Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (49 commits)
  [PATCH] acpiphp: fix acpi_path_name
  [PATCH] ibmphp: remove TRUE and FALSE
  [PATCH] PCI Hotplug: add common acpi functions to core
  [PATCH] PCI: kzalloc() conversion in drivers/pci
  [PATCH] acpiphp: Scan slots under the nested P2P bridge
  [PATCH] PCI Hotplug: SN: Fix cleanup on hotplug removal of PPB
  [PATCH] shpchp: cleanup bus speed handling
  [PATCH] PCI: fix pci_request_region[s] arg
  [PATCH] PCI: Provide a boot parameter to disable MSI
  [PATCH] PCI: the scheduled removal of PCI_LEGACY_PROC
  [PATCH] PCI: cpqphp_ctrl.c: board_replaced(): remove dead code
  [PATCH] acpiphp: fix bridge handle
  [PATCH] acpiphp - slot management fix - V4
  [PATCH] acpi: remove dock event handling from ibm_acpi
  [PATCH] acpiphp: add dock event handling
  [PATCH] acpi: export acpi_bus_trim
  [PATCH] acpiphp: add new bus to acpi
  [PATCH] PCI: Move pci_dev_put outside a spinlock
  [PATCH] PCI: PCI/Cardbus cards hidden, needs pci=assign-busses to fix
  [PATCH] PCI: fix problems with MSI-X on ia64
  ...

47 files changed, 2069 insertions, 2520 deletions

diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index f187fd8aeed6..4d762fc4878c 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -11,24 +11,11 @@ config PCI_MSI
 	   generate an interrupt using an inbound Memory Write on its
 	   PCI bus instead of asserting a device IRQ pin.
 
-	   If you don't know what to do here, say N.
-
-config PCI_LEGACY_PROC
-	bool "Legacy /proc/pci interface"
-	depends on PCI
-	---help---
-	  This feature enables a procfs file -- /proc/pci -- that provides a 
-	  summary of PCI devices in the system. 
-
-	  This feature has been deprecated as of v2.5.53, in favor of using the 
-	  tool lspci(8). This feature may be removed at a future date. 
+	   Use of PCI MSI interrupts can be disabled at kernel boot time
+	   by using the 'pci=nomsi' option.  This disables MSI for the
+	   entire system.
 
-	  lspci can provide the same data, as well as much more. lspci is a part of
-	  the pci-utils package, which should be installed by your distribution. 
-	  See <file:Documentation/Changes> for information on where to get the latest
-	  version. 
-
-	  When in doubt, say N.
+	   If you don't know what to do here, say N.
 
 config PCI_DEBUG
 	bool "PCI Debugging"
diff --git a/drivers/pci/hotplug/Makefile b/drivers/pci/hotplug/Makefile
index 3c71e3077ff1..421cfffb1756 100644
--- a/drivers/pci/hotplug/Makefile
+++ b/drivers/pci/hotplug/Makefile
@@ -22,6 +22,9 @@ ifdef CONFIG_HOTPLUG_PCI_CPCI
 pci_hotplug-objs	+=	cpci_hotplug_core.o	\
 				cpci_hotplug_pci.o
 endif
+ifdef CONFIG_ACPI
+pci_hotplug-objs 	+= 	acpi_pcihp.o
+endif
 
 cpqphp-objs		:=	cpqphp_core.o	\
 				cpqphp_ctrl.o	\
@@ -37,7 +40,8 @@ ibmphp-objs		:=	ibmphp_core.o	\
 				ibmphp_hpc.o
 
 acpiphp-objs		:=	acpiphp_core.o	\
-				acpiphp_glue.o
+				acpiphp_glue.o  \
+				acpiphp_dock.o
 
 rpaphp-objs		:=	rpaphp_core.o	\
 				rpaphp_pci.o	\
@@ -50,23 +54,9 @@ pciehp-objs		:=	pciehp_core.o	\
 				pciehp_ctrl.o	\
 				pciehp_pci.o	\
 				pciehp_hpc.o
-ifdef CONFIG_ACPI
-	pciehp-objs += pciehprm_acpi.o
-else
-	pciehp-objs += pciehprm_nonacpi.o
-endif
 
 shpchp-objs		:=	shpchp_core.o	\
 				shpchp_ctrl.o	\
 				shpchp_pci.o	\
 				shpchp_sysfs.o	\
 				shpchp_hpc.o
-ifdef CONFIG_ACPI
-	shpchp-objs += shpchprm_acpi.o
-else
-	ifdef CONFIG_HOTPLUG_PCI_SHPC_PHPRM_LEGACY
-		shpchp-objs += shpchprm_legacy.o
-	else
-		shpchp-objs += shpchprm_nonacpi.o
-	endif
-endif
diff --git a/drivers/pci/hotplug/shpchprm_acpi.c b/drivers/pci/hotplug/acpi_pcihp.c
index 17145e52223a..39af9c325f35 100644
--- a/drivers/pci/hotplug/shpchprm_acpi.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -1,7 +1,7 @@
 /*
- * SHPCHPRM ACPI: PHP Resource Manager for ACPI platform
+ * Common ACPI functions for hot plug platforms
  *
- * Copyright (C) 2003-2004 Intel Corporation
+ * Copyright (C) 2006 Intel Corporation
  *
  * All rights reserved.
  *
@@ -31,26 +31,12 @@
 #include <acpi/acpi.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/actypes.h>
-#include "shpchp.h"
+#include "pci_hotplug.h"
 
 #define	METHOD_NAME__SUN	"_SUN"
 #define	METHOD_NAME__HPP	"_HPP"
 #define	METHOD_NAME_OSHP	"OSHP"
 
-static u8 * acpi_path_name( acpi_handle	handle)
-{
-	acpi_status		status;
-	static u8	path_name[ACPI_PATHNAME_MAX];
-	struct acpi_buffer		ret_buf = { ACPI_PATHNAME_MAX, path_name };
-
-	memset(path_name, 0, sizeof (path_name));
-	status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &ret_buf);
-
-	if (ACPI_FAILURE(status))
-		return NULL;
-	else
-		return path_name;	
-}
 
 static acpi_status
 acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
@@ -58,18 +44,21 @@ acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
 	acpi_status		status;
 	u8			nui[4];
 	struct acpi_buffer	ret_buf = { 0, NULL};
+	struct acpi_buffer	string = { ACPI_ALLOCATE_BUFFER, NULL };
 	union acpi_object	*ext_obj, *package;
-	u8			*path_name = acpi_path_name(handle);
 	int			i, len = 0;
 
+	acpi_get_name(handle, ACPI_FULL_PATHNAME, &string);
+
 	/* get _hpp */
 	status = acpi_evaluate_object(handle, METHOD_NAME__HPP, NULL, &ret_buf);
 	switch (status) {
 	case AE_BUFFER_OVERFLOW:
 		ret_buf.pointer = kmalloc (ret_buf.length, GFP_KERNEL);
 		if (!ret_buf.pointer) {
-			err ("%s:%s alloc for _HPP fail\n", __FUNCTION__,
-					path_name);
+			printk(KERN_ERR "%s:%s alloc for _HPP fail\n",
+				__FUNCTION__, (char *)string.pointer);
+			acpi_os_free(string.pointer);
 			return AE_NO_MEMORY;
 		}
 		status = acpi_evaluate_object(handle, METHOD_NAME__HPP,
@@ -78,16 +67,17 @@ acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
 			break;
 	default:
 		if (ACPI_FAILURE(status)) {
-			dbg("%s:%s _HPP fail=0x%x\n", __FUNCTION__,
-					path_name, status);
+			pr_debug("%s:%s _HPP fail=0x%x\n", __FUNCTION__,
+				(char *)string.pointer, status);
+			acpi_os_free(string.pointer);
 			return status;
 		}
 	}
 
 	ext_obj = (union acpi_object *) ret_buf.pointer;
 	if (ext_obj->type != ACPI_TYPE_PACKAGE) {
-		err ("%s:%s _HPP obj not a package\n", __FUNCTION__,
-				path_name);
+		printk(KERN_ERR "%s:%s _HPP obj not a package\n", __FUNCTION__,
+				(char *)string.pointer);
 		status = AE_ERROR;
 		goto free_and_return;
 	}
@@ -101,8 +91,8 @@ acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
 			nui[i] = (u8)ext_obj->integer.value;
 			break;
 		default:
-			err ("%s:%s _HPP obj type incorrect\n", __FUNCTION__,
-					path_name);
+			printk(KERN_ERR "%s:%s _HPP obj type incorrect\n",
+				__FUNCTION__, (char *)string.pointer);
 			status = AE_ERROR;
 			goto free_and_return;
 		}
@@ -113,54 +103,52 @@ acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
 	hpp->enable_serr = nui[2];
 	hpp->enable_perr = nui[3];
 
-	dbg("  _HPP: cache_line_size=0x%x\n", hpp->cache_line_size);
-	dbg("  _HPP: latency timer  =0x%x\n", hpp->latency_timer);
-	dbg("  _HPP: enable SERR    =0x%x\n", hpp->enable_serr);
-	dbg("  _HPP: enable PERR    =0x%x\n", hpp->enable_perr);
+	pr_debug("  _HPP: cache_line_size=0x%x\n", hpp->cache_line_size);
+	pr_debug("  _HPP: latency timer  =0x%x\n", hpp->latency_timer);
+	pr_debug("  _HPP: enable SERR    =0x%x\n", hpp->enable_serr);
+	pr_debug("  _HPP: enable PERR    =0x%x\n", hpp->enable_perr);
 
 free_and_return:
-	kfree(ret_buf.pointer);
+	acpi_os_free(string.pointer);
+	acpi_os_free(ret_buf.pointer);
 	return status;
 }
 
-static void acpi_run_oshp(acpi_handle handle)
+
+
+/* acpi_run_oshp - get control of hotplug from the firmware
+ *
+ * @handle - the handle of the hotplug controller.
+ */
+acpi_status acpi_run_oshp(acpi_handle handle)
 {
 	acpi_status		status;
-	u8			*path_name = acpi_path_name(handle);
+	struct acpi_buffer	string = { ACPI_ALLOCATE_BUFFER, NULL };
+
+	acpi_get_name(handle, ACPI_FULL_PATHNAME, &string);
 
 	/* run OSHP */
 	status = acpi_evaluate_object(handle, METHOD_NAME_OSHP, NULL, NULL);
-	if (ACPI_FAILURE(status)) {
-		err("%s:%s OSHP fails=0x%x\n", __FUNCTION__, path_name,
-				status);
-	} else {
-		dbg("%s:%s OSHP passes\n", __FUNCTION__, path_name);
-	}
-}
-
-int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum)
-{
-	int offset = devnum - ctrl->slot_device_offset;
+	if (ACPI_FAILURE(status))
+		printk(KERN_ERR "%s:%s OSHP fails=0x%x\n", __FUNCTION__,
+			(char *)string.pointer, status);
+	else
+		pr_debug("%s:%s OSHP passes\n", __FUNCTION__,
+			(char *)string.pointer);
 
-	dbg("%s: ctrl->slot_num_inc %d, offset %d\n", __FUNCTION__, ctrl->slot_num_inc, offset);
-	*sun = (u8) (ctrl->first_slot + ctrl->slot_num_inc *offset);
-	return 0;
+	acpi_os_free(string.pointer);
+	return status;
 }
+EXPORT_SYMBOL_GPL(acpi_run_oshp);
+
 
-void get_hp_hw_control_from_firmware(struct pci_dev *dev)
-{
-	/*
-	 * OSHP is an optional ACPI firmware control method. If present,
-	 * we need to run it to inform BIOS that we will control SHPC
-	 * hardware from now on.
-	 */
-	acpi_handle handle = DEVICE_ACPI_HANDLE(&(dev->dev));
-	if (!handle)
-		return;
-	acpi_run_oshp(handle);
-}
 
-void get_hp_params_from_firmware(struct pci_dev *dev,
+/* acpi_get_hp_params_from_firmware
+ *
+ * @dev - the pci_dev of the newly added device
+ * @hpp - allocated by the caller
+ */
+acpi_status acpi_get_hp_params_from_firmware(struct pci_dev *dev,
 		struct hotplug_params *hpp)
 {
 	acpi_status status = AE_NOT_FOUND;
@@ -182,5 +170,42 @@ void get_hp_params_from_firmware(struct pci_dev *dev,
 		/* Check if a parent object supports _HPP */
 		pdev = pdev->bus->parent->self;
 	}
+	return status;
 }
+EXPORT_SYMBOL_GPL(acpi_get_hp_params_from_firmware);
 
+
+/* acpi_root_bridge - check to see if this acpi object is a root bridge
+ *
+ * @handle - the acpi object in question.
+ */
+int acpi_root_bridge(acpi_handle handle)
+{
+	acpi_status status;
+	struct acpi_device_info *info;
+	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+	int i;
+
+	status = acpi_get_object_info(handle, &buffer);
+	if (ACPI_SUCCESS(status)) {
+		info = buffer.pointer;
+		if ((info->valid & ACPI_VALID_HID) &&
+			!strcmp(PCI_ROOT_HID_STRING,
+					info->hardware_id.value)) {
+			acpi_os_free(buffer.pointer);
+			return 1;
+		}
+		if (info->valid & ACPI_VALID_CID) {
+			for (i=0; i < info->compatibility_id.count; i++) {
+				if (!strcmp(PCI_ROOT_HID_STRING,
+					info->compatibility_id.id[i].value)) {
+					acpi_os_free(buffer.pointer);
+					return 1;
+				}
+			}
+		}
+		acpi_os_free(buffer.pointer);
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_root_bridge);
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h
index 293603e1b7c3..467ac70a46ff 100644
--- a/drivers/pci/hotplug/acpiphp.h
+++ b/drivers/pci/hotplug/acpiphp.h
@@ -37,6 +37,7 @@
 
 #include <linux/acpi.h>
 #include <linux/kobject.h>	/* for KOBJ_NAME_LEN */
+#include <linux/mutex.h>
 #include "pci_hotplug.h"
 
 #define dbg(format, arg...)					\
@@ -59,26 +60,10 @@ struct acpiphp_slot;
  * struct slot - slot information for each *physical* slot
  */
 struct slot {
-	u8 number;
 	struct hotplug_slot	*hotplug_slot;
-	struct list_head	slot_list;
-
 	struct acpiphp_slot	*acpi_slot;
 };
 
-/**
- * struct hpp_param - ACPI 2.0 _HPP Hot Plug Parameters
- * @cache_line_size in DWORD
- * @latency_timer in PCI clock
- * @enable_SERR 0 or 1
- * @enable_PERR 0 or 1
- */
-struct hpp_param {
-	u8 cache_line_size;
-	u8 latency_timer;
-	u8 enable_SERR;
-	u8 enable_PERR;
-};
 
 
 /**
@@ -102,7 +87,7 @@ struct acpiphp_bridge {
 	struct pci_dev *pci_dev;
 
 	/* ACPI 2.0 _HPP parameters */
-	struct hpp_param hpp;
+	struct hotplug_params hpp;
 
 	spinlock_t res_lock;
 };
@@ -118,9 +103,9 @@ struct acpiphp_slot {
 	struct acpiphp_bridge *bridge;	/* parent */
 	struct list_head funcs;		/* one slot may have different
 					   objects (i.e. for each function) */
-	struct semaphore crit_sect;
+	struct slot *slot;
+	struct mutex crit_sect;
 
-	u32		id;		/* slot id (serial #) for hotplug core */
 	u8		device;		/* pci device# */
 
 	u32		sun;		/* ACPI _SUN (slot unique number) */
@@ -160,6 +145,25 @@ struct acpiphp_attention_info
 	struct module *owner;
 };
 
+
+struct dependent_device {
+	struct list_head device_list;
+	struct list_head pci_list;
+	acpi_handle handle;
+	struct acpiphp_func *func;
+};
+
+
+struct acpiphp_dock_station {
+	acpi_handle handle;
+	u32 last_dock_time;
+	u32 flags;
+	struct acpiphp_func *dock_bridge;
+	struct list_head dependent_devices;
+	struct list_head pci_dependent_devices;
+};
+
+
 /* PCI bus bridge HID */
 #define ACPI_PCI_HOST_HID		"PNP0A03"
 
@@ -197,19 +201,27 @@ struct acpiphp_attention_info
 #define FUNC_HAS_PS1		(0x00000020)
 #define FUNC_HAS_PS2		(0x00000040)
 #define FUNC_HAS_PS3		(0x00000080)
+#define FUNC_HAS_DCK            (0x00000100)
+#define FUNC_IS_DD              (0x00000200)
+
+/* dock station flags */
+#define DOCK_DOCKING            (0x00000001)
+#define DOCK_HAS_BRIDGE         (0x00000002)
 
 /* 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);
 
 /* acpiphp_glue.c */
 extern int acpiphp_glue_init (void);
 extern void acpiphp_glue_exit (void);
 extern int acpiphp_get_num_slots (void);
-extern struct acpiphp_slot *get_slot_from_id (int id);
 typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
+void handle_hotplug_event_func(acpi_handle, u32, void*);
 
 extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
 extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
@@ -219,6 +231,16 @@ extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
 extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
 extern u32 acpiphp_get_address (struct acpiphp_slot *slot);
 
+/* acpiphp_dock.c */
+extern int find_dock_station(void);
+extern void remove_dock_station(void);
+extern void add_dependent_device(struct dependent_device *new_dd);
+extern void add_pci_dependent_device(struct dependent_device *new_dd);
+extern struct dependent_device *get_dependent_device(acpi_handle handle);
+extern int is_dependent_device(acpi_handle handle);
+extern int detect_dependent_devices(acpi_handle *bridge_handle);
+extern struct dependent_device *alloc_dependent_device(acpi_handle handle);
+
 /* variables */
 extern int acpiphp_debug;
 
diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
index 60c4c38047a3..4f1b0da8e47e 100644
--- a/drivers/pci/hotplug/acpiphp_core.c
+++ b/drivers/pci/hotplug/acpiphp_core.c
@@ -44,8 +44,6 @@
 #include "pci_hotplug.h"
 #include "acpiphp.h"
 
-static LIST_HEAD(slot_list);
-
 #define MY_NAME	"acpiphp"
 
 static int debug;
@@ -341,62 +339,53 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 	kfree(slot);
 }
 
-/**
- * init_slots - initialize 'struct slot' structures for each slot
- *
- */
-static int __init init_slots(void)
+/* callback routine to initialize 'struct slot' for each slot */
+int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
 {
 	struct slot *slot;
+	struct hotplug_slot *hotplug_slot;
+	struct hotplug_slot_info *hotplug_slot_info;
 	int retval = -ENOMEM;
-	int i;
-
-	for (i = 0; i < num_slots; ++i) {
-		slot = kmalloc(sizeof(struct slot), GFP_KERNEL);
-		if (!slot)
-			goto error;
-		memset(slot, 0, sizeof(struct slot));
-
-		slot->hotplug_slot = kmalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
-		if (!slot->hotplug_slot)
-			goto error_slot;
-		memset(slot->hotplug_slot, 0, sizeof(struct hotplug_slot));
-
-		slot->hotplug_slot->info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
-		if (!slot->hotplug_slot->info)
-			goto error_hpslot;
-		memset(slot->hotplug_slot->info, 0, sizeof(struct hotplug_slot_info));
-
-		slot->hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
-		if (!slot->hotplug_slot->name)
-			goto error_info;
-
-		slot->number = i;
-
-		slot->hotplug_slot->private = slot;
-		slot->hotplug_slot->release = &release_slot;
-		slot->hotplug_slot->ops = &acpi_hotplug_slot_ops;
-
-		slot->acpi_slot = get_slot_from_id(i);
-		slot->hotplug_slot->info->power_status = acpiphp_get_power_status(slot->acpi_slot);
-		slot->hotplug_slot->info->attention_status = 0;
-		slot->hotplug_slot->info->latch_status = acpiphp_get_latch_status(slot->acpi_slot);
-		slot->hotplug_slot->info->adapter_status = acpiphp_get_adapter_status(slot->acpi_slot);
-		slot->hotplug_slot->info->max_bus_speed = PCI_SPEED_UNKNOWN;
-		slot->hotplug_slot->info->cur_bus_speed = PCI_SPEED_UNKNOWN;
-
-		make_slot_name(slot);
-
-		retval = pci_hp_register(slot->hotplug_slot);
-		if (retval) {
-			err("pci_hp_register failed with error %d\n", retval);
-			goto error_name;
-		}
-
-		/* add slot to our internal list */
-		list_add(&slot->slot_list, &slot_list);
-		info("Slot [%s] registered\n", slot->hotplug_slot->name);
-	}
+
+	slot = kzalloc(sizeof(*slot), GFP_KERNEL);
+	if (!slot)
+		goto error;
+
+	slot->hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
+	if (!slot->hotplug_slot)
+		goto error_slot;
+
+	slot->hotplug_slot->info = kzalloc(sizeof(*hotplug_slot_info),
+					   GFP_KERNEL);
+	if (!slot->hotplug_slot->info)
+		goto error_hpslot;
+
+	slot->hotplug_slot->name = kzalloc(SLOT_NAME_SIZE, GFP_KERNEL);
+	if (!slot->hotplug_slot->name)
+		goto error_info;
+
+	slot->hotplug_slot->private = slot;
+	slot->hotplug_slot->release = &release_slot;
+	slot->hotplug_slot->ops = &acpi_hotplug_slot_ops;
+
+	slot->acpi_slot = acpiphp_slot;
+	slot->hotplug_slot->info->power_status = acpiphp_get_power_status(slot->acpi_slot);
+	slot->hotplug_slot->info->attention_status = 0;
+	slot->hotplug_slot->info->latch_status = acpiphp_get_latch_status(slot->acpi_slot);
+	slot->hotplug_slot->info->adapter_status = acpiphp_get_adapter_status(slot->acpi_slot);
+	slot->hotplug_slot->info->max_bus_speed = PCI_SPEED_UNKNOWN;
+	slot->hotplug_slot->info->cur_bus_speed = PCI_SPEED_UNKNOWN;
+
+	acpiphp_slot->slot = slot;
+	make_slot_name(slot);
+
+	retval = pci_hp_register(slot->hotplug_slot);
+	if (retval) {
+		err("pci_hp_register failed with error %d\n", retval);
+		goto error_name;
+ 	}
+
+	info("Slot [%s] registered\n", slot->hotplug_slot->name);
 
 	return 0;
 error_name:
@@ -412,42 +401,51 @@ error:
 }
 
 
-static void __exit cleanup_slots (void)
+void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
 {
-	struct list_head *tmp, *n;
-	struct slot *slot;
+	struct slot *slot = acpiphp_slot->slot;
+	int retval = 0;
 
-	list_for_each_safe (tmp, n, &slot_list) {
-		/* memory will be freed in release_slot callback */
-		slot = list_entry(tmp, struct slot, slot_list);
-		list_del(&slot->slot_list);
-		pci_hp_deregister(slot->hotplug_slot);
-	}
+	info ("Slot [%s] unregistered\n", slot->hotplug_slot->name);
+
+	retval = pci_hp_deregister(slot->hotplug_slot);
+	if (retval)
+		err("pci_hp_deregister failed with error %d\n", retval);
 }
 
 
 static int __init acpiphp_init(void)
 {
 	int retval;
+	int docking_station;
 
 	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
 
 	acpiphp_debug = debug;
 
+	docking_station = find_dock_station();
+
 	/* read all the ACPI info from the system */
 	retval = init_acpi();
-	if (retval)
-		return retval;
 
