
+                                 "ICH4 ACPI/GPIO/TCO");
 
         pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
-        if (enable & ICH4_GPIO_EN) {
-                pci_read_config_dword(dev, ICH4_GPIOBASE, &region);
-                region &= PCI_BASE_ADDRESS_IO_MASK;
-                if (region >= PCIBIOS_MIN_IO)
-                        quirk_io_region(dev, region, 64,
-                                        PCI_BRIDGE_RESOURCES + 1, "ICH4 GPIO");
-        }
+        if (enable & ICH4_GPIO_EN)
+                quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
+                                "ICH4 GPIO");
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801AA_0,         quirk_ich4_lpc_acpi);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801AB_0,         quirk_ich4_lpc_acpi);
@@ -533,26 +519,17 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_ESB_1,		qui
 
 static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
 {
-        u32 region;
         u8 enable;
 
         pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
-        if (enable & ICH6_ACPI_EN) {
-                pci_read_config_dword(dev, ICH_PMBASE, &region);
-                region &= PCI_BASE_ADDRESS_IO_MASK;
-                if (region >= PCIBIOS_MIN_IO)
-                        quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES,
-                                        "ICH6 ACPI/GPIO/TCO");
-        }
+        if (enable & ICH6_ACPI_EN)
+                quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
+                                 "ICH6 ACPI/GPIO/TCO");
 
         pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
-        if (enable & ICH6_GPIO_EN) {
-                pci_read_config_dword(dev, ICH6_GPIOBASE, &region);
-                region &= PCI_BASE_ADDRESS_IO_MASK;
-                if (region >= PCIBIOS_MIN_IO)
-                        quirk_io_region(dev, region, 64,
-                                        PCI_BRIDGE_RESOURCES + 1, "ICH6 GPIO");
-        }
+        if (enable & ICH6_GPIO_EN)
+                quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
+                                "ICH6 GPIO");
 }
 
 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
@@ -650,13 +627,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH10_1, qui
  */
 static void quirk_vt82c586_acpi(struct pci_dev *dev)
 {
-        u32 region;
-
-        if (dev->revision & 0x10) {
-                pci_read_config_dword(dev, 0x48, &region);
-                region &= PCI_BASE_ADDRESS_IO_MASK;
-                quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
-        }
+        if (dev->revision & 0x10)
+                quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
+                                "vt82c586 ACPI");
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_82C586_3,     quirk_vt82c586_acpi);
 
@@ -668,18 +641,12 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_3,	quirk_vt
  */
 static void quirk_vt82c686_acpi(struct pci_dev *dev)
 {
-        u16 hm;
-        u32 smb;
-
         quirk_vt82c586_acpi(dev);
 
-        pci_read_config_word(dev, 0x70, &hm);
-        hm &= PCI_BASE_ADDRESS_IO_MASK;
-        quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
+        quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
+                                 "vt82c686 HW-mon");
 
-        pci_read_config_dword(dev, 0x90, &smb);
-        smb &= PCI_BASE_ADDRESS_IO_MASK;
-        quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
+        quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_82C686_4,     quirk_vt82c686_acpi);
 
@@ -690,15 +657,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686_4,	quirk_vt
  */
 static void quirk_vt8235_acpi(struct pci_dev *dev)
 {
-        u16 pm, smb;
-
-        pci_read_config_word(dev, 0x88, &pm);
-        pm &= PCI_BASE_ADDRESS_IO_MASK;
-        quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
-
-        pci_read_config_word(dev, 0xd0, &smb);
-        smb &= PCI_BASE_ADDRESS_IO_MASK;
-        quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
+        quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
+        quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
 
@@ -2594,6 +2554,14 @@ static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
                 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
         pci_dev_put(p);
 }
+static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
+{
+        /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
+        if (dev->revision < 0x18) {
+                dev_info(&dev->dev, "set MSI_INTX_DISABLE_BUG flag\n");
+                dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
+        }
+}
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
                         PCI_DEVICE_ID_TIGON3_5780,
                         quirk_msi_intx_disable_bug);
@@ -2643,6 +2611,16 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
                         quirk_msi_intx_disable_bug);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
                         quirk_msi_intx_disable_bug);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
+                        quirk_msi_intx_disable_qca_bug);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
+                        quirk_msi_intx_disable_qca_bug);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
+                        quirk_msi_intx_disable_qca_bug);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
+                        quirk_msi_intx_disable_qca_bug);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
+                        quirk_msi_intx_disable_qca_bug);
 #endif /* CONFIG_PCI_MSI */
 
 /* Allow manual resource allocation for PCI hotplug bridges
diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index cc875e6ed159..8fc54b7327bc 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -50,10 +50,8 @@ void pci_remove_bus(struct pci_bus *bus)
         list_del(&bus->node);
         pci_bus_release_busn_res(bus);
         up_write(&pci_bus_sem);
-        if (!bus->is_added)
-                return;
-
         pci_remove_legacy_files(bus);
+        pcibios_remove_bus(bus);
         device_unregister(&bus->dev);
 }
 EXPORT_SYMBOL(pci_remove_bus);
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 7e8739e25b9e..16abaaa1f83c 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -1044,7 +1044,7 @@ handle_done:
         ;
 }
 
-void __ref __pci_bus_size_bridges(struct pci_bus *bus,
+static void __ref __pci_bus_size_bridges(struct pci_bus *bus,
                         struct list_head *realloc_head)
 {
         struct pci_dev *dev;
@@ -1545,6 +1545,8 @@ again:
 
 enable_all:
         retval = pci_reenable_device(bridge);
+        if (retval)
+                dev_err(&bridge->dev, "Error reenabling bridge (%d)\n", retval);
         pci_set_master(bridge);
         pci_enable_bridges(parent);
 }
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 81b88bda7930..07f2eddc09ce 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -261,7 +261,6 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
 {
         struct resource *res = dev->resource + resno;
         resource_size_t align, size;
-        struct pci_bus *bus;
         int ret;
 
         align = pci_resource_alignment(dev, res);
@@ -271,7 +270,6 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
                 return -EINVAL;
         }
 
-        bus = dev->bus;
         size = resource_size(res);
         ret = _pci_assign_resource(dev, resno, size, align);
 
diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c
index ac6412fb8d6f..c1e9284a677b 100644
--- a/drivers/pci/slot.c
+++ b/drivers/pci/slot.c
@@ -377,14 +377,17 @@ void pci_hp_create_module_link(struct pci_slot *pci_slot)
 {
         struct hotplug_slot *slot = pci_slot->hotplug;
         struct kobject *kobj = NULL;
-        int no_warn;
+        int ret;
 
         if (!slot || !slot->ops)
                 return;
         kobj = kset_find_obj(module_kset, slot->ops->mod_name);
         if (!kobj)
                 return;
-        no_warn = sysfs_create_link(&pci_slot->kobj, kobj, "module");
+        ret = sysfs_create_link(&pci_slot->kobj, kobj, "module");
+        if (ret)
+                dev_err(&pci_slot->bus->dev, "Error creating sysfs link (%d)\n",
+                        ret);
         kobject_put(kobj);
 }
 EXPORT_SYMBOL_GPL(pci_hp_create_module_link);