-	return init_slots();
+	/* if we have found a docking station, we should
+	 * go ahead and load even if init_acpi has found
+	 * no slots.  This handles the case when the _DCK
+	 * method not defined under the actual dock bridge
+	 */
+	if (docking_station)
+		return 0;
+	else
+		return retval;
 }
 
 
 static void __exit acpiphp_exit(void)
 {
-	cleanup_slots();
 	/* deallocate internal data structures etc. */
 	acpiphp_glue_exit();
+
+	remove_dock_station();
 }
 
 module_init(acpiphp_init);
diff --git a/drivers/pci/hotplug/acpiphp_dock.c b/drivers/pci/hotplug/acpiphp_dock.c
new file mode 100644
index 000000000000..4f1aaf128312
--- /dev/null
+++ b/drivers/pci/hotplug/acpiphp_dock.c
@@ -0,0 +1,438 @@
+/*
+ * ACPI PCI HotPlug dock functions to ACPI CA subsystem
+ *
+ * Copyright (C) 2006 Kristen Carlson Accardi (kristen.c.accardi@intel.com)
+ * Copyright (C) 2006 Intel Corporation
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send feedback to <kristen.c.accardi@intel.com>
+ *
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/smp_lock.h>
+#include <linux/mutex.h>
+
+#include "../pci.h"
+#include "pci_hotplug.h"
+#include "acpiphp.h"
+
+static struct acpiphp_dock_station *ds;
+#define MY_NAME "acpiphp_dock"
+
+
+int is_dependent_device(acpi_handle handle)
+{
+	return (get_dependent_device(handle) ? 1 : 0);
+}
+
+
+static acpi_status
+find_dependent_device(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+	int *count = (int *)context;
+
+	if (is_dependent_device(handle)) {
+		(*count)++;
+		return AE_CTRL_TERMINATE;
+	} else {
+		return AE_OK;
+	}
+}
+
+
+
+
+void add_dependent_device(struct dependent_device *new_dd)
+{
+	list_add_tail(&new_dd->device_list, &ds->dependent_devices);
+}
+
+
+void add_pci_dependent_device(struct dependent_device *new_dd)
+{
+	list_add_tail(&new_dd->pci_list, &ds->pci_dependent_devices);
+}
+
+
+
+struct dependent_device * get_dependent_device(acpi_handle handle)
+{
+	struct dependent_device *dd;
+
+	if (!ds)
+		return NULL;
+
+	list_for_each_entry(dd, &ds->dependent_devices, device_list) {
+		if (handle == dd->handle)
+			return dd;
+	}
+	return NULL;
+}
+
+
+
+struct dependent_device *alloc_dependent_device(acpi_handle handle)
+{
+	struct dependent_device *dd;
+
+	dd = kzalloc(sizeof(*dd), GFP_KERNEL);
+	if (dd) {
+		INIT_LIST_HEAD(&dd->pci_list);
+		INIT_LIST_HEAD(&dd->device_list);
+		dd->handle = handle;
+	}
+	return dd;
+}
+
+
+
+static int is_dock(acpi_handle handle)
+{
+	acpi_status status;
+	acpi_handle tmp;
+
+	status = acpi_get_handle(handle, "_DCK", &tmp);
+	if (ACPI_FAILURE(status)) {
+		return 0;
+	}
+	return 1;
+}
+
+
+
+static int dock_present(void)
+{
+	unsigned long sta;
+	acpi_status status;
+
+	if (ds) {
+		status = acpi_evaluate_integer(ds->handle, "_STA", NULL, &sta);
+		if (ACPI_SUCCESS(status) && sta)
+			return 1;
+	}
+	return 0;
+}
+
+
+
+static void eject_dock(void)
+{
+	struct acpi_object_list arg_list;
+	union acpi_object arg;
+
+	arg_list.count = 1;
+	arg_list.pointer = &arg;
+	arg.type = ACPI_TYPE_INTEGER;
+	arg.integer.value = 1;
+
+	if (ACPI_FAILURE(acpi_evaluate_object(ds->handle, "_EJ0",
+					&arg_list, NULL)) || dock_present())
+		warn("%s: failed to eject dock!\n", __FUNCTION__);
+
+	return;
+}
+
+
+
+
+static acpi_status handle_dock(int dock)
+{
+	acpi_status status;
+	struct acpi_object_list arg_list;
+	union acpi_object arg;
+	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+
+	dbg("%s: %s\n", __FUNCTION__, dock ? "docking" : "undocking");
+
+	/* _DCK method has one argument */
+	arg_list.count = 1;
+	arg_list.pointer = &arg;
+	arg.type = ACPI_TYPE_INTEGER;
+	arg.integer.value = dock;
+	status = acpi_evaluate_object(ds->handle, "_DCK",
+					&arg_list, &buffer);
+	if (ACPI_FAILURE(status))
+		err("%s: failed to execute _DCK\n", __FUNCTION__);
+	acpi_os_free(buffer.pointer);
+
+	return status;
+}
+
+
+
+static inline void dock(void)
+{
+	handle_dock(1);
+}
+
+
+
+static inline void undock(void)
+{
+	handle_dock(0);
+}
+
+
+
+/*
+ * the _DCK method can do funny things... and sometimes not
+ * hah-hah funny.
+ *
+ * TBD - figure out a way to only call fixups for
+ * systems that require them.
+ */
+static void post_dock_fixups(void)
+{
+	struct pci_bus *bus;
+	u32 buses;
+	struct dependent_device *dd;
+
+	list_for_each_entry(dd, &ds->pci_dependent_devices, pci_list) {
+		bus = dd->func->slot->bridge->pci_bus;
+
+		/* fixup bad _DCK function that rewrites
+	 	 * secondary bridge on slot
+	 	 */
+		pci_read_config_dword(bus->self,
+				PCI_PRIMARY_BUS,
+				&buses);
+
+		if (((buses >> 8) & 0xff) != bus->secondary) {
+			buses = (buses & 0xff000000)
+	     			| ((unsigned int)(bus->primary)     <<  0)
+	     			| ((unsigned int)(bus->secondary)   <<  8)
+	     			| ((unsigned int)(bus->subordinate) << 16);
+			pci_write_config_dword(bus->self,
+					PCI_PRIMARY_BUS,
+					buses);
+		}
+	}
+}
+
+
+
+static void hotplug_pci(u32 type)
+{
+	struct dependent_device *dd;
+
+	list_for_each_entry(dd, &ds->pci_dependent_devices, pci_list)
+		handle_hotplug_event_func(dd->handle, type, dd->func);
+}
+
+
+
+static inline void begin_dock(void)
+{
+	ds->flags |= DOCK_DOCKING;
+}
+
+
+static inline void complete_dock(void)
+{
+	ds->flags &= ~(DOCK_DOCKING);
+	ds->last_dock_time = jiffies;
+}
+
+
+static int dock_in_progress(void)
+{
+	if (ds->flags & DOCK_DOCKING ||
+		ds->last_dock_time == jiffies) {
+		dbg("dock in progress\n");
+		return 1;
+	}
+	return 0;
+}
+
+
+
+static void
+handle_hotplug_event_dock(acpi_handle handle, u32 type, void *context)
+{
+	dbg("%s: enter\n", __FUNCTION__);
+
+	switch (type) {
+		case ACPI_NOTIFY_BUS_CHECK:
+			dbg("BUS Check\n");
+			if (!dock_in_progress() && dock_present()) {
+				begin_dock();
+				dock();
+				if (!dock_present()) {
+					err("Unable to dock!\n");
+					break;
+				}
+				post_dock_fixups();
+				hotplug_pci(type);
+				complete_dock();
+			}
+			break;
+		case ACPI_NOTIFY_EJECT_REQUEST:
+			dbg("EJECT request\n");
+			if (!dock_in_progress() && dock_present()) {
+				hotplug_pci(type);
+				undock();
+				eject_dock();
+				if (dock_present())
+					err("Unable to undock!\n");
+			}
+			break;
+	}
+}
+
+
+
+
+static acpi_status
+find_dock_ejd(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+	acpi_status status;
+	acpi_handle tmp;
+	acpi_handle dck_handle = (acpi_handle) context;
+	char objname[64];
+	struct acpi_buffer buffer = { .length = sizeof(objname),
+				      .pointer = objname };
+	struct acpi_buffer ejd_buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+	union acpi_object *ejd_obj;
+
+	status = acpi_get_handle(handle, "_EJD", &tmp);
+	if (ACPI_FAILURE(status))
+		return AE_OK;
+
+	/* make sure we are dependent on the dock device,
+	 * by executing the _EJD method, then getting a handle
+	 * to the device referenced by that name.  If that
+	 * device handle is the same handle as the dock station
+	 * handle, then we are a device dependent on the dock station
+	 */
+	acpi_get_name(dck_handle, ACPI_FULL_PATHNAME, &buffer);
+	status = acpi_evaluate_object(handle, "_EJD", NULL, &ejd_buffer);
+	if (ACPI_FAILURE(status)) {
+		err("Unable to execute _EJD!\n");
+		goto find_ejd_out;
+	}
+	ejd_obj = ejd_buffer.pointer;
+	status = acpi_get_handle(NULL, ejd_obj->string.pointer, &tmp);
+	if (ACPI_FAILURE(status))
+		goto find_ejd_out;
+
+	if (tmp == dck_handle) {
+		struct dependent_device *dd;
+		dbg("%s: found device dependent on dock\n", __FUNCTION__);
+		dd = alloc_dependent_device(handle);
+		if (!dd) {
+			err("Can't allocate memory for dependent device!\n");
+			goto find_ejd_out;
+		}
+		add_dependent_device(dd);
+	}
+
+find_ejd_out:
+	acpi_os_free(ejd_buffer.pointer);
+	return AE_OK;
+}
+
+
+
+int detect_dependent_devices(acpi_handle *bridge_handle)
+{
+	acpi_status status;
+	int count;
+
+	count = 0;
+
+	status = acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge_handle,
+					(u32)1, find_dependent_device,
+					(void *)&count, NULL);
+
+	return count;
+}
+
+
+
+
+
+static acpi_status
+find_dock(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+	int *count = (int *)context;
+
+	if (is_dock(handle)) {
+		dbg("%s: found dock\n", __FUNCTION__);
+		ds = kzalloc(sizeof(*ds), GFP_KERNEL);
+		ds->handle = handle;
+		INIT_LIST_HEAD(&ds->dependent_devices);
+		INIT_LIST_HEAD(&ds->pci_dependent_devices);
+
+		/* look for devices dependent on dock station */
+		acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+			ACPI_UINT32_MAX, find_dock_ejd, handle, NULL);
+
+		acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+			handle_hotplug_event_dock, ds);
+		(*count)++;
+	}
+
+	return AE_OK;
+}
+
+
+
+
+int find_dock_station(void)
+{
+	int num = 0;
+
+	ds = NULL;
+
+	/* start from the root object, because some laptops define
+	 * _DCK methods outside the scope of PCI (IBM x-series laptop)
+	 */
+	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+			ACPI_UINT32_MAX, find_dock, &num, NULL);
+
+	return num;
+}
+
+
+
+void remove_dock_station(void)
+{
+	struct dependent_device *dd, *tmp;
+	if (ds) {
+		if (ACPI_FAILURE(acpi_remove_notify_handler(ds->handle,
+			ACPI_SYSTEM_NOTIFY, handle_hotplug_event_dock)))
+			err("failed to remove dock notify handler\n");
+
+		/* free all dependent devices */
+		list_for_each_entry_safe(dd, tmp, &ds->dependent_devices,
+				device_list)
+			kfree(dd);
+
+		/* no need to touch the pci_dependent_device list,
+		 * cause all memory was freed above
+		 */
+		kfree(ds);
+	}
+}
+
+
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 509a5b3ae998..053ee843863c 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -46,7 +46,7 @@
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/smp_lock.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 #include "../pci.h"
 #include "pci_hotplug.h"
@@ -57,7 +57,6 @@ static LIST_HEAD(bridge_list);
 #define MY_NAME "acpiphp_glue"
 
 static void handle_hotplug_event_bridge (acpi_handle, u32, void *);
-static void handle_hotplug_event_func (acpi_handle, u32, void *);
 static void acpiphp_sanitize_bus(struct pci_bus *bus);
 static void acpiphp_set_hpp_values(acpi_handle handle, struct pci_bus *bus);
 
@@ -125,11 +124,11 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 	struct acpiphp_bridge *bridge = (struct acpiphp_bridge *)context;
 	struct acpiphp_slot *slot;
 	struct acpiphp_func *newfunc;
+	struct dependent_device *dd;
 	acpi_handle tmp;
 	acpi_status status = AE_OK;
 	unsigned long adr, sun;
-	int device, function;
-	static int num_slots = 0;	/* XXX if we support I/O node hotplug... */
+	int device, function, retval;
 
 	status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr);
 
@@ -138,21 +137,21 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 
 	status = acpi_get_handle(handle, "_EJ0", &tmp);
 
-	if (ACPI_FAILURE(status))
+	if (ACPI_FAILURE(status) && !(is_dependent_device(handle)))
 		return AE_OK;
 
 	device = (adr >> 16) & 0xffff;
 	function = adr & 0xffff;
 
-	newfunc = kmalloc(sizeof(struct acpiphp_func), GFP_KERNEL);
+	newfunc = kzalloc(sizeof(struct acpiphp_func), GFP_KERNEL);
 	if (!newfunc)
 		return AE_NO_MEMORY;
-	memset(newfunc, 0, sizeof(struct acpiphp_func));
 
 	INIT_LIST_HEAD(&newfunc->sibling);
 	newfunc->handle = handle;
 	newfunc->function = function;
-	newfunc->flags = FUNC_HAS_EJ0;
+	if (ACPI_SUCCESS(status))
+		newfunc->flags = FUNC_HAS_EJ0;
 
 	if (ACPI_SUCCESS(acpi_get_handle(handle, "_STA", &tmp)))
 		newfunc->flags |= FUNC_HAS_STA;
@@ -163,6 +162,19 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 	if (ACPI_SUCCESS(acpi_get_handle(handle, "_PS3", &tmp)))
 		newfunc->flags |= FUNC_HAS_PS3;
 
+	if (ACPI_SUCCESS(acpi_get_handle(handle, "_DCK", &tmp))) {
+		newfunc->flags |= FUNC_HAS_DCK;
+		/* add to devices dependent on dock station,
+		 * because this may actually be the dock bridge
+		 */
+		dd = alloc_dependent_device(handle);
+                if (!dd)
+                        err("Can't allocate memory for "
+				"new dependent device!\n");
+		else
+			add_dependent_device(dd);
+	}
+
 	status = acpi_evaluate_integer(handle, "_SUN", NULL, &sun);
 	if (ACPI_FAILURE(status))
 		sun = -1;
@@ -176,19 +188,17 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 		}
 
 	if (!slot) {
-		slot = kmalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);
+		slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);
 		if (!slot) {
 			kfree(newfunc);
 			return AE_NO_MEMORY;
 		}
 
-		memset(slot, 0, sizeof(struct acpiphp_slot));
 		slot->bridge = bridge;
-		slot->id = num_slots++;
 		slot->device = device;
 		slot->sun = sun;
 		INIT_LIST_HEAD(&slot->funcs);
-		init_MUTEX(&slot->crit_sect);
+		mutex_init(&slot->crit_sect);
 
 		slot->next = bridge->slots;
 		bridge->slots = slot;
@@ -198,6 +208,11 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 		dbg("found ACPI PCI Hotplug slot %d at PCI %04x:%02x:%02x\n",
 				slot->sun, pci_domain_nr(bridge->pci_bus),
 				bridge->pci_bus->number, slot->device);
+		retval = acpiphp_register_hotplug_slot(slot);
+		if (retval) {
+			warn("acpiphp_register_hotplug_slot failed(err code = 0x%x)\n", retval);
+			goto err_exit;
+		}
 	}
 
 	newfunc->slot = slot;
@@ -210,16 +225,41 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 		slot->flags |= (SLOT_ENABLED | SLOT_POWEREDON);
 	}
 
+	/* if this is a device dependent on a dock station,
+	 * associate the acpiphp_func to the dependent_device
+ 	 * struct.
+	 */
+	if ((dd = get_dependent_device(handle))) {
+		newfunc->flags |= FUNC_IS_DD;
+		/*
+		 * we don't want any devices which is dependent
+		 * on the dock to have it's _EJ0 method executed.
+		 * because we need to run _DCK first.
+		 */
+		newfunc->flags &= ~FUNC_HAS_EJ0;
+		dd->func = newfunc;
+		add_pci_dependent_device(dd);
+	}
+
 	/* install notify handler */
-	status = acpi_install_notify_handler(handle,
+	if (!(newfunc->flags & FUNC_HAS_DCK)) {
+		status = acpi_install_notify_handler(handle,
 					     ACPI_SYSTEM_NOTIFY,
 					     handle_hotplug_event_func,
 					     newfunc);
 
-	if (ACPI_FAILURE(status)) {
-		err("failed to register interrupt notify handler\n");
-		return status;
-	}
+		if (ACPI_FAILURE(status))
+			err("failed to register interrupt notify handler\n");
+	} else
+		status = AE_OK;
+
+	return status;
+
+ err_exit:
+	bridge->nr_slots--;
+	bridge->slots = slot->next;
+	kfree(slot);
+	kfree(newfunc);
 
 	return AE_OK;
 }
@@ -245,57 +285,19 @@ static int detect_ejectable_slots(acpi_handle *bridge_handle)
 static void decode_hpp(struct acpiphp_bridge *bridge)
 {
 	acpi_status status;
-	struct acpi_buffer buffer = { .length = ACPI_ALLOCATE_BUFFER,
-				      .pointer = NULL};
-	union acpi_object *package;
-	int i;
-
-	/* default numbers */
-	bridge->hpp.cache_line_size = 0x10;
-	bridge->hpp.latency_timer = 0x40;
-	bridge->hpp.enable_SERR = 0;
-	bridge->hpp.enable_PERR = 0;
-
-	status = acpi_evaluate_object(bridge->handle, "_HPP", NULL, &buffer);
 
+	status = acpi_get_hp_params_from_firmware(bridge->pci_dev, &bridge->hpp);
 	if (ACPI_FAILURE(status)) {
-		dbg("_HPP evaluation failed\n");
-		return;
+		/* use default numbers */
+		bridge->hpp.cache_line_size = 0x10;
+		bridge->hpp.latency_timer = 0x40;
+		bridge->hpp.enable_serr = 0;
+		bridge->hpp.enable_perr = 0;
 	}
-
-	package = (union acpi_object *) buffer.pointer;
-
-	if (!package || package->type != ACPI_TYPE_PACKAGE ||
-	    package->package.count != 4 || !package->package.elements) {
-		err("invalid _HPP object; ignoring\n");
-		goto err_exit;
-	}
-
-	for (i = 0; i < 4; i++) {
-		if (package->package.elements[i].type != ACPI_TYPE_INTEGER) {
-			err("invalid _HPP parameter type; ignoring\n");
-			goto err_exit;
-		}
-	}
-
-	bridge->hpp.cache_line_size = package->package.elements[0].integer.value;
-	bridge->hpp.latency_timer = package->package.elements[1].integer.value;
-	bridge->hpp.enable_SERR = package->package.elements[2].integer.value;
-	bridge->hpp.enable_PERR = package->package.elements[3].integer.value;
-
-	dbg("_HPP parameter = (%02x, %02x, %02x, %02x)\n",
-		bridge->hpp.cache_line_size,
-		bridge->hpp.latency_timer,
-		bridge->hpp.enable_SERR,
-		bridge->hpp.enable_PERR);
-
-	bridge->flags |= BRIDGE_HAS_HPP;
-
- err_exit:
-	kfree(buffer.pointer);
 }
 
 
+
 /* initialize miscellaneous stuff for both root and PCI-to-PCI bridge */
 static void init_bridge_misc(struct acpiphp_bridge *bridge)
 {
@@ -304,9 +306,16 @@ static void init_bridge_misc(struct acpiphp_bridge *bridge)
 	/* decode ACPI 2.0 _HPP (hot plug parameters) */
 	decode_hpp(bridge);
 
+	/* must be added to the list prior to calling register_slot */
+	list_add(&bridge->list, &bridge_list);
+
 	/* register all slot objects under this bridge */
 	status = acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge->handle, (u32)1,
 				     register_slot, bridge, NULL);
+	if (ACPI_FAILURE(status)) {
+		list_del(&bridge->list);
+		return;
+	}
 
 	/* install notify handler */
 	if (bridge->type != BRIDGE_TYPE_HOST) {
@@ -319,8 +328,6 @@ static void init_bridge_misc(struct acpiphp_bridge *bridge)
 			err("failed to register interrupt notify handler\n");
 		}
 	}
-
-	list_add(&bridge->list, &bridge_list);
 }
 
 
@@ -329,12 +336,10 @@ static void add_host_bridge(acpi_handle *handle, struct pci_bus *pci_bus)
 {
 	struct acpiphp_bridge *bridge;
 
-	bridge = kmalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
+	bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
 	if (bridge == NULL)
 		return;
 
-	memset(bridge, 0, sizeof(struct acpiphp_bridge));
-
 	bridge->type = BRIDGE_TYPE_HOST;
 	bridge->handle = handle;
 
@@ -351,14 +356,12 @@ static void add_p2p_bridge(acpi_handle *handle, struct pci_dev *pci_dev)
 {
 	struct acpiphp_bridge *bridge;
 
-	bridge = kmalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
+	bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
 	if (bridge == NULL) {
 		err("out of memory\n");
 		return;
 	}
 
-	memset(bridge, 0, sizeof(struct acpiphp_bridge));
-
 	bridge->type = BRIDGE_TYPE_P2P;
 	bridge->handle = handle;
 
@@ -410,11 +413,18 @@ find_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv)
 		goto out;
 
 	/* check if this bridge has ejectable slots */
-	if (detect_ejectable_slots(handle) > 0) {
+	if ((detect_ejectable_slots(handle) > 0) ||
+		(detect_dependent_devices(handle) > 0)) {
 		dbg("found PCI-to-PCI bridge at PCI %s\n", pci_name(dev));
 		add_p2p_bridge(handle, dev);
 	}
 
+	/* search P2P bridges under this p2p bridge */
+	status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
+				     find_p2p_bridge, dev->subordinate, NULL);
+	if (ACPI_FAILURE(status))
+		warn("find_p2p_bridge faied (error code = 0x%x)\n", status);
+
  out:
 	pci_dev_put(dev);
 	return AE_OK;
@@ -512,15 +522,19 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
 		list_for_each_safe (list, tmp, &slot->funcs) {
 			struct acpiphp_func *func;
 			func = list_entry(list, struct acpiphp_func, sibling);
-			status = acpi_remove_notify_handler(func->handle,
+			if (!(func->flags & FUNC_HAS_DCK)) {
+				status = acpi_remove_notify_handler(func->handle,
 						ACPI_SYSTEM_NOTIFY,
 						handle_hotplug_event_func);
-			if (ACPI_FAILURE(status))
-				err("failed to remove notify handler\n");
+				if (ACPI_FAILURE(status))
+					err("failed to remove notify handler\n");
+			}
 			pci_dev_put(func->pci_dev);
 			list_del(list);
 			kfree(func);
 		}
+		acpiphp_unregister_hotplug_slot(slot);
+		list_del(&slot->funcs);
 		kfree(slot);
 		slot = next;
 	}
@@ -551,7 +565,8 @@ static void remove_bridge(acpi_handle handle)
 	} else {
 		/* clean-up p2p bridges under this host bridge */
 		acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
-				(u32)1, cleanup_p2p_bridge, NULL, NULL);
+				    ACPI_UINT32_MAX, cleanup_p2p_bridge,
+				    NULL, NULL);
 	}
 }
 
@@ -751,6 +766,113 @@ static int power_off_slot(struct acpiphp_slot *slot)
 }
 
 
+
+/**
+ * acpiphp_max_busnr - return the highest reserved bus number under
+ * the given bus.
+ * @bus: bus to start search with
+ *
+ */
+static unsigned char acpiphp_max_busnr(struct pci_bus *bus)
+{
+	struct list_head *tmp;
+	unsigned char max, n;
+
+	/*
+	 * pci_bus_max_busnr will return the highest
+	 * reserved busnr for all these children.
+	 * that is equivalent to the bus->subordinate
+	 * value.  We don't want to use the parent's
+	 * bus->subordinate value because it could have
+	 * padding in it.
+	 */
+	max = bus->secondary;
+
+	list_for_each(tmp, &bus->children) {
+		n = pci_bus_max_busnr(pci_bus_b(tmp));
+		if (n > max)
+			max = n;
+	}
+	return max;
+}
+
+
+
+/**
+ *  get_func - get a pointer to acpiphp_func given a slot, device
+ *  @slot: slot to search
+ *  @dev:  pci_dev struct to match.
+ *
+ *  This function will increase the reference count of pci_dev,
+ *  so callers should call pci_dev_put when complete.
+ *
+ */
+static struct acpiphp_func *
+get_func(struct acpiphp_slot *slot, struct pci_dev *dev)
+{
+	struct acpiphp_func *func = NULL;
+	struct pci_bus *bus = slot->bridge->pci_bus;
+	struct pci_dev *pdev;
+
+	list_for_each_entry(func, &slot->funcs, sibling) {
+		pdev = pci_get_slot(bus, PCI_DEVFN(slot->device,
+					func->function));
+		if (pdev) {
+			if (pdev == dev)
+				break;
+			pci_dev_put(pdev);
+		}
+	}
+	return func;
+}
+
+
+/**
+ * acpiphp_bus_add - add a new bus to acpi subsystem
+ * @func: acpiphp_func of the bridge
+ *
+ */
+static int acpiphp_bus_add(struct acpiphp_func *func)
+{
+	acpi_handle phandle;
+	struct acpi_device *device, *pdevice;
+	int ret_val;
+
+	acpi_get_parent(func->handle, &phandle);
+	if (acpi_bus_get_device(phandle, &pdevice)) {
+		dbg("no parent device, assuming NULL\n");
+		pdevice = NULL;
+	}
+	if (!acpi_bus_get_device(func->handle, &device)) {
+		dbg("bus exists... trim\n");
+		/* this shouldn't be in here, so remove
+		 * the bus then re-add it...
+		 */
+		ret_val = acpi_bus_trim(device, 1);
+		dbg("acpi_bus_trim return %x\n", ret_val);
+	}
+
+	ret_val = acpi_bus_add(&device, pdevice, func->handle,
+		ACPI_BUS_TYPE_DEVICE);
+	if (ret_val) {
+		dbg("error adding bus, %x\n",
+			-ret_val);
+		goto acpiphp_bus_add_out;
+	}
+	/*
+	 * try to start anyway.  We could have failed to add
+	 * simply because this bus had previously been added
+	 * on another add.  Don't bother with the return value
+	 * we just keep going.
+	 */
+	ret_val = acpi_bus_start(device);
+
+acpiphp_bus_add_out:
+	return ret_val;
+}
+
+
+
 /**
  * enable_device - enable, configure a slot
  * @slot: slot to be enabled
@@ -788,7 +910,7 @@ static int enable_device(struct acpiphp_slot *slot)
 		goto err_exit;
 	}
 
-	max = bus->secondary;
+	max = acpiphp_max_busnr(bus);
 	for (pass = 0; pass < 2; pass++) {
 		list_for_each_entry(dev, &bus->devices, bus_list) {
 			if (PCI_SLOT(dev->devfn) != slot->device)
@@ -796,8 +918,15 @@ static int enable_device(struct acpiphp_slot *slot)
 			if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
 			    dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
 				max = pci_scan_bridge(bus, dev, max, pass);
-				if (pass && dev->subordinate)
+				if (pass && dev->subordinate) {
 					pci_bus_size_bridges(dev->subordinate);
+					func = get_func(slot, dev);
+					if (func) {
+						acpiphp_bus_add(func);
+						/* side effect of get_func */
+						pci_dev_put(dev);
+					}
+				}
 			}
 		}
 	}
@@ -806,8 +935,8 @@ static int enable_device(struct acpiphp_slot *slot)
 	acpiphp_sanitize_bus(bus);
 	pci_enable_bridges(bus);
 	pci_bus_add_devices(bus);
-	acpiphp_set_hpp_values(DEVICE_ACPI_HANDLE(&bus->self->dev), bus);
-	acpiphp_configure_ioapics(DEVICE_ACPI_HANDLE(&bus->self->dev));
+	acpiphp_set_hpp_values(slot->bridge->handle, bus);
+	acpiphp_configure_ioapics(slot->bridge->handle);
 
 	/* associate pci_dev to our representation */
 	list_for_each (l, &slot->funcs) {
@@ -987,11 +1116,11 @@ static void program_hpp(struct pci_dev *dev, struct acpiphp_bridge *bridge)
 	pci_write_config_byte(dev, PCI_LATENCY_TIMER,
 			bridge->hpp.latency_timer);
 	pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
-	if (bridge->hpp.enable_SERR)
+	if (bridge->hpp.enable_serr)
 		pci_cmd |= PCI_COMMAND_SERR;
 	else
 		pci_cmd &= ~PCI_COMMAND_SERR;
-	if (bridge->hpp.enable_PERR)
+	if (bridge->hpp.enable_perr)
 		pci_cmd |= PCI_COMMAND_PARITY;
 	else
 		pci_cmd &= ~PCI_COMMAND_PARITY;
@@ -1002,11 +1131,11 @@ static void program_hpp(struct pci_dev *dev, struct acpiphp_bridge *bridge)
 		pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER,
 				bridge->hpp.latency_timer);
 		pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &pci_bctl);
-		if (bridge->hpp.enable_SERR)
+		if (bridge->hpp.enable_serr)
 			pci_bctl |= PCI_BRIDGE_CTL_SERR;
 		else
 			pci_bctl &= ~PCI_BRIDGE_CTL_SERR;
-		if (bridge->hpp.enable_PERR)
+		if (bridge->hpp.enable_perr)
 			pci_bctl |= PCI_BRIDGE_CTL_PARITY;
 		else
 			pci_bctl &= ~PCI_BRIDGE_CTL_PARITY;
@@ -1026,6 +1155,7 @@ static void acpiphp_set_hpp_values(acpi_handle handle, struct pci_bus *bus)
 
 	memset(&bridge, 0, sizeof(bridge));
 	bridge.handle = handle;
+	bridge.pci_dev = bus->self;
 	decode_hpp(&bridge);
 	list_for_each_entry(dev, &bus->devices, bus_list)
 		program_hpp(dev, &bridge);
@@ -1200,7 +1330,7 @@ static void handle_hotplug_event_bridge(acpi_handle handle, u32 type, void *cont
  * handles ACPI event notification on slots
  *
  */
-static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context)
+void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context)
 {
 	struct acpiphp_func *func;
 	char objname[64];
@@ -1242,41 +1372,13 @@ static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *contex
 	}
 }
 
-static int is_root_bridge(acpi_handle handle)
-{
-	acpi_status status;
-	struct acpi_device_info *info;
-	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
-	int i;
-
-	status = acpi_get_object_info(handle, &buffer);
-	if (ACPI_SUCCESS(status)) {
-		info = buffer.pointer;
-		if ((info->valid & ACPI_VALID_HID) &&
-			!strcmp(PCI_ROOT_HID_STRING,
-					info->hardware_id.value)) {
-			acpi_os_free(buffer.pointer);
-			return 1;
-		}
-		if (info->valid & ACPI_VALID_CID) {
-			for (i=0; i < info->compatibility_id.count; i++) {
-				if (!strcmp(PCI_ROOT_HID_STRING,
-					info->compatibility_id.id[i].value)) {
-					acpi_os_free(buffer.pointer);
-					return 1;
-				}
-			}
-		}
-	}
-	return 0;
-}
 
 static acpi_status
 find_root_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
 	int *count = (int *)context;
 
-	if (is_root_bridge(handle)) {
+	if (acpi_root_bridge(handle)) {
 		acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
 				handle_hotplug_event_bridge, NULL);
 			(*count)++;
@@ -1373,26 +1475,6 @@ static int acpiphp_for_each_slot(acpiphp_callback fn, void *data)
 }
 #endif
 
-/* search matching slot from id  */
-struct acpiphp_slot *get_slot_from_id(int id)
-{
-	struct list_head *node;
-	struct acpiphp_bridge *bridge;
-	struct acpiphp_slot *slot;
-
-	list_for_each (node, &bridge_list) {
-		bridge = (struct acpiphp_bridge *)node;
-		for (slot = bridge->slots; slot; slot = slot->next)
-			if (slot->id == id)
-				return slot;
-	}
-
-	/* should never happen! */
-	err("%s: no object for id %d\n", __FUNCTION__, id);
-	WARN_ON(1);
-	return NULL;
-}
-
 
 /**
  * acpiphp_enable_slot - power on slot
@@ -1401,7 +1483,7 @@ int acpiphp_enable_slot(struct acpiphp_slot *slot)
 {
 	int retval;
 
-	down(&slot->crit_sect);
+	mutex_lock(&slot->crit_sect);
 
 	/* wake up all functions */
 	retval = power_on_slot(slot);
@@ -1413,7 +1495,7 @@ int acpiphp_enable_slot(struct acpiphp_slot *slot)
 		retval = enable_device(slot);
 
  err_exit:
-	up(&slot->crit_sect);
+	mutex_unlock(&slot->crit_sect);
 	return retval;
 }
 
@@ -1424,7 +1506,7 @@ int acpiphp_disable_slot(struct acpiphp_slot *slot)
 {
 	int retval = 0;
 
-	down(&slot->crit_sect);
+	mutex_lock(&slot->crit_sect);
 
 	/* unconfigure all functions */
 	retval = disable_device(slot);
@@ -1437,7 +1519,7 @@ int acpiphp_disable_slot(struct acpiphp_slot *slot)
 		goto err_exit;
 
  err_exit:
-	up(&slot->crit_sect);
+	mutex_unlock(&slot->crit_sect);
 	return retval;
 }
 
diff --git a/drivers/pci/hotplug/cpci_hotplug_core.c b/drivers/pci/hotplug/cpci_hotplug_core.c
index 30af105271a2..037ce4c91687 100644
--- a/drivers/pci/hotplug/cpci_hotplug_core.c
+++ b/drivers/pci/hotplug/cpci_hotplug_core.c
@@ -248,22 +248,19 @@ cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last)
 	 * with the pci_hotplug subsystem.
 	 */
 	for (i = first; i <= last; ++i) {
-		slot = kmalloc(sizeof (struct slot), GFP_KERNEL);
+		slot = kzalloc(sizeof (struct slot), GFP_KERNEL);
 		if (!slot)
 			goto error;
-		memset(slot, 0, sizeof (struct slot));
 
 		hotplug_slot =
-		    kmalloc(sizeof (struct hotplug_slot), GFP_KERNEL);
+			kzalloc(sizeof (struct hotplug_slot), GFP_KERNEL);
 		if (!hotplug_slot)
 			goto error_slot;
-		memset(hotplug_slot, 0, sizeof (struct hotplug_slot));
 		slot->hotplug_slot = hotplug_slot;
 
-		info = kmalloc(sizeof (struct hotplug_slot_info), GFP_KERNEL);
+		info = kzalloc(sizeof (struct hotplug_slot_info), GFP_KERNEL);
 		if (!info)
 			goto error_hpslot;
-		memset(info, 0, sizeof (struct hotplug_slot_info));
 		hotplug_slot->info = info;
 
 		name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
diff --git a/drivers/pci/hotplug/cpqphp.h b/drivers/pci/hotplug/cpqphp.h
index cb88404c89fe..c74e9e37e76b 100644
--- a/drivers/pci/hotplug/cpqphp.h
+++ b/drivers/pci/hotplug/cpqphp.h
@@ -32,6 +32,7 @@
 #include <linux/interrupt.h>
 #include <asm/io.h>		/* for read? and write? functions */
 #include <linux/delay.h>	/* for delays */
+#include <linux/mutex.h>
 
 #define MY_NAME	"cpqphp"
 
@@ -286,7 +287,7 @@ struct event_info {
 struct controller {
 	struct controller *next;
 	u32 ctrl_int_comp;
-	struct semaphore crit_sect;	/* critical section semaphore */
+	struct mutex crit_sect;		/* critical section mutex */
 	void __iomem *hpc_reg;		/* cookie for our pci controller location */
 	struct pci_resource *mem_head;
 	struct pci_resource *p_mem_head;
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index b3659ffccac9..9bc1deb8df52 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -347,26 +347,22 @@ static int ctrl_slot_setup(struct controller *ctrl,
 	slot_number = ctrl->first_slot;
 
 	while (number_of_slots) {
-		slot = kmalloc(sizeof(*slot), GFP_KERNEL);
+		slot = kzalloc(sizeof(*slot), GFP_KERNEL);
 		if (!slot)
 			goto error;
 
-		memset(slot, 0, sizeof(struct slot));
-		slot->hotplug_slot = kmalloc(sizeof(*(slot->hotplug_slot)),
+		slot->hotplug_slot = kzalloc(sizeof(*(slot->hotplug_slot)),
 						GFP_KERNEL);
 		if (!slot->hotplug_slot)
 			goto error_slot;
 		hotplug_slot = slot->hotplug_slot;
-		memset(hotplug_slot, 0, sizeof(struct hotplug_slot));
 
 		hotplug_slot->info =
-				kmalloc(sizeof(*(hotplug_slot->info)),
+				kzalloc(sizeof(*(hotplug_slot->info)),
 							GFP_KERNEL);
 		if (!hotplug_slot->info)
 			goto error_hpslot;
 		hotplug_slot_info = hotplug_slot->info;
-		memset(hotplug_slot_info, 0,
-				sizeof(struct hotplug_slot_info));
 		hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
 
 		if (!hotplug_slot->name)
@@ -599,7 +595,7 @@ cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func,
 	hp_slot = func->device - ctrl->slot_device_offset;
 
 	// Wait for exclusive access to hardware
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	if (status == 1) {
 		amber_LED_on (ctrl, hp_slot);
@@ -607,7 +603,7 @@ cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func,
 		amber_LED_off (ctrl, hp_slot);
 	} else {
 		// Done with exclusive hardware access
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 		return(1);
 	}
 
@@ -617,7 +613,7 @@ cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func,
 	wait_for_ctrl_irq (ctrl);
 
 	// Done with exclusive hardware access
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	return(0);
 }
@@ -854,13 +850,12 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 			goto err_disable_device;
 		}
 
-		ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL);
+		ctrl = kzalloc(sizeof(struct controller), GFP_KERNEL);
 		if (!ctrl) {
 			err("%s : out of memory\n", __FUNCTION__);
 			rc = -ENOMEM;
 			goto err_disable_device;
 		}
-		memset(ctrl, 0, sizeof(struct controller));
 
 		rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &subsystem_deviceid);
 		if (rc) {
@@ -1084,7 +1079,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	dbg("bus device function rev: %d %d %d %d\n", ctrl->bus,
 		PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev);
 
-	init_MUTEX(&ctrl->crit_sect);
+	mutex_init(&ctrl->crit_sect);
 	init_waitqueue_head(&ctrl->queue);
 
 	/* initialize our threads if they haven't already been started up */
@@ -1223,7 +1218,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	// turn off empty slots here unless command line option "ON" set
 	// Wait for exclusive access to hardware
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F;
 
@@ -1270,12 +1265,12 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	rc = init_SERR(ctrl);
 	if (rc) {
 		err("init_SERR failed\n");
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 		goto err_free_irq;
 	}
 
 	// Done with exclusive hardware access
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	cpqhp_create_debugfs_files(ctrl);
 
diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
index 771ed34b1819..55d2dc7e39ca 100644
--- a/drivers/pci/hotplug/cpqphp_ctrl.c
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -1282,9 +1282,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 	u8 hp_slot;
 	u8 temp_byte;
 	u8 adapter_speed;
-	u32 index;
 	u32 rc = 0;
-	u32 src = 8;
 
 	hp_slot = func->device - ctrl->slot_device_offset;
 
@@ -1299,7 +1297,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 		 **********************************/
 		rc = CARD_FUNCTIONING;
 	} else {
-		down(&ctrl->crit_sect);
+		mutex_lock(&ctrl->crit_sect);
 
 		/* turn on board without attaching to the bus */
 		enable_slot_power (ctrl, hp_slot);
@@ -1333,12 +1331,12 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 		/* Wait for SOBS to be unset */
 		wait_for_ctrl_irq (ctrl);
 
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 
 		if (rc)
 			return rc;
 
-		down(&ctrl->crit_sect);
+		mutex_lock(&ctrl->crit_sect);
 
 		slot_enable (ctrl, hp_slot);
 		green_LED_blink (ctrl, hp_slot);
@@ -1350,7 +1348,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 		/* Wait for SOBS to be unset */
 		wait_for_ctrl_irq (ctrl);
 
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 
 		/* Wait for ~1 second because of hot plug spec */
 		long_delay(1*HZ);
@@ -1368,76 +1366,30 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 
 			rc = cpqhp_configure_board(ctrl, func);
 
-			if (rc || src) {
-				/* If configuration fails, turn it off
-				 * Get slot won't work for devices behind
-				 * bridges, but in this case it will always be
-				 * called for the "base" bus/dev/func of an
-				 * adapter. */
+			/* If configuration fails, turn it off
+			 * Get slot won't work for devices behind
+			 * bridges, but in this case it will always be
+			 * called for the "base" bus/dev/func of an
+			 * adapter. */
 
-				down(&ctrl->crit_sect);
+			mutex_lock(&ctrl->crit_sect);
 
-				amber_LED_on (ctrl, hp_slot);
-				green_LED_off (ctrl, hp_slot);
-				slot_disable (ctrl, hp_slot);
-
-				set_SOGO(ctrl);
-
-				/* Wait for SOBS to be unset */
-				wait_for_ctrl_irq (ctrl);
-
-				up(&ctrl->crit_sect);
-
-				if (rc)
-					return rc;
-				else
-					return 1;
-			}
-
-			func->status = 0;
-			func->switch_save = 0x10;
-
-			index = 1;
-			while (((func = cpqhp_slot_find(func->bus, func->device, index)) != NULL) && !rc) {
-				rc |= cpqhp_configure_board(ctrl, func);
-				index++;
-			}
-
-			if (rc) {
-				/* If configuration fails, turn it off
-				 * Get slot won't work for devices behind
-				 * bridges, but in this case it will always be
-				 * called for the "base" bus/dev/func of an
-				 * adapter. */
-
-				down(&ctrl->crit_sect);
-
-				amber_LED_on (ctrl, hp_slot);
-				green_LED_off (ctrl, hp_slot);
-				slot_disable (ctrl, hp_slot);
-
-				set_SOGO(ctrl);
-
-				/* Wait for SOBS to be unset */
-				wait_for_ctrl_irq (ctrl);
-
-				up(&ctrl->crit_sect);
-
-				return rc;
-			}
-			/* Done configuring so turn LED on full time */
-
-			down(&ctrl->crit_sect);
-
-			green_LED_on (ctrl, hp_slot);
+			amber_LED_on (ctrl, hp_slot);
+			green_LED_off (ctrl, hp_slot);
+			slot_disable (ctrl, hp_slot);
 
 			set_SOGO(ctrl);
 
 			/* Wait for SOBS to be unset */
 			wait_for_ctrl_irq (ctrl);
 
-			up(&ctrl->crit_sect);
-			rc = 0;
+			mutex_unlock(&ctrl->crit_sect);
+
+			if (rc)
+				return rc;
+			else
+				return 1;
+
 		} else {
 			/* Something is wrong
 
@@ -1445,7 +1397,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 			 * in this case it will always be called for the "base"
 			 * bus/dev/func of an adapter. */
 
-			down(&ctrl->crit_sect);
+			mutex_lock(&ctrl->crit_sect);
 
 			amber_LED_on (ctrl, hp_slot);
 			green_LED_off (ctrl, hp_slot);
@@ -1456,7 +1408,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 			/* Wait for SOBS to be unset */
 			wait_for_ctrl_irq (ctrl);
 
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 		}
 
 	}
@@ -1488,7 +1440,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 	dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n",
 	    __FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot);
 
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	/* turn on board without attaching to the bus */
 	enable_slot_power(ctrl, hp_slot);
@@ -1522,7 +1474,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 	/* Wait for SOBS to be unset */
 	wait_for_ctrl_irq(ctrl);
 
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	if (rc)
 		return rc;
@@ -1532,7 +1484,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 	/* turn on board and blink green LED */
 
 	dbg("%s: before down\n", __FUNCTION__);
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 	dbg("%s: after down\n", __FUNCTION__);
 
 	dbg("%s: before slot_enable\n", __FUNCTION__);
@@ -1553,7 +1505,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 	dbg("%s: after wait_for_ctrl_irq\n", __FUNCTION__);
 
 	dbg("%s: before up\n", __FUNCTION__);
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 	dbg("%s: after up\n", __FUNCTION__);
 
 	/* Wait for ~1 second because of hot plug spec */
@@ -1607,7 +1559,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 		cpqhp_resource_sort_and_combine(&(ctrl->bus_head));
 
 		if (rc) {
-			down(&ctrl->crit_sect);
+			mutex_lock(&ctrl->crit_sect);
 
 			amber_LED_on (ctrl, hp_slot);
 			green_LED_off (ctrl, hp_slot);
@@ -1618,7 +1570,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 			/* Wait for SOBS to be unset */
 			wait_for_ctrl_irq (ctrl);
 
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return rc;
 		} else {
 			cpqhp_save_slot_config(ctrl, func);
@@ -1640,7 +1592,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 			}
 		} while (new_slot);
 
-		down(&ctrl->crit_sect);
+		mutex_lock(&ctrl->crit_sect);
 
 		green_LED_on (ctrl, hp_slot);
 
@@ -1649,9 +1601,9 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 		/* Wait for SOBS to be unset */
 		wait_for_ctrl_irq (ctrl);
 
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 	} else {
-		down(&ctrl->crit_sect);
+		mutex_lock(&ctrl->crit_sect);
 
 		amber_LED_on (ctrl, hp_slot);
 		green_LED_off (ctrl, hp_slot);
@@ -1662,7 +1614,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 		/* Wait for SOBS to be unset */
 		wait_for_ctrl_irq (ctrl);
 
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 
 		return rc;
 	}
@@ -1721,7 +1673,7 @@ static u32 remove_board(struct pci_func * func, u32 replace_flag, struct control
 		func->status = 0x01;
 	func->configured = 0;
 
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	green_LED_off (ctrl, hp_slot);
 	slot_disable (ctrl, hp_slot);
@@ -1736,7 +1688,7 @@ static u32 remove_board(struct pci_func * func, u32 replace_flag, struct control
 	/* Wait for SOBS to be unset */
 	wait_for_ctrl_irq (ctrl);
 
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	if (!replace_flag && ctrl->add_support) {
 		while (func) {
@@ -1899,7 +1851,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					dbg("button cancel\n");
 					del_timer(&p_slot->task_event);
 
-					down(&ctrl->crit_sect);
+					mutex_lock(&ctrl->crit_sect);
 
 					if (p_slot->state == BLINKINGOFF_STATE) {
 						/* slot is on */
@@ -1922,7 +1874,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					/* Wait for SOBS to be unset */
 					wait_for_ctrl_irq (ctrl);
 
-					up(&ctrl->crit_sect);
+					mutex_unlock(&ctrl->crit_sect);
 				}
 				/*** button Released (No action on press...) */
 				else if (ctrl->event_queue[loop].event_type == INT_BUTTON_RELEASE) {
@@ -1937,7 +1889,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 						p_slot->state = BLINKINGON_STATE;
 						info(msg_button_on, p_slot->number);
 					}
-					down(&ctrl->crit_sect);
+					mutex_lock(&ctrl->crit_sect);
 					
 					dbg("blink green LED and turn off amber\n");
 					
@@ -1949,7 +1901,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					/* Wait for SOBS to be unset */
 					wait_for_ctrl_irq (ctrl);
 
-					up(&ctrl->crit_sect);
+					mutex_unlock(&ctrl->crit_sect);
 					init_timer(&p_slot->task_event);
 					p_slot->hp_slot = hp_slot;
 					p_slot->ctrl = ctrl;
diff --git a/drivers/pci/hotplug/fakephp.c b/drivers/pci/hotplug/fakephp.c
index 060d74775d7b..71b80c23e8ce 100644
--- a/drivers/pci/hotplug/fakephp.c
+++ b/drivers/pci/hotplug/fakephp.c
@@ -95,15 +95,13 @@ static int add_slot(struct pci_dev *dev)
 	struct hotplug_slot *slot;
 	int retval = -ENOMEM;
 
-	slot = kmalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
+	slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
 	if (!slot)
 		goto error;
-	memset(slot, 0, sizeof(*slot));
 
-	slot->info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
+	slot->info = kzalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
 	if (!slot->info)
 		goto error_slot;
-	memset(slot->info, 0, sizeof(struct hotplug_slot_info));
 
 	slot->info->power_status = 1;
 	slot->info->max_bus_speed = PCI_SPEED_UNKNOWN;
@@ -227,11 +225,10 @@ static void pci_rescan_bus(const struct pci_bus *bus)
 {
 	unsigned int devfn;
 	struct pci_dev *dev;
-	dev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
+	dev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL);
 	if (!dev)
 		return;
 
-	memset(dev, 0, sizeof(dev));
 	dev->bus = (struct pci_bus*)bus;
 	dev->sysdata = bus->sysdata;
 	for (devfn = 0; devfn < 0x100; devfn += 8) {
diff --git a/drivers/pci/hotplug/ibmphp.h b/drivers/pci/hotplug/ibmphp.h
index c22e0284d7b1..dba6d8ca9bda 100644
--- a/drivers/pci/hotplug/ibmphp.h
+++ b/drivers/pci/hotplug/ibmphp.h
@@ -406,8 +406,6 @@ extern void ibmphp_hpc_stop_poll_thread (void);
 //----------------------------------------------------------------------------
 // HPC return codes
 //----------------------------------------------------------------------------
-#define FALSE				0x00
-#define TRUE				0x01
 #define HPC_ERROR			0xFF
 
 //-----------------------------------------------------------------------------
diff --git a/drivers/pci/hotplug/ibmphp_core.c b/drivers/pci/hotplug/ibmphp_core.c
index dc59da675c08..e13d5b87241a 100644
--- a/drivers/pci/hotplug/ibmphp_core.c
+++ b/drivers/pci/hotplug/ibmphp_core.c
@@ -1141,7 +1141,7 @@ static int enable_slot(struct hotplug_slot *hs)
 		goto error_power;
 	}
 
-	slot_cur->func = kmalloc(sizeof(struct pci_func), GFP_KERNEL);
+	slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL);
 	if (!slot_cur->func) {
 		/* We cannot do update_slot_info here, since no memory for
 		 * kmalloc n.e.ways, and update_slot_info allocates some */
@@ -1149,7 +1149,6 @@ static int enable_slot(struct hotplug_slot *hs)
 		rc = -ENOMEM;
 		goto error_power;
 	}
-	memset(slot_cur->func, 0, sizeof(struct pci_func));
 	slot_cur->func->busno = slot_cur->bus;
 	slot_cur->func->device = slot_cur->device;
 	for (i = 0; i < 4; i++)
@@ -1240,9 +1239,9 @@ int ibmphp_do_disable_slot(struct slot *slot_cur)
 	}
 	
 	flag = slot_cur->flag;
-	slot_cur->flag = TRUE;
+	slot_cur->flag = 1;
 
-	if (flag == TRUE) {
+	if (flag == 1) {
 		rc = validate(slot_cur, DISABLE);
 			/* checking if powered off already & valid slot # */
 		if (rc)
@@ -1252,13 +1251,12 @@ int ibmphp_do_disable_slot(struct slot *slot_cur)
 
 	if (slot_cur->func == NULL) {
 		/* We need this for fncs's that were there on bootup */
-		slot_cur->func = kmalloc(sizeof(struct pci_func), GFP_KERNEL);
+		slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL);
 		if (!slot_cur->func) {
 			err("out of system memory\n");
 			rc = -ENOMEM;
 			goto error;
 		}
-		memset(slot_cur->func, 0, sizeof(struct pci_func));
 		slot_cur->func->busno = slot_cur->bus;
 		slot_cur->func->device = slot_cur->device;
 	}
diff --git a/drivers/pci/hotplug/ibmphp_ebda.c b/drivers/pci/hotplug/ibmphp_ebda.c
index aea1187c73ad..05e4f5a1927a 100644
--- a/drivers/pci/hotplug/ibmphp_ebda.c
+++ b/drivers/pci/hotplug/ibmphp_ebda.c
@@ -72,13 +72,7 @@ static int ebda_rio_table (void);
 
 static struct ebda_hpc_list * __init alloc_ebda_hpc_list (void)
 {
-	struct ebda_hpc_list *list;
-
-	list = kmalloc (sizeof (struct ebda_hpc_list), GFP_KERNEL);
-	if (!list)
-		return NULL;
-	memset (list, 0, sizeof (*list));
-	return list;
+	return kzalloc(sizeof(struct ebda_hpc_list), GFP_KERNEL);
 }
 
 static struct controller *alloc_ebda_hpc (u32 slot_count, u32 bus_count)
@@ -87,21 +81,18 @@ static struct controller *alloc_ebda_hpc (u32 slot_count, u32 bus_count)
 	struct ebda_hpc_slot *slots;
 	struct ebda_hpc_bus *buses;
 
-	controller = kmalloc (sizeof (struct controller), GFP_KERNEL);
+	controller = kzalloc(sizeof(struct controller), GFP_KERNEL);
 	if (!controller)
 		goto error;
-	memset (controller, 0, sizeof (*controller));
 
-	slots = kmalloc (sizeof (struct ebda_hpc_slot) * slot_count, GFP_KERNEL);
+	slots = kcalloc(slot_count, sizeof(struct ebda_hpc_slot), GFP_KERNEL);
 	if (!slots)
 		goto error_contr;
-	memset (slots, 0, sizeof (*slots) * slot_count);
 	controller->slots = slots;
 
-	buses = kmalloc (sizeof (struct ebda_hpc_bus) * bus_count, GFP_KERNEL);
+	buses = kcalloc(bus_count, sizeof(struct ebda_hpc_bus), GFP_KERNEL);
 	if (!buses)
 		goto error_slots;
-	memset (buses, 0, sizeof (*buses) * bus_count);
 	controller->buses = buses;
 
 	return controller;
@@ -122,24 +113,12 @@ static void free_ebda_hpc (struct controller *controller)
 
 static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void)
 {
-	struct ebda_rsrc_list *list;
-
-	list = kmalloc (sizeof (struct ebda_rsrc_list), GFP_KERNEL);
-	if (!list)
-		return NULL;
-	memset (list, 0, sizeof (*list));
-	return list;
+	return kzalloc(sizeof(struct ebda_rsrc_list), GFP_KERNEL);
 }
 
 static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
 {
-	struct ebda_pci_rsrc *resource;
-
-	resource = kmalloc (sizeof (struct ebda_pci_rsrc), GFP_KERNEL);
-	if (!resource)
-		return NULL;
-	memset (resource, 0, sizeof (*resource));
-	return resource;
+	return kzalloc(sizeof(struct ebda_pci_rsrc), GFP_KERNEL);
 }
 
 static void __init print_bus_info (void)
@@ -390,10 +369,9 @@ int __init ibmphp_access_ebda (void)
 			debug ("now enter io table ---\n");
 			debug ("rio blk id: %x\n", blk_id);
 
-			rio_table_ptr = kmalloc (sizeof (struct rio_table_hdr), GFP_KERNEL);
+			rio_table_ptr = kzalloc(sizeof(struct rio_table_hdr), GFP_KERNEL);
 			if (!rio_table_ptr)
 				return -ENOMEM; 
-			memset (rio_table_ptr, 0, sizeof (struct rio_table_hdr) );
 			rio_table_ptr->ver_num = readb (io_mem + offset);
 			rio_table_ptr->scal_count = readb (io_mem + offset + 1);
 			rio_table_ptr->riodev_count = readb (io_mem + offset + 2);
@@ -445,10 +423,9 @@ static int __init ebda_rio_table (void)
 
 	// we do concern about rio details
 	for (i = 0; i < rio_table_ptr->riodev_count; i++) {
-		rio_detail_ptr = kmalloc (sizeof (struct rio_detail), GFP_KERNEL);
+		rio_detail_ptr = kzalloc(sizeof(struct rio_detail), GFP_KERNEL);
 		if (!rio_detail_ptr)
 			return -ENOMEM;
-		memset (rio_detail_ptr, 0, sizeof (struct rio_detail));
 		rio_detail_ptr->rio_node_id = readb (io_mem + offset);
 		rio_detail_ptr->bbar = readl (io_mem + offset + 1);
 		rio_detail_ptr->rio_type = readb (io_mem + offset + 5);
@@ -503,10 +480,9 @@ static int __init combine_wpg_for_chassis (void)
 		rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
 		opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
 		if (!opt_rio_ptr) {
-			opt_rio_ptr = (struct opt_rio *) kmalloc (sizeof (struct opt_rio), GFP_KERNEL);
+			opt_rio_ptr = kzalloc(sizeof(struct opt_rio), GFP_KERNEL);
 			if (!opt_rio_ptr)
 				return -ENOMEM;
-			memset (opt_rio_ptr, 0, sizeof (struct opt_rio));
 			opt_rio_ptr->rio_type = rio_detail_ptr->rio_type;
 			opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num;
 			opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
@@ -546,10 +522,9 @@ static int combine_wpg_for_expansion (void)
 		rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
 		opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
 		if (!opt_rio_lo_ptr) {
-			opt_rio_lo_ptr = (struct opt_rio_lo *) kmalloc (sizeof (struct opt_rio_lo), GFP_KERNEL);
+			opt_rio_lo_ptr = kzalloc(sizeof(struct opt_rio_lo), GFP_KERNEL);
 			if (!opt_rio_lo_ptr)
 				return -ENOMEM;
-			memset (opt_rio_lo_ptr, 0, sizeof (struct opt_rio_lo));
 			opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type;
 			opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num;
 			opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
@@ -842,12 +817,11 @@ static int __init ebda_rsrc_controller (void)
 
 			bus_info_ptr2 = ibmphp_find_same_bus_num (slot_ptr->slot_bus_num);
 			if (!bus_info_ptr2) {
-				bus_info_ptr1 = (struct bus_info *) kmalloc (sizeof (struct bus_info), GFP_KERNEL);
+				bus_info_ptr1 = kzalloc(sizeof(struct bus_info), GFP_KERNEL);
 				if (!bus_info_ptr1) {
 					rc = -ENOMEM;
 					goto error_no_hp_slot;
 				}
-				memset (bus_info_ptr1, 0, sizeof (struct bus_info));
 				bus_info_ptr1->slot_min = slot_ptr->slot_num;
 				bus_info_ptr1->slot_max = slot_ptr->slot_num;
 				bus_info_ptr1->slot_count += 1;
@@ -946,19 +920,17 @@ static int __init ebda_rsrc_controller (void)
 		// register slots with hpc core as well as create linked list of ibm slot
 		for (index = 0; index < hpc_ptr->slot_count; index++) {
 
-			hp_slot_ptr = kmalloc(sizeof(*hp_slot_ptr), GFP_KERNEL);
+			hp_slot_ptr = kzalloc(sizeof(*hp_slot_ptr), GFP_KERNEL);
 			if (!hp_slot_ptr) {
 				rc = -ENOMEM;
 				goto error_no_hp_slot;
 			}
-			memset(hp_slot_ptr, 0, sizeof(*hp_slot_ptr));
 
-			hp_slot_ptr->info = kmalloc (sizeof(struct hotplug_slot_info), GFP_KERNEL);
+			hp_slot_ptr->info = kzalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
 			if (!hp_slot_ptr->info) {
 				rc = -ENOMEM;
 				goto error_no_hp_info;
 			}
-			memset(hp_slot_ptr->info, 0, sizeof(struct hotplug_slot_info));
 
 			hp_slot_ptr->name = kmalloc(30, GFP_KERNEL);
 			if (!hp_slot_ptr->name) {
@@ -966,14 +938,13 @@ static int __init ebda_rsrc_controller (void)
 				goto error_no_hp_name;
 			}
 
-			tmp_slot = kmalloc(sizeof(*tmp_slot), GFP_KERNEL);
+			tmp_slot = kzalloc(sizeof(*tmp_slot), GFP_KERNEL);
 			if (!tmp_slot) {
 				rc = -ENOMEM;
 				goto error_no_slot;
 			}
-			memset(tmp_slot, 0, sizeof(*tmp_slot));
 
-			tmp_slot->flag = TRUE;
+			tmp_slot->flag = 1;
 
 			tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap;
 			if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX)
diff --git a/drivers/pci/hotplug/ibmphp_hpc.c b/drivers/pci/hotplug/ibmphp_hpc.c
index 1a3eb8d3d4cb..c3ac98a0a6a6 100644
--- a/drivers/pci/hotplug/ibmphp_hpc.c
+++ b/drivers/pci/hotplug/ibmphp_hpc.c
@@ -34,9 +34,11 @@
 #include <linux/pci.h>
 #include <linux/smp_lock.h>
 #include <linux/init.h>
+#include <linux/mutex.h>
+
 #include "ibmphp.h"
 
-static int to_debug = FALSE;
+static int to_debug = 0;
 #define debug_polling(fmt, arg...)	do { if (to_debug) debug (fmt, arg); } while (0)
 
 //----------------------------------------------------------------------------
@@ -93,15 +95,15 @@ static int to_debug = FALSE;
 //----------------------------------------------------------------------------
 // macro utilities
 //----------------------------------------------------------------------------
-// if bits 20,22,25,26,27,29,30 are OFF return TRUE
-#define HPC_I2CSTATUS_CHECK(s)	((u8)((s & 0x00000A76) ? FALSE : TRUE))
+// if bits 20,22,25,26,27,29,30 are OFF return 1
+#define HPC_I2CSTATUS_CHECK(s)	((u8)((s & 0x00000A76) ? 0 : 1))
 
 //----------------------------------------------------------------------------
 // global variables
 //----------------------------------------------------------------------------
 static int ibmphp_shutdown;
 static int tid_poll;
-static struct semaphore sem_hpcaccess;	// lock access to HPC
+static struct mutex sem_hpcaccess;	// lock access to HPC
 static struct semaphore semOperations;	// lock all operations and
 					// access to data structures
 static struct semaphore sem_exit;	// make sure polling thread goes away
@@ -131,11 +133,11 @@ void __init ibmphp_hpc_initvars (void)
 {
 	debug ("%s - Entry\n", __FUNCTION__);
 
-	init_MUTEX (&sem_hpcaccess);
+	mutex_init(&sem_hpcaccess);
 	init_MUTEX (&semOperations);
 	init_MUTEX_LOCKED (&sem_exit);
-	to_debug = FALSE;
-	ibmphp_shutdown = FALSE;
+	to_debug = 0;
+	ibmphp_shutdown = 0;
 	tid_poll = 0;
 
 	debug ("%s - Exit\n", __FUNCTION__);
@@ -737,21 +739,21 @@ int ibmphp_hpc_writeslot (struct slot * pslot, u8 cmd)
 		// check controller is still not working on the command
 		//--------------------------------------------------------------------
 		timeout = CMD_COMPLETE_TOUT_SEC;
-		done = FALSE;
+		done = 0;
 		while (!done) {
 			rc = hpc_wait_ctlr_notworking (HPC_CTLR_WORKING_TOUT, ctlr_ptr, wpg_bbar,
 							&status);
 			if (!rc) {
 				if (NEEDTOCHECK_CMDSTATUS (cmd)) {
 					if (CTLR_FINISHED (status) == HPC_CTLR_FINISHED_YES)
-						done = TRUE;
+						done = 1;
 				} else
-					done = TRUE;
+					done = 1;
 			}
 			if (!done) {
 				msleep(1000);
 				if (timeout < 1) {
-					done = TRUE;
+					done = 1;
 					err ("%s - Error command complete timeout\n", __FUNCTION__);
 					rc = -EFAULT;
 				} else
@@ -778,7 +780,7 @@ int ibmphp_hpc_writeslot (struct slot * pslot, u8 cmd)
 *---------------------------------------------------------------------*/
 static void get_hpc_access (void)
 {
-	down (&sem_hpcaccess);
+	mutex_lock(&sem_hpcaccess);
 }
 
 /*----------------------------------------------------------------------
@@ -786,7 +788,7 @@ static void get_hpc_access (void)
 *---------------------------------------------------------------------*/
 void free_hpc_access (void)
 {
-	up (&sem_hpcaccess);
+	mutex_unlock(&sem_hpcaccess);
 }
 
 /*----------------------------------------------------------------------
@@ -797,7 +799,7 @@ void free_hpc_access (void)
 void ibmphp_lock_operations (void)
 {
 	down (&semOperations);
-	to_debug = TRUE;
+	to_debug = 1;
 }
 
 /*----------------------------------------------------------------------
@@ -807,7 +809,7 @@ void ibmphp_unlock_operations (void)
 {
 	debug ("%s - Entry\n", __FUNCTION__);
 	up (&semOperations);
-	to_debug = FALSE;
+	to_debug = 0;
 	debug ("%s - Exit\n", __FUNCTION__);
 }
 
@@ -935,40 +937,40 @@ static int process_changeinstatus (struct slot *pslot, struct slot *poldslot)
 {
 	u8 status;
 	int rc = 0;
-	u8 disable = FALSE;
-	u8 update = FALSE;
+	u8 disable = 0;
+	u8 update = 0;
 
 	debug ("process_changeinstatus - Entry pslot[%p], poldslot[%p]\n", pslot, poldslot);
 
 	// bit 0 - HPC_SLOT_POWER
 	if ((pslot->status & 0x01) != (poldslot->status & 0x01))
-		update = TRUE;
+		update = 1;
 
 	// bit 1 - HPC_SLOT_CONNECT
 	// ignore
 
 	// bit 2 - HPC_SLOT_ATTN
 	if ((pslot->status & 0x04) != (poldslot->status & 0x04))
-		update = TRUE;
+		update = 1;
 
 	// bit 3 - HPC_SLOT_PRSNT2
 	// bit 4 - HPC_SLOT_PRSNT1
 	if (((pslot->status & 0x08) != (poldslot->status & 0x08))
 		|| ((pslot->status & 0x10) != (poldslot->status & 0x10)))
-		update = TRUE;
+		update = 1;
 
 	// bit 5 - HPC_SLOT_PWRGD
 	if ((pslot->status & 0x20) != (poldslot->status & 0x20))
 		// OFF -> ON: ignore, ON -> OFF: disable slot
 		if ((poldslot->status & 0x20) && (SLOT_CONNECT (poldslot->status) == HPC_SLOT_CONNECTED) && (SLOT_PRESENT (poldslot->status))) 
-			disable = TRUE;
+			disable = 1;
 
 	// bit 6 - HPC_SLOT_BUS_SPEED
 	// ignore
 
 	// bit 7 - HPC_SLOT_LATCH
 	if ((pslot->status & 0x80) != (poldslot->status & 0x80)) {
-		update = TRUE;
+		update = 1;
 		// OPEN -> CLOSE
 		if (pslot->status & 0x80) {
 			if (SLOT_PWRGD (pslot->status)) {
@@ -977,7 +979,7 @@ static int process_changeinstatus (struct slot *pslot, struct slot *poldslot)
 				msleep(1000);
 				rc = ibmphp_hpc_readslot (pslot, READ_SLOTSTATUS, &status);
 				if (SLOT_PWRGD (status))
-					update = TRUE;
+					update = 1;
 				else	// overwrite power in pslot to OFF
 					pslot->status &= ~HPC_SLOT_POWER;
 			}
@@ -985,17 +987,17 @@ static int process_changeinstatus (struct slot *pslot, struct slot *poldslot)
 		// CLOSE -> OPEN 
 		else if ((SLOT_PWRGD (poldslot->status) == HPC_SLOT_PWRGD_GOOD)
 			&& (SLOT_CONNECT (poldslot->status) == HPC_SLOT_CONNECTED) && (SLOT_PRESENT (poldslot->status))) {
-			disable = TRUE;
+			disable = 1;
 		}
 		// else - ignore
 	}
 	// bit 4 - HPC_SLOT_BLINK_ATTN
 	if ((pslot->ext_status & 0x08) != (poldslot->ext_status & 0x08))
-		update = TRUE;
+		update = 1;
 
 	if (disable) {
 		debug ("process_changeinstatus - disable slot\n");
-		pslot->flag = FALSE;
+		pslot->flag = 0;
 		rc = ibmphp_do_disable_slot (pslot);
 	}
 
@@ -1100,7 +1102,7 @@ void __exit ibmphp_hpc_stop_poll_thread (void)
 {
 	debug ("%s - Entry\n", __FUNCTION__);
 
-	ibmphp_shutdown = TRUE;
+	ibmphp_shutdown = 1;
 	debug ("before locking operations \n");
 	ibmphp_lock_operations ();
 	debug ("after locking operations \n");
@@ -1134,7 +1136,7 @@ static int hpc_wait_ctlr_notworking (int timeout, struct controller *ctlr_ptr, v
 				    u8 * pstatus)
 {
 	int rc = 0;
-	u8 done = FALSE;
+	u8 done = 0;
 
 	debug_polling ("hpc_wait_ctlr_notworking - Entry timeout[%d]\n", timeout);
 
@@ -1142,14 +1144,14 @@ static int hpc_wait_ctlr_notworking (int timeout, struct controller *ctlr_ptr, v
 		*pstatus = ctrl_read (ctlr_ptr, wpg_bbar, WPG_CTLR_INDEX);
 		if (*pstatus == HPC_ERROR) {
 			rc = HPC_ERROR;
-			done = TRUE;
+			done = 1;
 		}
 		if (CTLR_WORKING (*pstatus) == HPC_CTLR_WORKING_NO)
-			done = TRUE;
+			done = 1;
 		if (!done) {
 			msleep(1000);
 			if (timeout < 1) {
-				done = TRUE;
+				done = 1;
 				err ("HPCreadslot - Error ctlr timeout\n");
 				rc = HPC_ERROR;
 			} else
diff --git a/drivers/pci/hotplug/ibmphp_pci.c b/drivers/pci/hotplug/ibmphp_pci.c
index 155133fe5c12..d87a9e3eaeeb 100644
--- a/drivers/pci/hotplug/ibmphp_pci.c
+++ b/drivers/pci/hotplug/ibmphp_pci.c
@@ -164,12 +164,11 @@ int ibmphp_configure_card (struct pci_func *func, u8 slotno)
 						cleanup_count = 6;
 						goto error;
 					}
-					newfunc = kmalloc(sizeof(*newfunc), GFP_KERNEL);
+					newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL);
 					if (!newfunc) {
 						err ("out of system memory\n");
 						return -ENOMEM;
 					}
-					memset (newfunc, 0, sizeof (struct pci_func));
 					newfunc->busno = cur_func->busno;
 					newfunc->device = device;
 					cur_func->next = newfunc;
@@ -200,15 +199,14 @@ int ibmphp_configure_card (struct pci_func *func, u8 slotno)
 					}
 
 					pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number);
-					flag = FALSE;
+					flag = 0;
 					for (i = 0; i < 32; i++) {
 						if (func->devices[i]) {
-							newfunc = kmalloc(sizeof(*newfunc), GFP_KERNEL);
+							newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL);
 							if (!newfunc) {
 								err ("out of system memory\n");
 								return -ENOMEM;
 							}
-							memset (newfunc, 0, sizeof (struct pci_func));
 							newfunc->busno = sec_number;
 							newfunc->device = (u8) i;
 							for (j = 0; j < 4; j++)
@@ -228,16 +226,15 @@ int ibmphp_configure_card (struct pci_func *func, u8 slotno)
 								cleanup_count = 2;
 								goto error;
 							}
-							flag = TRUE;
+							flag = 1;
 						}
 					}
 
-					newfunc = kmalloc(sizeof(*newfunc), GFP_KERNEL);
+					newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL);
 					if (!newfunc) {
 						err ("out of system memory\n");
 						return -ENOMEM;
 					}
-					memset (newfunc, 0, sizeof (struct pci_func));
 					newfunc->busno = cur_func->busno;
 					newfunc->device = device;
 					for (j = 0; j < 4; j++)
@@ -275,16 +272,15 @@ int ibmphp_configure_card (struct pci_func *func, u8 slotno)
 						cur_func->busno, device, function);
 					pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number);
 					debug ("after configuring bridge..., sec_number = %x\n", sec_number);
-					flag = FALSE;
+					flag = 0;
 					for (i = 0; i < 32; i++) {
 						if (func->devices[i]) {
 							debug ("inside for loop, device is %x\n", i);
-							newfunc = kmalloc(sizeof(*newfunc), GFP_KERNEL);
+							newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL);
 							if (!newfunc) {
 								err (" out of system memory\n");
 								return -ENOMEM;
 							}
-							memset (newfunc, 0, sizeof (struct pci_func));
 							newfunc->busno = sec_number;
 							newfunc->device = (u8) i;
 							for (j = 0; j < 4; j++)
@@ -305,7 +301,7 @@ int ibmphp_configure_card (struct pci_func *func, u8 slotno)
 								cleanup_count = 2;
 								goto error;
 							}
-							flag = TRUE;
+							flag = 1;
 						}
 					}
 
@@ -405,13 +401,12 @@ static int configure_device (struct pci_func *func)
 
 			debug ("len[count] in IO %x, count %d\n", len[count], count);
 
-			io[count] = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
+			io[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 
 			if (!io[count]) {
 				err ("out of system memory\n");
 				return -ENOMEM;
 			}
-			memset (io[count], 0, sizeof (struct resource_node));
 			io[count]->type = IO;
 			io[count]->busno = func->busno;
 			io[count]->devfunc = PCI_DEVFN(func->device, func->function);
@@ -444,29 +439,27 @@ static int configure_device (struct pci_func *func)
 
 				debug ("len[count] in PFMEM %x, count %d\n", len[count], count);
 
-				pfmem[count] = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
+				pfmem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 				if (!pfmem[count]) {
 					err ("out of system memory\n");
 					return -ENOMEM;
 				}
-				memset (pfmem[count], 0, sizeof (struct resource_node));
 				pfmem[count]->type = PFMEM;
 				pfmem[count]->busno = func->busno;
 				pfmem[count]->devfunc = PCI_DEVFN(func->device,
 							func->function);
 				pfmem[count]->len = len[count];
-				pfmem[count]->fromMem = FALSE;
+				pfmem[count]->fromMem = 0;
 				if (ibmphp_check_resource (pfmem[count], 0) == 0) {
 					ibmphp_add_resource (pfmem[count]);
 					func->pfmem[count] = pfmem[count];
 				} else {
-					mem_tmp = kmalloc(sizeof(*mem_tmp), GFP_KERNEL);
+					mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL);
 					if (!mem_tmp) {
 						err ("out of system memory\n");
 						kfree (pfmem[count]);
 						return -ENOMEM;
 					}
-					memset (mem_tmp, 0, sizeof (struct resource_node));
 					mem_tmp->type = MEM;
 					mem_tmp->busno = pfmem[count]->busno;
 					mem_tmp->devfunc = pfmem[count]->devfunc;
@@ -474,7 +467,7 @@ static int configure_device (struct pci_func *func)
 					debug ("there's no pfmem... going into mem.\n");
 					if (ibmphp_check_resource (mem_tmp, 0) == 0) {
 						ibmphp_add_resource (mem_tmp);
-						pfmem[count]->fromMem = TRUE;
+						pfmem[count]->fromMem = 1;
 						pfmem[count]->rangeno = mem_tmp->rangeno;
 						pfmem[count]->start = mem_tmp->start;
 						pfmem[count]->end = mem_tmp->end;
@@ -512,12 +505,11 @@ static int configure_device (struct pci_func *func)
 
 				debug ("len[count] in Mem %x, count %d\n", len[count], count);
 
-				mem[count] = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
+				mem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 				if (!mem[count]) {
 					err ("out of system memory\n");
 					return -ENOMEM;
 				}
-				memset (mem[count], 0, sizeof (struct resource_node));
 				mem[count]->type = MEM;
 				mem[count]->busno = func->busno;
 				mem[count]->devfunc = PCI_DEVFN(func->device,
@@ -579,11 +571,11 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
 	u16 pfmem_base;
 	u32 bar[2];
 	u32 len[2];
-	u8 flag_io = FALSE;
-	u8 flag_mem = FALSE;
-	u8 flag_pfmem = FALSE;
-	u8 need_io_upper = FALSE;
-	u8 need_pfmem_upper = FALSE;
+	u8 flag_io = 0;
+	u8 flag_mem = 0;
+	u8 flag_pfmem = 0;
+	u8 need_io_upper = 0;
+	u8 need_pfmem_upper = 0;
 	struct res_needed *amount_needed = NULL;
 	struct resource_node *io = NULL;
 	struct resource_node *bus_io[2] = {NULL, NULL};
@@ -677,14 +669,13 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
 
 			debug ("len[count] in IO = %x\n", len[count]);
 
-			bus_io[count] = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
+			bus_io[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 		
 			if (!bus_io[count]) {
 				err ("out of system memory\n");
 				retval = -ENOMEM;
 				goto error;
 			}
-			memset (bus_io[count], 0, sizeof (struct resource_node));
 			bus_io[count]->type = IO;
 			bus_io[count]->busno = func->busno;
 			bus_io[count]->devfunc = PCI_DEVFN(func->device,
@@ -711,37 +702,35 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
 
 				debug ("len[count] in PFMEM = %x\n", len[count]);
 
-				bus_pfmem[count] = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
+				bus_pfmem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 				if (!bus_pfmem[count]) {
 					err ("out of system memory\n");
 					retval = -ENOMEM;
 					goto error;
 				}
-				memset (bus_pfmem[count], 0, sizeof (struct resource_node));
 				bus_pfmem[count]->type = PFMEM;
 				bus_pfmem[count]->busno = func->busno;
 				bus_pfmem[count]->devfunc = PCI_DEVFN(func->device,
 							func->function);
 				bus_pfmem[count]->len = len[count];
-				bus_pfmem[count]->fromMem = FALSE;
+				bus_pfmem[count]->fromMem = 0;
 				if (ibmphp_check_resource (bus_pfmem[count], 0) == 0) {
 					ibmphp_add_resource (bus_pfmem[count]);
 					func->pfmem[count] = bus_pfmem[count];
 				} else {
-					mem_tmp = kmalloc(sizeof(*mem_tmp), GFP_KERNEL);
+					mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL);
 					if (!mem_tmp) {
 						err ("out of system memory\n");
 						retval = -ENOMEM;
 						goto error;
 					}
-					memset (mem_tmp, 0, sizeof (struct resource_node));
 					mem_tmp->type = MEM;
 					mem_tmp->busno = bus_pfmem[count]->busno;
 					mem_tmp->devfunc = bus_pfmem[count]->devfunc;
 					mem_tmp->len = bus_pfmem[count]->len;
 					if (ibmphp_check_resource (mem_tmp, 0) == 0) {
 						ibmphp_add_resource (mem_tmp);
-						bus_pfmem[count]->fromMem = TRUE;
+						bus_pfmem[count]->fromMem = 1;
 						bus_pfmem[count]->rangeno = mem_tmp->rangeno;
 						ibmphp_add_pfmem_from_mem (bus_pfmem[count]);
 						func->pfmem[count] = bus_pfmem[count];
@@ -770,13 +759,12 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
 
 				debug ("len[count] in Memory is %x\n", len[count]);
 
-				bus_mem[count] = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
+				bus_mem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 				if (!bus_mem[count]) {
 					err ("out of system memory\n");
 					retval = -ENOMEM;
 					goto error;
 				}
-				memset (bus_mem[count], 0, sizeof (struct resource_node));
 				bus_mem[count]->type = MEM;
 				bus_mem[count]->busno = func->busno;
 				bus_mem[count]->devfunc = PCI_DEVFN(func->device,
@@ -838,17 +826,16 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
 
 	if (!amount_needed->io) {
 		debug ("it doesn't want IO?\n");
-		flag_io = TRUE;
+		flag_io = 1;
 	} else {
 		debug ("it wants %x IO behind the bridge\n", amount_needed->io);
-		io = kmalloc(sizeof(*io), GFP_KERNEL);
+		io = kzalloc(sizeof(*io), GFP_KERNEL);
 		
 		if (!io) {
 			err ("out of system memory\n");
 			retval = -ENOMEM;
 			goto error;
 		}
-		memset (io, 0, sizeof (struct resource_node));
 		io->type = IO;
 		io->busno = func->busno;
 		io->devfunc = PCI_DEVFN(func->device, func->function);
@@ -856,71 +843,68 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
 		if (ibmphp_check_resource (io, 1) == 0) {
 			debug ("were we able to add io\n");
 			ibmphp_add_resource (io);
-			flag_io = TRUE;
+			flag_io = 1;
 		}
 	}
 
 	if (!amount_needed->mem) {
 		debug ("it doesn't want n.e.memory?\n");
-		flag_mem = TRUE;
+		flag_mem = 1;
 	} else {
 		debug ("it wants %x memory behind the bridge\n", amount_needed->mem);
-		mem = kmalloc(sizeof(*mem), GFP_KERNEL);
+		mem = kzalloc(sizeof(*mem), GFP_KERNEL);
 		if (!mem) {
 			err ("out of system memory\n");
 			retval = -ENOMEM;
 			goto error;
 		}
-		memset (mem, 0, sizeof (struct resource_node));
 		mem->type = MEM;
 		mem->busno = func->busno;
 		mem->devfunc = PCI_DEVFN(func->device, func->function);
 		mem->len = amount_needed->mem;
 		if (ibmphp_check_resource (mem, 1) == 0) {
 			ibmphp_add_resource (mem);
-			flag_mem = TRUE;
+			flag_mem = 1;
 			debug ("were we able to add mem\n");
 		}
 	}
 
 	if (!amount_needed->pfmem) {
 		debug ("it doesn't want n.e.pfmem mem?\n");
-		flag_pfmem = TRUE;
+		flag_pfmem = 1;
 	} else {
 		debug ("it wants %x pfmemory behind the bridge\n", amount_needed->pfmem);
-		pfmem = kmalloc(sizeof(*pfmem), GFP_KERNEL);
+		pfmem = kzalloc(sizeof(*pfmem), GFP_KERNEL);
 		if (!pfmem) {
 			err ("out of system memory\n");
 			retval = -ENOMEM;
 			goto error;
 		}
-		memset (pfmem, 0, sizeof (struct resource_node));
 		pfmem->type = PFMEM;
 		pfmem->busno = func->busno;
 		pfmem->devfunc = PCI_DEVFN(func->device, func->function);
 		pfmem->len = amount_needed->pfmem;
-		pfmem->fromMem = FALSE;
+		pfmem->fromMem = 0;
 		if (ibmphp_check_resource (pfmem, 1) == 0) {
 			ibmphp_add_resource (pfmem);
-			flag_pfmem = TRUE;
+			flag_pfmem = 1;
 		} else {
-			mem_tmp = kmalloc(sizeof(*mem_tmp), GFP_KERNEL);
+			mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL);
 			if (!mem_tmp) {
 				err ("out of system memory\n");
 				retval = -ENOMEM;
 				goto error;
 			}
-			memset (mem_tmp, 0, sizeof (struct resource_node));
 			mem_tmp->type = MEM;
 			mem_tmp->busno = pfmem->busno;
 			mem_tmp->devfunc = pfmem->devfunc;
 			mem_tmp->len = pfmem->len;
 			if (ibmphp_check_resource (mem_tmp, 1) == 0) {
 				ibmphp_add_resource (mem_tmp);
-				pfmem->fromMem = TRUE;
+				pfmem->fromMem = 1;
 				pfmem->rangeno = mem_tmp->rangeno;
 				ibmphp_add_pfmem_from_mem (pfmem);
-				flag_pfmem = TRUE;
+				flag_pfmem = 1;
 			}
 		}
 	}
@@ -936,13 +920,12 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
 		 */
 		bus = ibmphp_find_res_bus (sec_number);
 		if (!bus) {
-			bus = kmalloc(sizeof(*bus), GFP_KERNEL);
+			bus = kzalloc(sizeof(*bus), GFP_KERNEL);
 			if (!bus) {
 				err ("out of system memory\n");
 				retval = -ENOMEM;
 				goto error;
 			}
-			memset (bus, 0, sizeof (struct bus_node));
 			bus->busno = sec_number;
 			debug ("b4 adding new bus\n");
 			rc = add_new_bus (bus, io, mem, pfmem, func->busno);
@@ -967,11 +950,11 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
 
 		if ((io_base & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32) {
 			debug ("io 32\n");
-			need_io_upper = TRUE;
+			need_io_upper = 1;
 		}
 		if ((pfmem_base & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
 			debug ("pfmem 64\n");
-			need_pfmem_upper = TRUE;
+			need_pfmem_upper = 1;
 		}
 
 		if (bus->noIORanges) {
@@ -1111,10 +1094,9 @@ static struct res_needed *scan_behind_bridge (struct pci_func * func, u8 busno)
 	};
 	struct res_needed *amount;
 
-	amount = kmalloc(sizeof(*amount), GFP_KERNEL);
+	amount = kzalloc(sizeof(*amount), GFP_KERNEL);
 	if (amount == NULL)
 		return NULL;
-	memset (amount, 0, sizeof (struct res_needed));
 
 	ibmphp_pci_bus->number = busno;
 
@@ -1137,7 +1119,7 @@ static struct res_needed *scan_behind_bridge (struct pci_func * func, u8 busno)
 				debug ("hdr_type behind the bridge is %x\n", hdr_type);
 				if (hdr_type & PCI_HEADER_TYPE_BRIDGE) {
 					err ("embedded bridges not supported for hot-plugging.\n");
-					amount->not_correct = TRUE;
+					amount->not_correct = 1;
 					return amount;
 				}
 
@@ -1145,12 +1127,12 @@ static struct res_needed *scan_behind_bridge (struct pci_func * func, u8 busno)
 				if (class == PCI_CLASS_NOT_DEFINED_VGA) {
 					err ("The device %x is VGA compatible and as is not supported for hot plugging. "
 					     "Please choose another device.\n", device);
-					amount->not_correct = TRUE;
+					amount->not_correct = 1;
 					return amount;
 				} else if (class == PCI_CLASS_DISPLAY_VGA) {
 					err ("The device %x is not supported for hot plugging. "
 					     "Please choose another device.\n", device);
-					amount->not_correct = TRUE;
+					amount->not_correct = 1;
 					return amount;
 				}
 
@@ -1210,9 +1192,9 @@ static struct res_needed *scan_behind_bridge (struct pci_func * func, u8 busno)
 	}	/* end for */
 
 	if (!howmany)
-		amount->not_correct = TRUE;
+		amount->not_correct = 1;
 	else
-		amount->not_correct = FALSE;
+		amount->not_correct = 0;
 	if ((amount->io) && (amount->io < IOBRIDGE))
 		amount->io = IOBRIDGE;
 	if ((amount->mem) && (amount->mem < MEMBRIDGE))
@@ -1672,12 +1654,11 @@ static int add_new_bus (struct bus_node *bus, struct resource_node *io, struct r
 		list_add (&bus->bus_list, &cur_bus->bus_list);
 	}
 	if (io) {
-		io_range = kmalloc(sizeof(*io_range), GFP_KERNEL);
+		io_range = kzalloc(sizeof(*io_range), GFP_KERNEL);
 		if (!io_range) {
 			err ("out of system memory\n");
 			return -ENOMEM;
 		}
-		memset (io_range, 0, sizeof (struct range_node));
 		io_range->start = io->start;
 		io_range->end = io->end;
 		io_range->rangeno = 1;
@@ -1685,12 +1666,11 @@ static int add_new_bus (struct bus_node *bus, struct resource_node *io, struct r
 		bus->rangeIO = io_range;
 	}
 	if (mem) {
-		mem_range = kmalloc(sizeof(*mem_range), GFP_KERNEL);
+		mem_range = kzalloc(sizeof(*mem_range), GFP_KERNEL);
 		if (!mem_range) {
 			err ("out of system memory\n");
 			return -ENOMEM;
 		}
-		memset (mem_range, 0, sizeof (struct range_node));
 		mem_range->start = mem->start;
 		mem_range->end = mem->end;
 		mem_range->rangeno = 1;
@@ -1698,12 +1678,11 @@ static int add_new_bus (struct bus_node *bus, struct resource_node *io, struct r
 		bus->rangeMem = mem_range;
 	}
 	if (pfmem) {
-		pfmem_range = kmalloc(sizeof(*pfmem_range), GFP_KERNEL);
+		pfmem_range = kzalloc(sizeof(*pfmem_range), GFP_KERNEL);
 		if (!pfmem_range) {	
 			err ("out of system memory\n");
 			return -ENOMEM;
 		}
-		memset (pfmem_range, 0, sizeof (struct range_node));
 		pfmem_range->start = pfmem->start;
 		pfmem_range->end = pfmem->end;
 		pfmem_range->rangeno = 1;
diff --git a/drivers/pci/hotplug/ibmphp_res.c b/drivers/pci/hotplug/ibmphp_res.c
index 9c224c94d698..5636b1ac2a2e 100644
--- a/drivers/pci/hotplug/ibmphp_res.c
+++ b/drivers/pci/hotplug/ibmphp_res.c
@@ -55,13 +55,12 @@ static struct bus_node * __init alloc_error_bus (struct ebda_pci_rsrc * curr, u8
 		return NULL;
 	}
 
-	newbus = kmalloc (sizeof (struct bus_node), GFP_KERNEL);
+	newbus = kzalloc(sizeof(struct bus_node), GFP_KERNEL);
 	if (!newbus) {
 		err ("out of system memory\n");
 		return NULL;
 	}
 
-	memset (newbus, 0, sizeof (struct bus_node));
 	if (flag)
 		newbus->busno = busno;
 	else
@@ -79,12 +78,11 @@ static struct resource_node * __init alloc_resources (struct ebda_pci_rsrc * cur
 		return NULL;
 	}
 
-	rs = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
+	rs = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 	if (!rs) {
 		err ("out of system memory\n");
 		return NULL;
 	}
-	memset (rs, 0, sizeof (struct resource_node));
 	rs->busno = curr->bus_num;
 	rs->devfunc = curr->dev_fun;
 	rs->start = curr->start_addr;
@@ -100,12 +98,11 @@ static int __init alloc_bus_range (struct bus_node **new_bus, struct range_node
 	u8 num_ranges = 0;
 
 	if (first_bus) {
-		newbus = kmalloc (sizeof (struct bus_node), GFP_KERNEL);
+		newbus = kzalloc(sizeof(struct bus_node), GFP_KERNEL);
 		if (!newbus) {
 			err ("out of system memory.\n");
 			return -ENOMEM;
 		}
-		memset (newbus, 0, sizeof (struct bus_node));
 		newbus->busno = curr->bus_num;
 	} else {
 		newbus = *new_bus;
@@ -122,14 +119,13 @@ static int __init alloc_bus_range (struct bus_node **new_bus, struct range_node
 		}
 	}
 
-	newrange = kmalloc (sizeof (struct range_node), GFP_KERNEL);
+	newrange = kzalloc(sizeof(struct range_node), GFP_KERNEL);
 	if (!newrange) {
 		if (first_bus)
 			kfree (newbus);
 		err ("out of system memory\n");
 		return -ENOMEM;
 	}
-	memset (newrange, 0, sizeof (struct range_node));
 	newrange->start = curr->start_addr;
 	newrange->end = curr->end_addr;
 		
@@ -329,7 +325,7 @@ int __init ibmphp_rsrc_init (void)
 				if (!new_pfmem)
 					return -ENOMEM;
 				new_pfmem->type = PFMEM;
-				new_pfmem->fromMem = FALSE;
+				new_pfmem->fromMem = 0;
 				if (ibmphp_add_resource (new_pfmem) < 0) {
 					newbus = alloc_error_bus (curr, 0, 0);
 					if (!newbus)
@@ -466,7 +462,7 @@ static int add_range (int type, struct range_node *range, struct bus_node *bus_c
 static void update_resources (struct bus_node *bus_cur, int type, int rangeno)
 {
 	struct resource_node *res = NULL;
-	u8 eol = FALSE;	/* end of list indicator */
+	u8 eol = 0;	/* end of list indicator */
 
 	switch (type) {
 		case MEM:
@@ -492,7 +488,7 @@ static void update_resources (struct bus_node *bus_cur, int type, int rangeno)
 			else if (res->nextRange)
 				res = res->nextRange;
 			else {
-				eol = TRUE;
+				eol = 1;
 				break;
 			}
 		}
@@ -983,7 +979,7 @@ int ibmphp_check_resource (struct resource_node *res, u8 bridge)
 	int noranges = 0;
 	u32 tmp_start;		/* this is to make sure start address is divisible by the length needed */
 	u32 tmp_divide;
-	u8 flag = FALSE;
+	u8 flag = 0;
 
 	if (!res)
 		return -EINVAL;
@@ -1050,17 +1046,17 @@ int ibmphp_check_resource (struct resource_node *res, u8 bridge)
 
 					if ((range->start % tmp_divide) == 0) {
 						/* just perfect, starting address is divisible by length */
-						flag = TRUE;
+						flag = 1;
 						len_cur = len_tmp;
 						start_cur = range->start;
 					} else {
 						/* Needs adjusting */
 						tmp_start = range->start;
-						flag = FALSE;
+						flag = 0;
 
 						while ((len_tmp = res_cur->start - 1 - tmp_start) >= res->len) {
 							if ((tmp_start % tmp_divide) == 0) {
-								flag = TRUE;
+								flag = 1;
 								len_cur = len_tmp;
 								start_cur = tmp_start;
 								break;
@@ -1089,17 +1085,17 @@ int ibmphp_check_resource (struct resource_node *res, u8 bridge)
 
 					if (((res_cur->end + 1) % tmp_divide) == 0) {
 						/* just perfect, starting address is divisible by length */
-						flag = TRUE;
+						flag = 1;
 						len_cur = len_tmp;
 						start_cur = res_cur->end + 1;
 					} else {
 						/* Needs adjusting */
 						tmp_start = res_cur->end + 1;
-						flag = FALSE;
+						flag = 0;
 
 						while ((len_tmp = range->end - tmp_start) >= res->len) {
 							if ((tmp_start % tmp_divide) == 0) {
-								flag = TRUE;
+								flag = 1;
 								len_cur = len_tmp;
 								start_cur = tmp_start;
 								break;
@@ -1127,17 +1123,17 @@ int ibmphp_check_resource (struct resource_node *res, u8 bridge)
 					if ((len_tmp < len_cur) || (len_cur == 0)) {
 						if ((range->start % tmp_divide) == 0) {	
 							/* just perfect, starting address is divisible by length */
-							flag = TRUE;
+							flag = 1;
 							len_cur = len_tmp;
 							start_cur = range->start;
 						} else {
 							/* Needs adjusting */
 							tmp_start = range->start;
-							flag = FALSE;
+							flag = 0;
 
 							while ((len_tmp = res_cur->start - 1 - tmp_start) >= res->len) {
 								if ((tmp_start % tmp_divide) == 0) {
-									flag = TRUE;
+									flag = 1;
 									len_cur = len_tmp;
 									start_cur = tmp_start;
 									break;
@@ -1162,17 +1158,17 @@ int ibmphp_check_resource (struct resource_node *res, u8 bridge)
 					if ((len_tmp < len_cur) || (len_cur == 0)) {
 						if (((res_prev->end + 1) % tmp_divide) == 0) {
 							/* just perfect, starting address's divisible by length */
-							flag = TRUE;
+							flag = 1;
 							len_cur = len_tmp;
 							start_cur = res_prev->end + 1;
 						} else {
 							/* Needs adjusting */
 							tmp_start = res_prev->end + 1;
-							flag = FALSE;
+							flag = 0;
 
 							while ((len_tmp = res_cur->start - 1 - tmp_start) >= res->len) {
 								if ((tmp_start % tmp_divide) == 0) {
-									flag = TRUE;
+									flag = 1;
 									len_cur = len_tmp;
 									start_cur = tmp_start;
 									break;
@@ -1221,17 +1217,17 @@ int ibmphp_check_resource (struct resource_node *res, u8 bridge)
 				if ((len_tmp < len_cur) || (len_cur == 0)) {
 					if ((range->start % tmp_divide) == 0) {
 						/* just perfect, starting address's divisible by length */
-						flag = TRUE;
+						flag = 1;
 						len_cur = len_tmp;
 						start_cur = range->start;
 					} else {
 						/* Needs adjusting */
 						tmp_start = range->start;
-						flag = FALSE;
+						flag = 0;
 
 						while ((len_tmp = range->end - tmp_start) >= res->len) {
 							if ((tmp_start % tmp_divide) == 0) {
-								flag = TRUE;
+								flag = 1;
 								len_cur = len_tmp;
 								start_cur = tmp_start;
 								break;
@@ -1285,17 +1281,17 @@ int ibmphp_check_resource (struct resource_node *res, u8 bridge)
 					if ((len_tmp < len_cur) || (len_cur == 0)) {
 						if ((range->start % tmp_divide) == 0) {
 							/* just perfect, starting address's divisible by length */
-							flag = TRUE;
+							flag = 1;
 							len_cur = len_tmp;
 							start_cur = range->start;
 						} else {
 							/* Needs adjusting */
 							tmp_start = range->start;
-							flag = FALSE;
+							flag = 0;
 
 							while ((len_tmp = range->end - tmp_start) >= res->len) {
 								if ((tmp_start % tmp_divide) == 0) {
-									flag = TRUE;
+									flag = 1;
 									len_cur = len_tmp;
 									start_cur = tmp_start;
 									break;
@@ -1688,7 +1684,7 @@ static int __init once_over (void)
 		bus_cur = list_entry (tmp, struct bus_node, bus_list);
 		if ((!bus_cur->rangePFMem) && (bus_cur->firstPFMem)) {
 			for (pfmem_cur = bus_cur->firstPFMem, pfmem_prev = NULL; pfmem_cur; pfmem_prev = pfmem_cur, pfmem_cur = pfmem_cur->next) {
-				pfmem_cur->fromMem = TRUE;
+				pfmem_cur->fromMem = 1;
 				if (pfmem_prev)
 					pfmem_prev->next = pfmem_cur->next;
 				else
@@ -1705,12 +1701,11 @@ static int __init once_over (void)
 
 				bus_cur->firstPFMemFromMem = pfmem_cur;
 
-				mem = kmalloc (sizeof (struct resource_node), GFP_KERNEL);		
+				mem = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 				if (!mem) {
 					err ("out of system memory\n");
 					return -ENOMEM;
 				}
-				memset (mem, 0, sizeof (struct resource_node));
 				mem->type = MEM;
 				mem->busno = pfmem_cur->busno;
 				mem->devfunc = pfmem_cur->devfunc;
@@ -1994,12 +1989,11 @@ static int __init update_bridge_ranges (struct bus_node **bus)
 						end_address |= (upper_io_end << 16);
 
 						if ((start_address) && (start_address <= end_address)) {
-							range = kmalloc (sizeof (struct range_node), GFP_KERNEL);
+							range = kzalloc(sizeof(struct range_node), GFP_KERNEL);
 							if (!range) {
 								err ("out of system memory\n");
 								return -ENOMEM;
 							}
-							memset (range, 0, sizeof (struct range_node));
 							range->start = start_address;
 							range->end = end_address + 0xfff;
 
@@ -2020,13 +2014,12 @@ static int __init update_bridge_ranges (struct bus_node **bus)
 							fix_resources (bus_sec);
 
 							if (ibmphp_find_resource (bus_cur, start_address, &io, IO)) {
-								io = kmalloc (sizeof (struct resource_node), GFP_KERNEL);							
+								io = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 								if (!io) {
 									kfree (range);
 									err ("out of system memory\n");
 									return -ENOMEM;
 								}
-								memset (io, 0, sizeof (struct resource_node));
 								io->type = IO;
 								io->busno = bus_cur->busno;
 								io->devfunc = ((device << 3) | (function & 0x7));
@@ -2045,12 +2038,11 @@ static int __init update_bridge_ranges (struct bus_node **bus)
 
 						if ((start_address) && (start_address <= end_address)) {
 
-							range = kmalloc (sizeof (struct range_node), GFP_KERNEL);
+							range = kzalloc(sizeof(struct range_node), GFP_KERNEL);
 							if (!range) {
 								err ("out of system memory\n");
 								return -ENOMEM;
 							}
-							memset (range, 0, sizeof (struct range_node));
 							range->start = start_address;
 							range->end = end_address + 0xfffff;
 
@@ -2072,13 +2064,12 @@ static int __init update_bridge_ranges (struct bus_node **bus)
 							fix_resources (bus_sec);
 
 							if (ibmphp_find_resource (bus_cur, start_address, &mem, MEM)) {
-								mem = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
+								mem = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 								if (!mem) {
 									kfree (range);
 									err ("out of system memory\n");
 									return -ENOMEM;
 								}
-								memset (mem, 0, sizeof (struct resource_node));
 								mem->type = MEM;
 								mem->busno = bus_cur->busno;
 								mem->devfunc = ((device << 3) | (function & 0x7));
@@ -2101,12 +2092,11 @@ static int __init update_bridge_ranges (struct bus_node **bus)
 
 						if ((start_address) && (start_address <= end_address)) {
 
-							range = kmalloc (sizeof (struct range_node), GFP_KERNEL);
+							range = kzalloc(sizeof(struct range_node), GFP_KERNEL);
 							if (!range) {
 								err ("out of system memory\n");
 								return -ENOMEM;
 							}
-							memset (range, 0, sizeof (struct range_node));
 							range->start = start_address;
 							range->end = end_address + 0xfffff;
 
@@ -2127,20 +2117,19 @@ static int __init update_bridge_ranges (struct bus_node **bus)
 
 							fix_resources (bus_sec);
 							if (ibmphp_find_resource (bus_cur, start_address, &pfmem, PFMEM)) {
-								pfmem = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
+								pfmem = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
 								if (!pfmem) {
 									kfree (range);
 									err ("out of system memory\n");
 									return -ENOMEM;
 								}
-								memset (pfmem, 0, sizeof (struct resource_node));
 								pfmem->type = PFMEM;
 								pfmem->busno = bus_cur->busno;
 								pfmem->devfunc = ((device << 3) | (function & 0x7));
 								pfmem->start = start_address;
 								pfmem->end = end_address + 0xfffff;
 								pfmem->len = pfmem->end - pfmem->start + 1;
-								pfmem->fromMem = FALSE;
+								pfmem->fromMem = 0;
 
 								ibmphp_add_resource (pfmem);
 							}
diff --git a/drivers/pci/hotplug/pci_hotplug.h b/drivers/pci/hotplug/pci_hotplug.h
index 88d44f7fef29..eb0d01d47236 100644
--- a/drivers/pci/hotplug/pci_hotplug.h
+++ b/drivers/pci/hotplug/pci_hotplug.h
@@ -176,5 +176,21 @@ extern int pci_hp_change_slot_info	(struct hotplug_slot *slot,
 					 struct hotplug_slot_info *info);
 extern struct subsystem pci_hotplug_slots_subsys;
 
+struct hotplug_params {
+	u8 cache_line_size;
+	u8 latency_timer;
+	u8 enable_serr;
+	u8 enable_perr;
+};
+
+#ifdef CONFIG_ACPI
+#include <acpi/acpi.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/actypes.h>
+extern acpi_status acpi_run_oshp(acpi_handle handle);
+extern acpi_status acpi_get_hp_params_from_firmware(struct pci_dev *dev,
+				struct hotplug_params *hpp);
+int acpi_root_bridge(acpi_handle handle);
+#endif
 #endif
 
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 0aac6a61337d..92c1f0f1e1ad 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -34,6 +34,7 @@
 #include <linux/delay.h>
 #include <linux/sched.h>		/* signal_pending() */
 #include <linux/pcieport_if.h>
+#include <linux/mutex.h>
 #include "pci_hotplug.h"
 
 #define MY_NAME	"pciehp"
@@ -49,12 +50,6 @@ extern int pciehp_force;
 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
 
-struct hotplug_params {
-	u8 cache_line_size;
-	u8 latency_timer;
-	u8 enable_serr;
-	u8 enable_perr;
-};
 
 struct slot {
 	struct slot *next;
@@ -96,7 +91,7 @@ struct php_ctlr_state_s {
 #define MAX_EVENTS		10
 struct controller {
 	struct controller *next;
-	struct semaphore crit_sect;	/* critical section semaphore */
+	struct mutex crit_sect;		/* critical section mutex */
 	struct php_ctlr_state_s *hpc_ctlr_handle; /* HPC controller handle */
 	int num_slots;			/* Number of slots on ctlr */
 	int slot_num_inc;		/* 1 or -1 */
@@ -191,9 +186,6 @@ extern u8	pciehp_handle_power_fault	(u8 hp_slot, void *inst_id);
 /* pci functions */
 extern int	pciehp_configure_device		(struct slot *p_slot);
 extern int	pciehp_unconfigure_device	(struct slot *p_slot);
-extern int	pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev);
-extern void	pciehp_get_hp_params_from_firmware(struct pci_dev *dev,
-	       	struct hotplug_params *hpp);
 
 
 
@@ -285,4 +277,19 @@ struct hpc_ops {
 	int	(*check_lnk_status)	(struct controller *ctrl);
 };
 
+
+#ifdef CONFIG_ACPI
+#define pciehp_get_hp_hw_control_from_firmware(dev) \
+	pciehp_acpi_get_hp_hw_control_from_firmware(dev)
+static inline int pciehp_get_hp_params_from_firmware(struct pci_dev *dev,
+			struct hotplug_params *hpp)
+{
+	if (ACPI_FAILURE(acpi_get_hp_params_from_firmware(dev, hpp)))
+		return -ENODEV;
+	return 0;
+}
+#else
+#define pciehp_get_hp_hw_control_from_firmware(dev) 	0
+#define pciehp_get_hp_params_from_firmware(dev, hpp)    (-ENODEV)
+#endif 				/* CONFIG_ACPI */
 #endif				/* _PCIEHP_H */
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 4fb569018a24..601cf9045b20 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -117,27 +117,23 @@ static int init_slots(struct controller *ctrl)
 	slot_number = ctrl->first_slot;
 
 	while (number_of_slots) {
-		slot = kmalloc(sizeof(*slot), GFP_KERNEL);
+		slot = kzalloc(sizeof(*slot), GFP_KERNEL);
 		if (!slot)
 			goto error;
 
-		memset(slot, 0, sizeof(struct slot));
 		slot->hotplug_slot =
-				kmalloc(sizeof(*(slot->hotplug_slot)),
+				kzalloc(sizeof(*(slot->hotplug_slot)),
 						GFP_KERNEL);
 		if (!slot->hotplug_slot)
 			goto error_slot;
 		hotplug_slot = slot->hotplug_slot;
-		memset(hotplug_slot, 0, sizeof(struct hotplug_slot));
 
 		hotplug_slot->info =
-			kmalloc(sizeof(*(hotplug_slot->info)),
+			kzalloc(sizeof(*(hotplug_slot->info)),
 						GFP_KERNEL);
 		if (!hotplug_slot->info)
 			goto error_hpslot;
 		hotplug_slot_info = hotplug_slot->info;
-		memset(hotplug_slot_info, 0,
-					sizeof(struct hotplug_slot_info));
 		hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
 		if (!hotplug_slot->name)
 			goto error_info;
@@ -373,12 +369,11 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	u8 value;
 	struct pci_dev *pdev;
 	
-	ctrl = kmalloc(sizeof(*ctrl), GFP_KERNEL);
+	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
 	if (!ctrl) {
 		err("%s : out of memory\n", __FUNCTION__);
 		goto err_out_none;
 	}
-	memset(ctrl, 0, sizeof(struct controller));
 
 	pdev = dev->port;
 	ctrl->pci_dev = pdev;
@@ -439,7 +434,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	}
 
 	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */
 	
@@ -447,7 +442,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 		rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/
 		if (rc) {
 			/* Done with exclusive hardware access */
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			goto err_out_free_ctrl_slot;
 		} else
 			/* Wait for the command to complete */
@@ -455,7 +450,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	}
 
 	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	return 0;
 
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 83c4b865718a..33d198768356 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -229,13 +229,13 @@ u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id)
 static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 {
 	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	/* turn off slot, turn on Amber LED, turn off Green LED if supported*/
 	if (POWER_CTRL(ctrl->ctrlcap)) {
 		if (pslot->hpc_ops->power_off_slot(pslot)) {   
 			err("%s: Issue of Slot Power Off command failed\n", __FUNCTION__);
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return;
 		}
 		wait_for_ctrl_irq (ctrl);
@@ -249,14 +249,14 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 	if (ATTN_LED(ctrl->ctrlcap)) { 
 		if (pslot->hpc_ops->set_attention_status(pslot, 1)) {   
 			err("%s: Issue of Set Attention Led command failed\n", __FUNCTION__);
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return;
 		}
 		wait_for_ctrl_irq (ctrl);
 	}
 
 	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 }
 
 /**
@@ -279,13 +279,13 @@ static int board_added(struct slot *p_slot)
 			ctrl->slot_device_offset, hp_slot);
 
 	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	if (POWER_CTRL(ctrl->ctrlcap)) {
 		/* Power on slot */
 		rc = p_slot->hpc_ops->power_on_slot(p_slot);
 		if (rc) {
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return -1;
 		}
 
@@ -301,7 +301,7 @@ static int board_added(struct slot *p_slot)
 	}
 
 	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	/* Wait for ~1 second */
 	wait_for_ctrl_irq (ctrl);
@@ -335,7 +335,7 @@ static int board_added(struct slot *p_slot)
 		pci_fixup_device(pci_fixup_final, ctrl->pci_dev);
 	if (PWR_LED(ctrl->ctrlcap)) {
 		/* Wait for exclusive access to hardware */
-  		down(&ctrl->crit_sect);
+  		mutex_lock(&ctrl->crit_sect);
 
   		p_slot->hpc_ops->green_led_on(p_slot);
   
@@ -343,7 +343,7 @@ static int board_added(struct slot *p_slot)
   		wait_for_ctrl_irq (ctrl);
   	
   		/* Done with exclusive hardware access */
-  		up(&ctrl->crit_sect);
+  		mutex_unlock(&ctrl->crit_sect);
   	}
 	return 0;
 
@@ -375,14 +375,14 @@ static int remove_board(struct slot *p_slot)
 	dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
 
 	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	if (POWER_CTRL(ctrl->ctrlcap)) {
 		/* power off slot */
 		rc = p_slot->hpc_ops->power_off_slot(p_slot);
 		if (rc) {
 			err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return rc;
 		}
 		/* Wait for the command to complete */
@@ -398,7 +398,7 @@ static int remove_board(struct slot *p_slot)
 	}
 
 	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	return 0;
 }
@@ -445,7 +445,7 @@ static void pciehp_pushbutton_thread(unsigned long slot)
 
 		if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) {
 			/* Wait for exclusive access to hardware */
-			down(&p_slot->ctrl->crit_sect);
+			mutex_lock(&p_slot->ctrl->crit_sect);
 
 			p_slot->hpc_ops->green_led_off(p_slot);
 
@@ -453,7 +453,7 @@ static void pciehp_pushbutton_thread(unsigned long slot)
 			wait_for_ctrl_irq (p_slot->ctrl);
 
 			/* Done with exclusive hardware access */
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 		}
 		p_slot->state = STATIC_STATE;
 	}
@@ -495,7 +495,7 @@ static void pciehp_surprise_rm_thread(unsigned long slot)
 
 		if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) {
 			/* Wait for exclusive access to hardware */
-			down(&p_slot->ctrl->crit_sect);
+			mutex_lock(&p_slot->ctrl->crit_sect);
 
 			p_slot->hpc_ops->green_led_off(p_slot);
 
@@ -503,7 +503,7 @@ static void pciehp_surprise_rm_thread(unsigned long slot)
 			wait_for_ctrl_irq (p_slot->ctrl);
 
 			/* Done with exclusive hardware access */
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 		}
 		p_slot->state = STATIC_STATE;
 	}
@@ -616,7 +616,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					switch (p_slot->state) {
 					case BLINKINGOFF_STATE:
 						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
+						mutex_lock(&ctrl->crit_sect);
 						
 						if (PWR_LED(ctrl->ctrlcap)) {
 							p_slot->hpc_ops->green_led_on(p_slot);
@@ -630,11 +630,11 @@ static void interrupt_event_handler(struct controller *ctrl)
 							wait_for_ctrl_irq (ctrl);
 						}
 						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
+						mutex_unlock(&ctrl->crit_sect);
 						break;
 					case BLINKINGON_STATE:
 						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
+						mutex_lock(&ctrl->crit_sect);
 
 						if (PWR_LED(ctrl->ctrlcap)) {
 							p_slot->hpc_ops->green_led_off(p_slot);
@@ -647,7 +647,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 							wait_for_ctrl_irq (ctrl);
 						}
 						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
+						mutex_unlock(&ctrl->crit_sect);
 
 						break;
 					default:
@@ -676,7 +676,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 						}
 
 						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
+						mutex_lock(&ctrl->crit_sect);
 
 						/* blink green LED and turn off amber */
 						if (PWR_LED(ctrl->ctrlcap)) {
@@ -693,7 +693,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 						}
 
 						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
+						mutex_unlock(&ctrl->crit_sect);
 
 						init_timer(&p_slot->task_event);
 						p_slot->task_event.expires = jiffies + 5 * HZ;   /* 5 second delay */
@@ -708,7 +708,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					if (POWER_CTRL(ctrl->ctrlcap)) {
 						dbg("power fault\n");
 						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
+						mutex_lock(&ctrl->crit_sect);
 
 						if (ATTN_LED(ctrl->ctrlcap)) {
 							p_slot->hpc_ops->set_attention_status(p_slot, 1);
@@ -721,7 +721,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 						}
 
 						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
+						mutex_unlock(&ctrl->crit_sect);
 					}
 				}
 				/***********SURPRISE REMOVAL********************/
@@ -756,19 +756,19 @@ int pciehp_enable_slot(struct slot *p_slot)
 	int rc;
 
 	/* Check to see if (latch closed, card present, power off) */
-	down(&p_slot->ctrl->crit_sect);
+	mutex_lock(&p_slot->ctrl->crit_sect);
 
 	rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
 	if (rc || !getstatus) {
 		info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
-		up(&p_slot->ctrl->crit_sect);
+		mutex_unlock(&p_slot->ctrl->crit_sect);
 		return 1;
 	}
 	if (MRL_SENS(p_slot->ctrl->ctrlcap)) {	
 		rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 		if (rc || getstatus) {
 			info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
@@ -777,11 +777,11 @@ int pciehp_enable_slot(struct slot *p_slot)
 		rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
 		if (rc || getstatus) {
 			info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
-	up(&p_slot->ctrl->crit_sect);
+	mutex_unlock(&p_slot->ctrl->crit_sect);
 
 	p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 
@@ -806,13 +806,13 @@ int pciehp_disable_slot(struct slot *p_slot)
 		return 1;
 
 	/* Check to see if (latch closed, card present, power on) */
-	down(&p_slot->ctrl->crit_sect);
+	mutex_lock(&p_slot->ctrl->crit_sect);
 
 	if (!HP_SUPR_RM(p_slot->ctrl->ctrlcap)) {	
 		ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
 		if (ret || !getstatus) {
 			info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
@@ -821,7 +821,7 @@ int pciehp_disable_slot(struct slot *p_slot)
 		ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 		if (ret || getstatus) {
 			info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
@@ -830,12 +830,12 @@ int pciehp_disable_slot(struct slot *p_slot)
 		ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
 		if (ret || !getstatus) {
 			info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
 
-	up(&p_slot->ctrl->crit_sect);
+	mutex_unlock(&p_slot->ctrl->crit_sect);
 
 	ret = remove_board(p_slot);
 	update_slot_info(p_slot);
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 77e530321de2..6c14d9e46b2e 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -38,7 +38,10 @@
 
 #include "../pci.h"
 #include "pciehp.h"
-
+#include <acpi/acpi.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/actypes.h>
+#include <linux/pci-acpi.h>
 #ifdef DEBUG
 #define DBG_K_TRACE_ENTRY      ((unsigned int)0x00000001)	/* On function entry */
 #define DBG_K_TRACE_EXIT       ((unsigned int)0x00000002)	/* On function exit */
@@ -1236,6 +1239,76 @@ static struct hpc_ops pciehp_hpc_ops = {
 	.check_lnk_status		= hpc_check_lnk_status,
 };
 
+#ifdef CONFIG_ACPI
+int pciehp_acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev)
+{
+	acpi_status status;
+	acpi_handle chandle, handle = DEVICE_ACPI_HANDLE(&(dev->dev));
+	struct pci_dev *pdev = dev;
+	struct pci_bus *parent;
+	struct acpi_buffer string = { ACPI_ALLOCATE_BUFFER, NULL };
+
+	/*
+	 * Per PCI firmware specification, we should run the ACPI _OSC
+	 * method to get control of hotplug hardware before using it.
+	 * If an _OSC is missing, we look for an OSHP to do the same thing.
+	 * To handle different BIOS behavior, we look for _OSC and OSHP
+	 * within the scope of the hotplug controller and its parents, upto
+	 * the host bridge under which this controller exists.
+	 */
+	while (!handle) {
+		/*
+		 * This hotplug controller was not listed in the ACPI name
+		 * space at all. Try to get acpi handle of parent pci bus.
+		 */
+		if (!pdev || !pdev->bus->parent)
+			break;
+		parent = pdev->bus->parent;
+		dbg("Could not find %s in acpi namespace, trying parent\n",
+				pci_name(pdev));
+		if (!parent->self)
+			/* Parent must be a host bridge */
+			handle = acpi_get_pci_rootbridge_handle(
+					pci_domain_nr(parent),
+					parent->number);
+		else
+			handle = DEVICE_ACPI_HANDLE(
+					&(parent->self->dev));
+		pdev = parent->self;
+	}
+
+	while (handle) {
+		acpi_get_name(handle, ACPI_FULL_PATHNAME, &string);
+		dbg("Trying to get hotplug control for %s \n",
+			(char *)string.pointer);
+		status = pci_osc_control_set(handle,
+				OSC_PCI_EXPRESS_NATIVE_HP_CONTROL);
+		if (status == AE_NOT_FOUND)
+			status = acpi_run_oshp(handle);
+		if (ACPI_SUCCESS(status)) {
+			dbg("Gained control for hotplug HW for pci %s (%s)\n",
+				pci_name(dev), (char *)string.pointer);
+			acpi_os_free(string.pointer);
+			return 0;
+		}
+		if (acpi_root_bridge(handle))
+			break;
+		chandle = handle;
+		status = acpi_get_parent(chandle, &handle);
+		if (ACPI_FAILURE(status))
+			break;
+	}
+
+	err("Cannot get control of hotplug hardware for pci %s\n",
+			pci_name(dev));
+
+	acpi_os_free(string.pointer);
+	return -1;
+}
+#endif
+
+
+
 int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 {
 	struct php_ctlr_state_s *php_ctlr, *p;
@@ -1334,7 +1407,7 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 	if (pci_enable_device(pdev))
 		goto abort_free_ctlr;
 	
-	init_MUTEX(&ctrl->crit_sect);
+	mutex_init(&ctrl->crit_sect);
 	/* setup wait queue */
 	init_waitqueue_head(&ctrl->queue);
 
diff --git a/drivers/pci/hotplug/pciehprm_acpi.c b/drivers/pci/hotplug/pciehprm_acpi.c
deleted file mode 100644
index 2bdb30f68bf8..000000000000
--- a/drivers/pci/hotplug/pciehprm_acpi.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * PCIEHPRM ACPI: PHP Resource Manager for ACPI platform
- *
- * Copyright (C) 2003-2004 Intel Corporation
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <kristen.c.accardi@intel.com>
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/acpi.h>
-#include <linux/pci-acpi.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/actypes.h>
-#include "pciehp.h"
-
-#define	METHOD_NAME__SUN	"_SUN"
-#define	METHOD_NAME__HPP	"_HPP"
-#define	METHOD_NAME_OSHP	"OSHP"
-
-static u8 * acpi_path_name( acpi_handle	handle)
-{
-	acpi_status		status;
-	static u8		path_name[ACPI_PATHNAME_MAX];
-	struct acpi_buffer	ret_buf = { ACPI_PATHNAME_MAX, path_name };
-
-	memset(path_name, 0, sizeof (path_name));
-	status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &ret_buf);
-
-	if (ACPI_FAILURE(status))
-		return NULL;
-	else
-		return path_name;	
-}
-
-static acpi_status
-acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
-{
-	acpi_status		status;
-	u8			nui[4];
-	struct acpi_buffer	ret_buf = { 0, NULL};
-	union acpi_object	*ext_obj, *package;
-	u8			*path_name = acpi_path_name(handle);
-	int			i, len = 0;
-
-	/* get _hpp */
-	status = acpi_evaluate_object(handle, METHOD_NAME__HPP, NULL, &ret_buf);
-	switch (status) {
-	case AE_BUFFER_OVERFLOW:
-		ret_buf.pointer = kmalloc (ret_buf.length, GFP_KERNEL);
-		if (!ret_buf.pointer) {
-			err ("%s:%s alloc for _HPP fail\n", __FUNCTION__,
-					path_name);
-			return AE_NO_MEMORY;
-		}
-		status = acpi_evaluate_object(handle, METHOD_NAME__HPP,
-				NULL, &ret_buf);
-		if (ACPI_SUCCESS(status))
-			break;
-	default:
-		if (ACPI_FAILURE(status)) {
-			dbg("%s:%s _HPP fail=0x%x\n", __FUNCTION__,
-					path_name, status);
-			return status;
-		}
-	}
-
-	ext_obj = (union acpi_object *) ret_buf.pointer;
-	if (ext_obj->type != ACPI_TYPE_PACKAGE) {
-		err ("%s:%s _HPP obj not a package\n", __FUNCTION__,
-				path_name);
-		status = AE_ERROR;
-		goto free_and_return;
-	}
-
-	len = ext_obj->package.count;
-	package = (union acpi_object *) ret_buf.pointer;
-	for ( i = 0; (i < len) || (i < 4); i++) {
-		ext_obj = (union acpi_object *) &package->package.elements[i];
-		switch (ext_obj->type) {
-		case ACPI_TYPE_INTEGER:
-			nui[i] = (u8)ext_obj->integer.value;
-			break;
-		default:
-			err ("%s:%s _HPP obj type incorrect\n", __FUNCTION__,
-					path_name);
-			status = AE_ERROR;
-			goto free_and_return;
-		}
-	}
-
-	hpp->cache_line_size = nui[0];
-	hpp->latency_timer = nui[1];
-	hpp->enable_serr = nui[2];
-	hpp->enable_perr = nui[3];
-
-	dbg("  _HPP: cache_line_size=0x%x\n", hpp->cache_line_size);
-	dbg("  _HPP: latency timer  =0x%x\n", hpp->latency_timer);
-	dbg("  _HPP: enable SERR    =0x%x\n", hpp->enable_serr);
-	dbg("  _HPP: enable PERR    =0x%x\n", hpp->enable_perr);
-
-free_and_return:
-	kfree(ret_buf.pointer);
-	return status;
-}
-
-static acpi_status acpi_run_oshp(acpi_handle handle)
-{
-	acpi_status		status;
-	u8			*path_name = acpi_path_name(handle);
-
-	/* run OSHP */
-	status = acpi_evaluate_object(handle, METHOD_NAME_OSHP, NULL, NULL);
-	if (ACPI_FAILURE(status)) {
-		dbg("%s:%s OSHP fails=0x%x\n", __FUNCTION__, path_name,
-				status);
-	} else {
-		dbg("%s:%s OSHP passes\n", __FUNCTION__, path_name);
-	}
-	return status;
-}
-
-static int is_root_bridge(acpi_handle handle)
-{
-	acpi_status status;
-	struct acpi_device_info *info;
-	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
-	int i;
-
-	status = acpi_get_object_info(handle, &buffer);
-	if (ACPI_SUCCESS(status)) {
-		info = buffer.pointer;
-		if ((info->valid & ACPI_VALID_HID) &&
-			!strcmp(PCI_ROOT_HID_STRING,
-					info->hardware_id.value)) {
-			acpi_os_free(buffer.pointer);
-			return 1;
-		}
-		if (info->valid & ACPI_VALID_CID) {
-			for (i=0; i < info->compatibility_id.count; i++) {
-				if (!strcmp(PCI_ROOT_HID_STRING,
-					info->compatibility_id.id[i].value)) {
-					acpi_os_free(buffer.pointer);
-					return 1;
-				}
-			}
-		}
-	}
-	return 0;
-}
-
-int pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev)
-{
-	acpi_status status;
-	acpi_handle chandle, handle = DEVICE_ACPI_HANDLE(&(dev->dev));
-	struct pci_dev *pdev = dev;
-	struct pci_bus *parent;
-	u8 *path_name;
-
-	/*
-	 * Per PCI firmware specification, we should run the ACPI _OSC
-	 * method to get control of hotplug hardware before using it.
-	 * If an _OSC is missing, we look for an OSHP to do the same thing.
-	 * To handle different BIOS behavior, we look for _OSC and OSHP
-	 * within the scope of the hotplug controller and its parents, upto
-	 * the host bridge under which this controller exists.
-	 */
-	while (!handle) {
-		/*
-		 * This hotplug controller was not listed in the ACPI name
-		 * space at all. Try to get acpi handle of parent pci bus.
-		 */
-		if (!pdev || !pdev->bus->parent)
-			break;
-		parent = pdev->bus->parent;
-		dbg("Could not find %s in acpi namespace, trying parent\n",
-				pci_name(pdev));
-		if (!parent->self)
-			/* Parent must be a host bridge */
-			handle = acpi_get_pci_rootbridge_handle(
-					pci_domain_nr(parent),
-					parent->number);
-		else
-			handle = DEVICE_ACPI_HANDLE(
-					&(parent->self->dev));
-		pdev = parent->self;
-	}
-
-	while (handle) {
-		path_name = acpi_path_name(handle);
-		dbg("Trying to get hotplug control for %s \n", path_name);
-		status = pci_osc_control_set(handle,
-				OSC_PCI_EXPRESS_NATIVE_HP_CONTROL);
-		if (status == AE_NOT_FOUND)
-			status = acpi_run_oshp(handle);
-		if (ACPI_SUCCESS(status)) {
-			dbg("Gained control for hotplug HW for pci %s (%s)\n",
-				pci_name(dev), path_name);
-			return 0;
-		}
-		if (is_root_bridge(handle))
-			break;
-		chandle = handle;
-		status = acpi_get_parent(chandle, &handle);
-		if (ACPI_FAILURE(status))
-			break;
-	}
-
-	err("Cannot get control of hotplug hardware for pci %s\n",
-			pci_name(dev));
-	return -1;
-}
-
-void pciehp_get_hp_params_from_firmware(struct pci_dev *dev,
-		struct hotplug_params *hpp)
-{
-	acpi_status status = AE_NOT_FOUND;
-	struct pci_dev *pdev = dev;
-
-	/*
-	 * _HPP settings apply to all child buses, until another _HPP is
-	 * encountered. If we don't find an _HPP for the input pci dev,
-	 * look for it in the parent device scope since that would apply to
-	 * this pci dev. If we don't find any _HPP, use hardcoded defaults
-	 */
-	while (pdev && (ACPI_FAILURE(status))) {
-		acpi_handle handle = DEVICE_ACPI_HANDLE(&(pdev->dev));
-		if (!handle)
-			break;
-		status = acpi_run_hpp(handle, hpp);
-		if (!(pdev->bus->parent))
-			break;
-		/* Check if a parent object supports _HPP */
-		pdev = pdev->bus->parent->self;
-	}
-}
-
diff --git a/drivers/pci/hotplug/pciehprm_nonacpi.c b/drivers/pci/hotplug/pciehprm_nonacpi.c
deleted file mode 100644
index 29180dfe8493..000000000000
--- a/drivers/pci/hotplug/pciehprm_nonacpi.c
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * PCIEHPRM NONACPI: PHP Resource Manager for Non-ACPI/Legacy platform
- *
- * Copyright (C) 1995,2001 Compaq Computer Corporation
- * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
- * Copyright (C) 2001 IBM Corp.
- * Copyright (C) 2003-2004 Intel Corporation
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include "pciehp.h"
-
-void pciehp_get_hp_params_from_firmware(struct pci_dev *dev,
-		struct hotplug_params *hpp)
-{
-	return;
-}
-
-int pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev)
-{
-	return 0;
-}
diff --git a/drivers/pci/hotplug/pcihp_skeleton.c b/drivers/pci/hotplug/pcihp_skeleton.c
index 3194d51c6ec9..0a46f549676a 100644
--- a/drivers/pci/hotplug/pcihp_skeleton.c
+++ b/drivers/pci/hotplug/pcihp_skeleton.c
@@ -37,10 +37,12 @@
 #include <linux/init.h>
 #include "pci_hotplug.h"
 
+#define SLOT_NAME_SIZE	10
 struct slot {
 	u8 number;
 	struct hotplug_slot *hotplug_slot;
 	struct list_head slot_list;
+	char name[SLOT_NAME_SIZE];
 };
 
 static LIST_HEAD(slot_list);
@@ -233,12 +235,10 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 	kfree(slot->hotplug_slot->info);
-	kfree(slot->hotplug_slot->name);
 	kfree(slot->hotplug_slot);
 	kfree(slot);
 }
 
-#define SLOT_NAME_SIZE	10
 static void make_slot_name(struct slot *slot)
 {
 	/*
@@ -257,7 +257,6 @@ static int __init init_slots(void)
 	struct slot *slot;
 	struct hotplug_slot *hotplug_slot;
 	struct hotplug_slot_info *info;
-	char *name;
 	int retval = -ENOMEM;
 	int i;
 
@@ -266,31 +265,23 @@ static int __init init_slots(void)
 	 * with the pci_hotplug subsystem.
 	 */
 	for (i = 0; i < num_slots; ++i) {
-		slot = kmalloc(sizeof(struct slot), GFP_KERNEL);
+		slot = kzalloc(sizeof(*slot), GFP_KERNEL);
 		if (!slot)
 			goto error;
-		memset(slot, 0, sizeof(struct slot));
 
-		hotplug_slot = kmalloc(sizeof(struct hotplug_slot),
-					GFP_KERNEL);
+		hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
 		if (!hotplug_slot)
 			goto error_slot;
-		memset(hotplug_slot, 0, sizeof (struct hotplug_slot));
 		slot->hotplug_slot = hotplug_slot;
 
-		info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
+		info = kzalloc(sizeof(*info), GFP_KERNEL);
 		if (!info)
 			goto error_hpslot;
-		memset(info, 0, sizeof (struct hotplug_slot_info));
 		hotplug_slot->info = info;
 
-		name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
-		if (!name)
-			goto error_info;
-		hotplug_slot->name = name;
-
 		slot->number = i;
 
+		hotplug_slot->name = slot->name;
 		hotplug_slot->private = slot;
 		hotplug_slot->release = &release_slot;
 		make_slot_name(slot);
@@ -300,16 +291,16 @@ static int __init init_slots(void)
 		 * Initialize the slot info structure with some known
 		 * good values.
 		 */
-		info->power_status = get_power_status(slot);
-		info->attention_status = get_attention_status(slot);
-		info->latch_status = get_latch_status(slot);
-		info->adapter_status = get_adapter_status(slot);
+		get_power_status(hotplug_slot, &info->power_status);
+		get_attention_status(hotplug_slot, &info->attention_status);
+		get_latch_status(hotplug_slot, &info->latch_status);
+		get_adapter_status(hotplug_slot, &info->adapter_status);
 		
 		dbg("registering slot %d\n", i);
 		retval = pci_hp_register(slot->hotplug_slot);
 		if (retval) {
 			err("pci_hp_register failed with error %d\n", retval);
-			goto error_name;
+			goto error_info;
 		}
 
 		/* add slot to our internal list */
@@ -317,8 +308,6 @@ static int __init init_slots(void)
 	}
 
 	return 0;
-error_name:
-	kfree(name);
 error_info:
 	kfree(info);
 error_hpslot:
diff --git a/drivers/pci/hotplug/rpaphp_slot.c b/drivers/pci/hotplug/rpaphp_slot.c
index 78943e064b59..b771196a654e 100644
--- a/drivers/pci/hotplug/rpaphp_slot.c
+++ b/drivers/pci/hotplug/rpaphp_slot.c
@@ -84,19 +84,16 @@ struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_
 {
 	struct slot *slot;
 	
-	slot = kmalloc(sizeof (struct slot), GFP_KERNEL);
+	slot = kzalloc(sizeof(struct slot), GFP_KERNEL);
 	if (!slot)
 		goto error_nomem;
-	memset(slot, 0, sizeof (struct slot));
-	slot->hotplug_slot = kmalloc(sizeof (struct hotplug_slot), GFP_KERNEL);
+	slot->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
 	if (!slot->hotplug_slot)
 		goto error_slot;	
-	memset(slot->hotplug_slot, 0, sizeof (struct hotplug_slot));
-	slot->hotplug_slot->info = kmalloc(sizeof (struct hotplug_slot_info),
+	slot->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
 					   GFP_KERNEL);
 	if (!slot->hotplug_slot->info)
 		goto error_hpslot;
-	memset(slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info));
 	slot->hotplug_slot->name = kmalloc(BUS_ID_SIZE + 1, GFP_KERNEL);
 	if (!slot->hotplug_slot->name)
 		goto error_info;	
diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index a32ae82e5922..c402da8e78ae 100644
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2005 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2005-2006 Silicon Graphics, Inc. All rights reserved.
  *
  * This work was based on the 2.4/2.6 kernel development by Dick Reigner.
  * Work to add BIOS PROM support was completed by Mike Habeck.
@@ -230,6 +230,13 @@ static void sn_bus_free_data(struct pci_dev *dev)
 		list_for_each_entry(child, &subordinate_bus->devices, bus_list)
 			sn_bus_free_data(child);
 	}
+	/*
+	 * Some drivers may use dma accesses during the
+	 * driver remove function. We release the sysdata
+	 * areas after the driver remove functions have
+	 * been called.
+	 */
+	sn_bus_store_sysdata(dev);
 	sn_pci_unfixup_slot(dev);
 }
 
@@ -429,13 +436,6 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
 				   PCI_DEVFN(slot->device_num + 1,
 				   	     PCI_FUNC(func)));
 		if (dev) {
-			/*
-			 * Some drivers may use dma accesses during the
-			 * driver remove function. We release the sysdata
-			 * areas after the driver remove functions have
-			 * been called.
-			 */
-			sn_bus_store_sysdata(dev);
 			sn_bus_free_data(dev);
 			pci_remove_bus_device(dev);
 			pci_dev_put(dev);
diff --git a/drivers/pci/hotplug/shpchp.h b/drivers/pci/hotplug/shpchp.h
index 7d6f521d02ea..5c70f43908c4 100644
--- a/drivers/pci/hotplug/shpchp.h
+++ b/drivers/pci/hotplug/shpchp.h
@@ -33,6 +33,7 @@
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/sched.h>	/* signal_pending(), struct timer_list */
+#include <linux/mutex.h>
 
 #include "pci_hotplug.h"
 
@@ -45,6 +46,7 @@
 extern int shpchp_poll_mode;
 extern int shpchp_poll_time;
 extern int shpchp_debug;
+extern struct workqueue_struct *shpchp_wq;
 
 /*#define dbg(format, arg...) do { if (shpchp_debug) printk(KERN_DEBUG "%s: " format, MY_NAME , ## arg); } while (0)*/
 #define dbg(format, arg...) do { if (shpchp_debug) printk("%s: " format, MY_NAME , ## arg); } while (0)
@@ -52,10 +54,8 @@ extern int shpchp_debug;
 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
 
-#define SLOT_MAGIC	0x67267321
+#define SLOT_NAME_SIZE 10
 struct slot {
-	u32 magic;
-	struct slot *next;
 	u8 bus;
 	u8 device;
 	u16 status;
@@ -70,26 +70,27 @@ struct slot {
 	struct hpc_ops *hpc_ops;
 	struct hotplug_slot *hotplug_slot;
 	struct list_head	slot_list;
+	char name[SLOT_NAME_SIZE];
+	struct work_struct work;	/* work for button event */
+	struct mutex lock;
 };
 
 struct event_info {
 	u32 event_type;
-	u8 hp_slot;
+	struct slot *p_slot;
+	struct work_struct work;
 };
 
 struct controller {
-	struct controller *next;
-	struct semaphore crit_sect;	/* critical section semaphore */
+	struct mutex crit_sect;		/* critical section mutex */
+	struct mutex cmd_lock;		/* command lock */
 	struct php_ctlr_state_s *hpc_ctlr_handle; /* HPC controller handle */
 	int num_slots;			/* Number of slots on ctlr */
 	int slot_num_inc;		/* 1 or -1 */
 	struct pci_dev *pci_dev;
-	struct pci_bus *pci_bus;
-	struct event_info event_queue[10];
-	struct slot *slot;
+	struct list_head slot_list;
 	struct hpc_ops *hpc_ops;
 	wait_queue_head_t queue;	/* sleep & wake process */
-	u8 next_event;
 	u8 bus;
 	u8 device;
 	u8 function;
@@ -105,12 +106,6 @@ struct controller {
 	volatile int cmd_busy;
 };
 
-struct hotplug_params {
-	u8	cache_line_size;
-	u8	latency_timer;
-	u8	enable_serr;
-	u8	enable_perr;
-};
 
 /* Define AMD SHPC ID  */
 #define PCI_DEVICE_ID_AMD_GOLAM_7450	0x7450 
@@ -180,11 +175,8 @@ struct hotplug_params {
 /* sysfs functions for the hotplug controller info */
 extern void shpchp_create_ctrl_files	(struct controller *ctrl);
 
-/* controller functions */
-extern int	shpchp_event_start_thread(void);
-extern void	shpchp_event_stop_thread(void);
-extern int	shpchp_enable_slot(struct slot *slot);
-extern int	shpchp_disable_slot(struct slot *slot);
+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, void *inst_id);
 extern u8	shpchp_handle_switch_change(u8 hp_slot, void *inst_id);
@@ -195,16 +187,28 @@ extern u8	shpchp_handle_power_fault(u8 hp_slot, void *inst_id);
 extern int	shpchp_save_config(struct controller *ctrl, int busnumber, int num_ctlr_slots, int first_device_num);
 extern int	shpchp_configure_device(struct slot *p_slot);
 extern int	shpchp_unconfigure_device(struct slot *p_slot);
-extern void	get_hp_hw_control_from_firmware(struct pci_dev *dev);
-extern void	get_hp_params_from_firmware(struct pci_dev *dev,
-		struct hotplug_params *hpp);
-extern int	shpchprm_get_physical_slot_number(struct controller *ctrl,
-		u32 *sun, u8 busnum, u8 devnum);
 extern void	shpchp_remove_ctrl_files(struct controller *ctrl);
+extern void	cleanup_slots(struct controller *ctrl);
+extern void	queue_pushbutton_work(void *data);
 
 
-/* Global variables */
-extern struct controller *shpchp_ctrl_list;
+#ifdef CONFIG_ACPI
+static inline int get_hp_params_from_firmware(struct pci_dev *dev,
+			struct hotplug_params *hpp)
+{
+	if (ACPI_FAILURE(acpi_get_hp_params_from_firmware(dev, hpp)))
+			return -ENODEV;
+	return 0;
+}
+#define get_hp_hw_control_from_firmware(pdev) \
+	do { \
+		if (DEVICE_ACPI_HANDLE(&(pdev->dev))) \
+			acpi_run_oshp(DEVICE_ACPI_HANDLE(&(pdev->dev))); \
+	} while (0)
+#else
+#define get_hp_params_from_firmware(dev, hpp) (-ENODEV)
+#define get_hp_hw_control_from_firmware(dev) do { } while (0)
+#endif
 
 struct ctrl_reg {
 	volatile u32 base_offset;
@@ -286,10 +290,6 @@ static inline int slot_paranoia_check (struct slot *slot, const char *function)
 		dbg("%s - slot == NULL", function);
 		return -1;
 	}
-	if (slot->magic != SLOT_MAGIC) {
-		dbg("%s - bad magic number for slot", function);
-		return -1;
-	}
 	if (!slot->hotplug_slot) {
 		dbg("%s - slot->hotplug_slot == NULL!", function);
 		return -1;
@@ -314,44 +314,19 @@ static inline struct slot *get_slot (struct hotplug_slot *hotplug_slot, const ch
 
 static inline struct slot *shpchp_find_slot (struct controller *ctrl, u8 device)
 {
-	struct slot *p_slot, *tmp_slot = NULL;
+	struct slot *slot;
 
 	if (!ctrl)
 		return NULL;
 
-	p_slot = ctrl->slot;
-
-	while (p_slot && (p_slot->device != device)) {
-		tmp_slot = p_slot;
-		p_slot = p_slot->next;
+	list_for_each_entry(slot, &ctrl->slot_list, slot_list) {
+		if (slot->device == device)
+			return slot;
 	}
-	if (p_slot == NULL) {
-		err("ERROR: shpchp_find_slot device=0x%x\n", device);
-		p_slot = tmp_slot;
-	}
-
-	return (p_slot);
-}
-
-static inline int wait_for_ctrl_irq (struct controller *ctrl)
-{
-    DECLARE_WAITQUEUE(wait, current);
-	int retval = 0;
-
-	add_wait_queue(&ctrl->queue, &wait);
 
-	if (!shpchp_poll_mode) {
-		/* Sleep for up to 1 second */
-		msleep_interruptible(1000);
-	} else {
-		/* Sleep for up to 2 seconds */
-		msleep_interruptible(2000);
-	}
-	remove_wait_queue(&ctrl->queue, &wait);
-	if (signal_pending(current))
-		retval =  -EINTR;
+	err("%s: slot (device=0x%x) not found\n", __FUNCTION__, device);
 
-	return retval;
+	return NULL;
 }
 
 static inline void amd_pogo_errata_save_misc_reg(struct slot *p_slot)
@@ -427,13 +402,6 @@ static inline void amd_pogo_errata_restore_misc_reg(struct slot *p_slot)
 	pci_write_config_dword(p_slot->ctrl->pci_dev, PCIX_MISCII_OFFSET, pcix_misc2_temp);
 }
 
-#define SLOT_NAME_SIZE 10
-
-static inline void make_slot_name(char *buffer, int buffer_size, struct slot *slot)
-{
-	snprintf(buffer, buffer_size, "%04d_%04d", slot->bus, slot->number);
-}
-
 enum php_ctlr_type {
 	PCI,
 	ISA,
diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c
index a2b3f0010cec..3be4d492ccc2 100644
--- a/drivers/pci/hotplug/shpchp_core.c
+++ b/drivers/pci/hotplug/shpchp_core.c
@@ -32,13 +32,14 @@
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/pci.h>
+#include <linux/workqueue.h>
 #include "shpchp.h"
 
 /* Global variables */
 int shpchp_debug;
 int shpchp_poll_mode;
 int shpchp_poll_time;
-struct controller *shpchp_ctrl_list;	/* = NULL */
+struct workqueue_struct *shpchp_wq;
 
 #define DRIVER_VERSION	"0.4"
 #define DRIVER_AUTHOR	"Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
@@ -57,7 +58,6 @@ MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds");
 
 #define SHPC_MODULE_NAME "shpchp"
 
-static int shpc_start_thread (void);
 static int set_attention_status (struct hotplug_slot *slot, u8 value);
 static int enable_slot		(struct hotplug_slot *slot);
 static int disable_slot		(struct hotplug_slot *slot);
@@ -94,107 +94,120 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 
 	kfree(slot->hotplug_slot->info);
-	kfree(slot->hotplug_slot->name);
 	kfree(slot->hotplug_slot);
 	kfree(slot);
 }
 
+static void make_slot_name(struct slot *slot)
+{
+	snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
+		 slot->bus, slot->number);
+}
+
+
+
+
+static int
+shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun,
+				u8 busnum, u8 devnum)
+{
+	int offset = devnum - ctrl->slot_device_offset;
+
+	dbg("%s: ctrl->slot_num_inc %d, offset %d\n", __FUNCTION__,
+			ctrl->slot_num_inc, offset);
+	*sun = (u8) (ctrl->first_slot + ctrl->slot_num_inc *offset);
+	return 0;
+}
+
+
+
 static int init_slots(struct controller *ctrl)
 {
-	struct slot *new_slot;
-	u8 number_of_slots;
-	u8 slot_device;
-	u32 slot_number, sun;
-	int result = -ENOMEM;
-
-	number_of_slots = ctrl->num_slots;
-	slot_device = ctrl->slot_device_offset;
-	slot_number = ctrl->first_slot;
-
-	while (number_of_slots) {
-		new_slot = (struct slot *) kmalloc(sizeof(struct slot), GFP_KERNEL);
-		if (!new_slot)
+	struct slot *slot;
+	struct hotplug_slot *hotplug_slot;
+	struct hotplug_slot_info *info;
+	int retval = -ENOMEM;
+	int i;
+	u32 sun;
+
+	for (i = 0; i < ctrl->num_slots; i++) {
+		slot = kzalloc(sizeof(*slot), GFP_KERNEL);
+		if (!slot)
 			goto error;
 
-		memset(new_slot, 0, sizeof(struct slot));
-		new_slot->hotplug_slot = kmalloc (sizeof (struct hotplug_slot), GFP_KERNEL);
-		if (!new_slot->hotplug_slot)
+		hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
+		if (!hotplug_slot)
 			goto error_slot;
-		memset(new_slot->hotplug_slot, 0, sizeof (struct hotplug_slot));
+		slot->hotplug_slot = hotplug_slot;
 
-		new_slot->hotplug_slot->info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
-		if (!new_slot->hotplug_slot->info)
+		info = kzalloc(sizeof(*info), GFP_KERNEL);
+		if (!info)
 			goto error_hpslot;
-		memset(new_slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info));
-		new_slot->hotplug_slot->name = kmalloc (SLOT_NAME_SIZE, GFP_KERNEL);
-		if (!new_slot->hotplug_slot->name)
-			goto error_info;
+		hotplug_slot->info = info;
+
+		hotplug_slot->name = slot->name;
 
-		new_slot->magic = SLOT_MAGIC;
-		new_slot->ctrl = ctrl;
-		new_slot->bus = ctrl->slot_bus;
-		new_slot->device = slot_device;
-		new_slot->hpc_ops = ctrl->hpc_ops;
+		slot->hp_slot = i;
+		slot->ctrl = ctrl;
+		slot->bus = ctrl->slot_bus;
+		slot->device = ctrl->slot_device_offset + i;
+		slot->hpc_ops = ctrl->hpc_ops;
+		mutex_init(&slot->lock);
 
 		if (shpchprm_get_physical_slot_number(ctrl, &sun,
-					new_slot->bus, new_slot->device))
-			goto error_name;
+						      slot->bus, slot->device))
+			goto error_info;
 
-		new_slot->number = sun;
-		new_slot->hp_slot = slot_device - ctrl->slot_device_offset;
+		slot->number = sun;
+		INIT_WORK(&slot->work, queue_pushbutton_work, slot);
 
 		/* register this slot with the hotplug pci core */
-		new_slot->hotplug_slot->private = new_slot;
-		new_slot->hotplug_slot->release = &release_slot;
-		make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
-		new_slot->hotplug_slot->ops = &shpchp_hotplug_slot_ops;
-
-		new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status));
-		new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status));
-		new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status));
-		new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status));
-
-		dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n", new_slot->bus, 
-			new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset);
-		result = pci_hp_register (new_slot->hotplug_slot);
-		if (result) {
-			err ("pci_hp_register failed with error %d\n", result);
-			goto error_name;
+		hotplug_slot->private = slot;
+		hotplug_slot->release = &release_slot;
+		make_slot_name(slot);
+		hotplug_slot->ops = &shpchp_hotplug_slot_ops;
+
+		get_power_status(hotplug_slot, &info->power_status);
+		get_attention_status(hotplug_slot, &info->attention_status);
+		get_latch_status(hotplug_slot, &info->latch_status);
+		get_adapter_status(hotplug_slot, &info->adapter_status);
+
+		dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x "
+		    "slot_device_offset=%x\n", slot->bus, slot->device,
+		    slot->hp_slot, slot->number, ctrl->slot_device_offset);
+		retval = pci_hp_register(slot->hotplug_slot);
+		if (retval) {
+			err("pci_hp_register failed with error %d\n", retval);
+			goto error_info;
 		}
 
-		new_slot->next = ctrl->slot;
-		ctrl->slot = new_slot;
-
-		number_of_slots--;
-		slot_device++;
-		slot_number += ctrl->slot_num_inc;
+		list_add(&slot->slot_list, &ctrl->slot_list);
 	}
 
 	return 0;
-
-error_name:
-	kfree(new_slot->hotplug_slot->name);
 error_info:
-	kfree(new_slot->hotplug_slot->info);
+	kfree(info);
 error_hpslot:
-	kfree(new_slot->hotplug_slot);
+	kfree(hotplug_slot);
 error_slot:
-	kfree(new_slot);
+	kfree(slot);
 error:
-	return result;
+	return retval;
 }
 
-static void cleanup_slots(struct controller *ctrl)
+void cleanup_slots(struct controller *ctrl)
 {
-	struct slot *old_slot, *next_slot;
-
-	old_slot = ctrl->slot;
-	ctrl->slot = NULL;
-
-	while (old_slot) {
-		next_slot = old_slot->next;
-		pci_hp_deregister(old_slot->hotplug_slot);
-		old_slot = next_slot;
+	struct list_head *tmp;
+	struct list_head *next;
+	struct slot *slot;
+
+	list_for_each_safe(tmp, next, &ctrl->slot_list) {
+		slot = list_entry(tmp, struct slot, slot_list);
+		list_del(&slot->slot_list);
+		cancel_delayed_work(&slot->work);
+		flush_scheduled_work();
+		flush_workqueue(shpchp_wq);
+		pci_hp_deregister(slot->hotplug_slot);
 	}
 }
 
@@ -207,9 +220,12 @@ static int get_ctlr_slot_config(struct controller *ctrl)
 	int rc;
 	int flags;
 
-	rc = shpc_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &updown, &flags);
+	rc = shpc_get_ctlr_slot_config(ctrl, &num_ctlr_slots,
+				       &first_device_num, &physical_slot_num,
+				       &updown, &flags);
 	if (rc) {
-		err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device);
+		err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n",
+		    __FUNCTION__, ctrl->bus, ctrl->device);
 		return -1;
 	}
 
@@ -218,19 +234,19 @@ static int get_ctlr_slot_config(struct controller *ctrl)
 	ctrl->first_slot = physical_slot_num;
 	ctrl->slot_num_inc = updown;		/* either -1 or 1 */
 
-	dbg("%s: num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d (%x:%x)\n",
-		__FUNCTION__, num_ctlr_slots, first_device_num, physical_slot_num, updown, ctrl->bus, ctrl->device);
+	dbg("%s: num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d "
+	    "(%x:%x)\n", __FUNCTION__, num_ctlr_slots, first_device_num,
+	    physical_slot_num, updown, ctrl->bus, ctrl->device);
 
 	return 0;
 }
 
-
 /*
  * set_attention_status - Turns the Amber LED for a slot on, off or blink
  */
 static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 
@@ -240,29 +256,27 @@ static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
 	return 0;
 }
 
-
 static int enable_slot (struct hotplug_slot *hotplug_slot)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 
-	return shpchp_enable_slot(slot);
+	return shpchp_sysfs_enable_slot(slot);
 }
 
-
 static int disable_slot (struct hotplug_slot *hotplug_slot)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 
-	return shpchp_disable_slot(slot);
+	return shpchp_sysfs_disable_slot(slot);
 }
 
 static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 	int retval;
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
@@ -276,7 +290,7 @@ static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
 
 static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 	int retval;
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
@@ -290,7 +304,7 @@ static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
 
 static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 	int retval;
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
@@ -304,7 +318,7 @@ static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
 
 static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 	int retval;
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
@@ -318,7 +332,7 @@ static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
 
 static int get_address (struct hotplug_slot *hotplug_slot, u32 *value)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 	struct pci_bus *bus = slot->ctrl->pci_dev->subordinate;
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
@@ -330,11 +344,11 @@ static int get_address (struct hotplug_slot *hotplug_slot, u32 *value)
 
 static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 	int retval;
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
-	
+
 	retval = slot->hpc_ops->get_max_bus_speed(slot, value);
 	if (retval < 0)
 		*value = PCI_SPEED_UNKNOWN;
@@ -344,11 +358,11 @@ static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_sp
 
 static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
 {
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct slot *slot = get_slot(hotplug_slot, __FUNCTION__);
 	int retval;
 
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
-	
+
 	retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
 	if (retval < 0)
 		*value = PCI_SPEED_UNKNOWN;
@@ -372,61 +386,54 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	int rc;
 	struct controller *ctrl;
 	struct slot *t_slot;
-	int first_device_num;	/* first PCI device number supported by this SHPC */
-	int num_ctlr_slots;	/* number of slots supported by this SHPC */
+	int first_device_num;	/* first PCI device number */
+	int num_ctlr_slots;	/* number of slots implemented */
 
 	if (!is_shpc_capable(pdev))
 		return -ENODEV;
 
-	ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL);
+	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
 	if (!ctrl) {
 		err("%s : out of memory\n", __FUNCTION__);
 		goto err_out_none;
 	}
-	memset(ctrl, 0, sizeof(struct controller));
+	INIT_LIST_HEAD(&ctrl->slot_list);
 
 	rc = shpc_init(ctrl, pdev);
 	if (rc) {
-		dbg("%s: controller initialization failed\n", SHPC_MODULE_NAME);
+		dbg("%s: controller initialization failed\n",
+		    SHPC_MODULE_NAME);
 		goto err_out_free_ctrl;
 	}
 
 	pci_set_drvdata(pdev, ctrl);
 
-	ctrl->pci_bus = kmalloc (sizeof (*ctrl->pci_bus), GFP_KERNEL);
-	if (!ctrl->pci_bus) {
-		err("out of memory\n");
-		rc = -ENOMEM;
-		goto err_out_unmap_mmio_region;
-	}
-	
-	memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus));
 	ctrl->bus = pdev->bus->number;
 	ctrl->slot_bus = pdev->subordinate->number;
-
 	ctrl->device = PCI_SLOT(pdev->devfn);
 	ctrl->function = PCI_FUNC(pdev->devfn);
-	dbg("ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", ctrl->bus, ctrl->device, ctrl->function, pdev->irq);
+
+	dbg("ctrl bus=0x%x, device=%x, function=%x, irq=%x\n",
+	    ctrl->bus, ctrl->device, ctrl->function, pdev->irq);
 
 	/*
-	 *	Save configuration headers for this and subordinate PCI buses
+	 * Save configuration headers for this and subordinate PCI buses
 	 */
-
 	rc = get_ctlr_slot_config(ctrl);
 	if (rc) {
 		err(msg_initialization_err, rc);
-		goto err_out_free_ctrl_bus;
+		goto err_out_release_ctlr;
 	}
 	first_device_num = ctrl->slot_device_offset;
 	num_ctlr_slots = ctrl->num_slots;
 
 	ctrl->add_support = 1;
-	
+
 	/* Setup the slot information structures */
 	rc = init_slots(ctrl);
 	if (rc) {
 		err(msg_initialization_err, 6);
-		goto err_out_free_ctrl_slot;
+		goto err_out_release_ctlr;
 	}
 
 	/* Now hpc_functions (slot->hpc_ops->functions) are ready  */
@@ -437,30 +444,16 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	dbg("%s: t_slot->hp_slot %x\n", __FUNCTION__,t_slot->hp_slot);
 
 	if (rc || ctrl->speed == PCI_SPEED_UNKNOWN) {
-		err(SHPC_MODULE_NAME ": Can't get current bus speed. Set to 33MHz PCI.\n");
+		err(SHPC_MODULE_NAME ": Can't get current bus speed. "
+		    "Set to 33MHz PCI.\n");
 		ctrl->speed = PCI_SPEED_33MHz;
 	}
 
-	/* Finish setting up the hot plug ctrl device */
-	ctrl->next_event = 0;
-
-	if (!shpchp_ctrl_list) {
-		shpchp_ctrl_list = ctrl;
-		ctrl->next = NULL;
-	} else {
-		ctrl->next = shpchp_ctrl_list;
-		shpchp_ctrl_list = ctrl;
-	}
-
 	shpchp_create_ctrl_files(ctrl);
 
 	return 0;
 
-err_out_free_ctrl_slot:
-	cleanup_slots(ctrl);
-err_out_free_ctrl_bus:
-	kfree(ctrl->pci_bus);
-err_out_unmap_mmio_region:
+err_out_release_ctlr:
 	ctrl->hpc_ops->release_ctlr(ctrl);
 err_out_free_ctrl:
 	kfree(ctrl);
@@ -468,74 +461,28 @@ err_out_none:
 	return -ENODEV;
 }
 
-
-static int shpc_start_thread(void)
-{
-	int retval = 0;
-	
-	dbg("Initialize + Start the notification/polling mechanism \n");
-
-	retval = shpchp_event_start_thread();
-	if (retval) {
-		dbg("shpchp_event_start_thread() failed\n");
-		return retval;
-	}
-
-	return retval;
-}
-
-static void __exit unload_shpchpd(void)
+static void shpc_remove(struct pci_dev *dev)
 {
-	struct controller *ctrl;
-	struct controller *tctrl;
-
-	ctrl = shpchp_ctrl_list;
-
-	while (ctrl) {
-		shpchp_remove_ctrl_files(ctrl);
-		cleanup_slots(ctrl);
-
-		kfree (ctrl->pci_bus);
-		ctrl->hpc_ops->release_ctlr(ctrl);
-
-		tctrl = ctrl;
-		ctrl = ctrl->next;
-
-		kfree(tctrl);
-	}
-
-	/* Stop the notification mechanism */
-	shpchp_event_stop_thread();
+	struct controller *ctrl = pci_get_drvdata(dev);
 
+	shpchp_remove_ctrl_files(ctrl);
+	ctrl->hpc_ops->release_ctlr(ctrl);
+	kfree(ctrl);
 }
 
-
 static struct pci_device_id shpcd_pci_tbl[] = {
-	{
-	.class =        ((PCI_CLASS_BRIDGE_PCI << 8) | 0x00),
-	.class_mask =	~0,
-	.vendor =       PCI_ANY_ID,
-	.device =       PCI_ANY_ID,
-	.subvendor =    PCI_ANY_ID,
-	.subdevice =    PCI_ANY_ID,
-	},
-	
+	{PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0)},
 	{ /* end: all zeroes */ }
 };
-
 MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl);
 
-
-
 static struct pci_driver shpc_driver = {
 	.name =		SHPC_MODULE_NAME,
 	.id_table =	shpcd_pci_tbl,
 	.probe =	shpc_probe,
-	/* remove:	shpc_remove_one, */
+	.remove =	shpc_remove,
 };
 
-
-
 static int __init shpcd_init(void)
 {
 	int retval = 0;
@@ -544,17 +491,15 @@ static int __init shpcd_init(void)
 	shpchp_poll_mode = 1;
 #endif
 
-	retval = shpc_start_thread();
-	if (retval)
-		goto error_hpc_init;
+	shpchp_wq = create_singlethread_workqueue("shpchpd");
+	if (!shpchp_wq)
+		return -ENOMEM;
 
 	retval = pci_register_driver(&shpc_driver);
 	dbg("%s: pci_register_driver = %d\n", __FUNCTION__, retval);
 	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
-
-error_hpc_init:
 	if (retval) {
-		shpchp_event_stop_thread();
+		destroy_workqueue(shpchp_wq);
 	}
 	return retval;
 }
@@ -562,10 +507,8 @@ error_hpc_init:
 static void __exit shpcd_cleanup(void)
 {
 	dbg("unload_shpchpd()\n");
-	unload_shpchpd();
-
 	pci_unregister_driver(&shpc_driver);
-
+	destroy_workqueue(shpchp_wq);
 	info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
 }
 
diff --git a/drivers/pci/hotplug/shpchp_ctrl.c b/drivers/pci/hotplug/shpchp_ctrl.c
index 643252d9bf3b..4e6381481c55 100644
--- a/drivers/pci/hotplug/shpchp_ctrl.c
+++ b/drivers/pci/hotplug/shpchp_ctrl.c
@@ -32,65 +32,50 @@
 #include <linux/types.h>
 #include <linux/smp_lock.h>
 #include <linux/pci.h>
+#include <linux/workqueue.h>
 #include "../pci.h"
 #include "shpchp.h"
 
-static void interrupt_event_handler(struct controller *ctrl);
+static void interrupt_event_handler(void *data);
+static int shpchp_enable_slot(struct slot *p_slot);
+static int shpchp_disable_slot(struct slot *p_slot);
 
-static struct semaphore event_semaphore;	/* mutex for process loop (up if something to process) */
-static struct semaphore event_exit;		/* guard ensure thread has exited before calling it quits */
-static int event_finished;
-static unsigned long pushbutton_pending;	/* = 0 */
+static int queue_interrupt_event(struct slot *p_slot, u32 event_type)
+{
+	struct event_info *info;
+
+	info = kmalloc(sizeof(*info), GFP_ATOMIC);
+	if (!info)
+		return -ENOMEM;
+
+	info->event_type = event_type;
+	info->p_slot = p_slot;
+	INIT_WORK(&info->work, interrupt_event_handler, info);
+
+	schedule_work(&info->work);
+
+	return 0;
+}
 
 u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id)
 {
 	struct controller *ctrl = (struct controller *) inst_id;
 	struct slot *p_slot;
-	u8 rc = 0;
-	u8 getstatus;
-	struct event_info *taskInfo;
+	u32 event_type;
 
 	/* Attention Button Change */
 	dbg("shpchp:  Attention button interrupt received.\n");
 	
-	/* This is the structure that tells the worker thread what to do */
-	taskInfo = &(ctrl->event_queue[ctrl->next_event]);
 	p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
-
 	p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
-	p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
-	
-	ctrl->next_event = (ctrl->next_event + 1) % 10;
-	taskInfo->hp_slot = hp_slot;
-
-	rc++;
 
 	/*
 	 *  Button pressed - See if need to TAKE ACTION!!!
 	 */
 	info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot);
-	taskInfo->event_type = INT_BUTTON_PRESS;
-
-	if ((p_slot->state == BLINKINGON_STATE)
-	    || (p_slot->state == BLINKINGOFF_STATE)) {
-		/* Cancel if we are still blinking; this means that we press the
-		 * attention again before the 5 sec. limit expires to cancel hot-add
-		 * or hot-remove
-		 */
-		taskInfo->event_type = INT_BUTTON_CANCEL;
-		info("Button cancel on Slot(%d)\n", ctrl->first_slot + hp_slot);
-	} else if ((p_slot->state == POWERON_STATE)
-		   || (p_slot->state == POWEROFF_STATE)) {
-		/* Ignore if the slot is on power-on or power-off state; this 
-		 * means that the previous attention button action to hot-add or
-		 * hot-remove is undergoing
-		 */
-		taskInfo->event_type = INT_BUTTON_IGNORE;
-		info("Button ignore on Slot(%d)\n", ctrl->first_slot + hp_slot);
-	}
+	event_type = INT_BUTTON_PRESS;
 
-	if (rc)
-		up(&event_semaphore);	/* signal event thread that new event is posted */
+	queue_interrupt_event(p_slot, event_type);
 
 	return 0;
 
@@ -100,21 +85,12 @@ u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id)
 {
 	struct controller *ctrl = (struct controller *) inst_id;
 	struct slot *p_slot;
-	u8 rc = 0;
 	u8 getstatus;
-	struct event_info *taskInfo;
+	u32 event_type;
 
 	/* Switch Change */
 	dbg("shpchp:  Switch interrupt received.\n");
 
-	/* This is the structure that tells the worker thread
-	 * what to do
-	 */
-	taskInfo = &(ctrl->event_queue[ctrl->next_event]);
-	ctrl->next_event = (ctrl->next_event + 1) % 10;
-	taskInfo->hp_slot = hp_slot;
-
-	rc++;
 	p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 	p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
 	p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
@@ -126,9 +102,9 @@ u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id)
 		 * Switch opened
 		 */
 		info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot);
-		taskInfo->event_type = INT_SWITCH_OPEN;
+		event_type = INT_SWITCH_OPEN;
 		if (p_slot->pwr_save && p_slot->presence_save) {
-			taskInfo->event_type = INT_POWER_FAULT;
+			event_type = INT_POWER_FAULT;
 			err("Surprise Removal of card\n");
 		}
 	} else {
@@ -136,34 +112,23 @@ u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id)
 		 *  Switch closed
 		 */
 		info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot);
-		taskInfo->event_type = INT_SWITCH_CLOSE;
+		event_type = INT_SWITCH_CLOSE;
 	}
 
-	if (rc)
-		up(&event_semaphore);	/* signal event thread that new event is posted */
+	queue_interrupt_event(p_slot, event_type);
 
-	return rc;
+	return 1;
 }
 
 u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id)
 {
 	struct controller *ctrl = (struct controller *) inst_id;
 	struct slot *p_slot;
-	u8 rc = 0;
-	/*u8 temp_byte;*/
-	struct event_info *taskInfo;
+	u32 event_type;
 
 	/* Presence Change */
 	dbg("shpchp:  Presence/Notify input change.\n");
 
-	/* This is the structure that tells the worker thread
-	 * what to do
-	 */
-	taskInfo = &(ctrl->event_queue[ctrl->next_event]);
-	ctrl->next_event = (ctrl->next_event + 1) % 10;
-	taskInfo->hp_slot = hp_slot;
-
-	rc++;
 	p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 
 	/* 
@@ -175,39 +140,29 @@ u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id)
 		 * Card Present
 		 */
 		info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot);
-		taskInfo->event_type = INT_PRESENCE_ON;
+		event_type = INT_PRESENCE_ON;
 	} else {
 		/*
 		 * Not Present
 		 */
 		info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot);
-		taskInfo->event_type = INT_PRESENCE_OFF;
+		event_type = INT_PRESENCE_OFF;
 	}
 
-	if (rc)
-		up(&event_semaphore);	/* signal event thread that new event is posted */
+	queue_interrupt_event(p_slot, event_type);
 
-	return rc;
+	return 1;
 }
 
 u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id)
 {
 	struct controller *ctrl = (struct controller *) inst_id;
 	struct slot *p_slot;
-	u8 rc = 0;
-	struct event_info *taskInfo;
+	u32 event_type;
 
 	/* Power fault */
 	dbg("shpchp:  Power fault interrupt received.\n");
 
-	/* This is the structure that tells the worker thread
-	 * what to do
-	 */
-	taskInfo = &(ctrl->event_queue[ctrl->next_event]);
-	ctrl->next_event = (ctrl->next_event + 1) % 10;
-	taskInfo->hp_slot = hp_slot;
-
-	rc++;
 	p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 
 	if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) {
@@ -216,21 +171,21 @@ u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id)
 		 */
 		info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot);
 		p_slot->status = 0x00;
-		taskInfo->event_type = INT_POWER_FAULT_CLEAR;
+		event_type = INT_POWER_FAULT_CLEAR;
 	} else {
 		/*
 		 *   Power fault
 		 */
 		info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot);
-		taskInfo->event_type = INT_POWER_FAULT;
+		event_type = INT_POWER_FAULT;
 		/* set power fault status for this board */
 		p_slot->status = 0xFF;
 		info("power fault bit %x set\n", hp_slot);
 	}
-	if (rc)
-		up(&event_semaphore);	/* signal event thread that new event is posted */
 
-	return rc;
+	queue_interrupt_event(p_slot, event_type);
+
+	return 1;
 }
 
 /* The following routines constitute the bulk of the 
@@ -242,21 +197,11 @@ static int change_bus_speed(struct controller *ctrl, struct slot *p_slot,
 	int rc = 0;
 
 	dbg("%s: change to speed %d\n", __FUNCTION__, speed);
-	down(&ctrl->crit_sect);
 	if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) {
-		err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__);
-		up(&ctrl->crit_sect);
+		err("%s: Issue of set bus speed mode command failed\n",
+		    __FUNCTION__);
 		return WRONG_BUS_FREQUENCY;
 	}
-		
-	if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
-		err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
-			  __FUNCTION__);
-		err("%s: Error code (%d)\n", __FUNCTION__, rc);
-		up(&ctrl->crit_sect);
-		return WRONG_BUS_FREQUENCY;
-	}
-	up(&ctrl->crit_sect);
 	return rc;
 }
 
@@ -265,33 +210,26 @@ static int fix_bus_speed(struct controller *ctrl, struct slot *pslot,
 		enum pci_bus_speed msp)
 { 
 	int rc = 0;
-	
-	if (flag != 0) { /* Other slots on the same bus are occupied */
-		if ( asp < bsp ) {
-			err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bsp, asp);
-			return WRONG_BUS_FREQUENCY;
+
+	/*
+	 * If other slots on the same bus are occupied, we cannot
+	 * change the bus speed.
+	 */
+	if (flag) {
+		if (asp < bsp) {
+			err("%s: speed of bus %x and adapter %x mismatch\n",
+			    __FUNCTION__, bsp, asp);
+			rc = WRONG_BUS_FREQUENCY;
 		}
+		return rc;
+	}
+
+	if (asp < msp) {
+		if (bsp != asp)
+			rc = change_bus_speed(ctrl, pslot, asp);
 	} else {
-		/* Other slots on the same bus are empty */
-		if (msp == bsp) {
-		/* if adapter_speed >= bus_speed, do nothing */
-			if (asp < bsp) {
-				/* 
-				* Try to lower bus speed to accommodate the adapter if other slots 
-				* on the same controller are empty
-				*/
-				if ((rc = change_bus_speed(ctrl, pslot, asp)))
-					return rc;
-			} 
-		} else {
-			if (asp < msp) {
-				if ((rc = change_bus_speed(ctrl, pslot, asp)))
-					return rc;
-			} else {
-				if ((rc = change_bus_speed(ctrl, pslot, msp)))
-					return rc;
-			}
-		}
+		if (bsp != msp)
+			rc = change_bus_speed(ctrl, pslot, msp);
 	}
 	return rc;
 }
@@ -308,8 +246,7 @@ static int board_added(struct slot *p_slot)
 	u8 hp_slot;
 	u8 slots_not_empty = 0;
 	int rc = 0;
-	enum pci_bus_speed adapter_speed, bus_speed, max_bus_speed;
-	u8 pi, mode;
+	enum pci_bus_speed asp, bsp, msp;
 	struct controller *ctrl = p_slot->ctrl;
 
 	hp_slot = p_slot->device - ctrl->slot_device_offset;
@@ -318,187 +255,68 @@ static int board_added(struct slot *p_slot)
 			__FUNCTION__, p_slot->device,
 			ctrl->slot_device_offset, hp_slot);
 
-	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
-
 	/* Power on slot without connecting to bus */
 	rc = p_slot->hpc_ops->power_on_slot(p_slot);
 	if (rc) {
 		err("%s: Failed to power on slot\n", __FUNCTION__);
-		/* Done with exclusive hardware access */
-		up(&ctrl->crit_sect);
 		return -1;
 	}
 	
-	rc = p_slot->hpc_ops->check_cmd_status(ctrl);
-	if (rc) {
-		err("%s: Failed to power on slot, error code(%d)\n", __FUNCTION__, rc);
-		/* Done with exclusive hardware access */
-		up(&ctrl->crit_sect);
-		return -1;
-	}
-
-	
 	if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) {
 		if (slots_not_empty)
 			return WRONG_BUS_FREQUENCY;
 		
 		if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) {
 			err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__);
-			up(&ctrl->crit_sect);
 			return WRONG_BUS_FREQUENCY;
 		}
 		
-		if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
-			err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
-				  __FUNCTION__);
-			err("%s: Error code (%d)\n", __FUNCTION__, rc);
-			up(&ctrl->crit_sect);
-			return WRONG_BUS_FREQUENCY;
-		}
 		/* turn on board, blink green LED, turn off Amber LED */
 		if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
 			err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
-			up(&ctrl->crit_sect);
 			return rc;
 		}
-
-		if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
-			err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
-			up(&ctrl->crit_sect);
-			return rc;  
-		}
 	}
  
-	rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &adapter_speed);
-	/* 0 = PCI 33Mhz, 1 = PCI 66 Mhz, 2 = PCI-X 66 PA, 4 = PCI-X 66 ECC, */
-	/* 5 = PCI-X 133 PA, 7 = PCI-X 133 ECC,  0xa = PCI-X 133 Mhz 266, */
-	/* 0xd = PCI-X 133 Mhz 533 */
-	/* This encoding is different from the one used in cur_bus_speed & */
-	/* max_bus_speed */
-
-	if (rc  || adapter_speed == PCI_SPEED_UNKNOWN) {
-		err("%s: Can't get adapter speed or bus mode mismatch\n", __FUNCTION__);
-		/* Done with exclusive hardware access */
-		up(&ctrl->crit_sect);
+	rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp);
+	if (rc) {
+		err("%s: Can't get adapter speed or bus mode mismatch\n",
+		    __FUNCTION__);
 		return WRONG_BUS_FREQUENCY;
 	}
 
-	rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bus_speed);
-	if (rc || bus_speed == PCI_SPEED_UNKNOWN) {
+	rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bsp);
+	if (rc) {
 		err("%s: Can't get bus operation speed\n", __FUNCTION__);
-		/* Done with exclusive hardware access */
-		up(&ctrl->crit_sect);
 		return WRONG_BUS_FREQUENCY;
 	}
 
-	rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &max_bus_speed);
-	if (rc || max_bus_speed == PCI_SPEED_UNKNOWN) {
+	rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &msp);
+	if (rc) {
 		err("%s: Can't get max bus operation speed\n", __FUNCTION__);
-		max_bus_speed = bus_speed;
-	}
-
-	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
-
-	if ((rc  = p_slot->hpc_ops->get_prog_int(p_slot, &pi))) {
-		err("%s: Can't get controller programming interface, set it to 1\n", __FUNCTION__);
-		pi = 1;
+		msp = bsp;
 	}
 
 	/* Check if there are other slots or devices on the same bus */
 	if (!list_empty(&ctrl->pci_dev->subordinate->devices))
 		slots_not_empty = 1;
 
-	dbg("%s: slots_not_empty %d, pi %d\n", __FUNCTION__, 
-		slots_not_empty, pi);
-	dbg("adapter_speed %d, bus_speed %d, max_bus_speed %d\n", 
-		adapter_speed, bus_speed, max_bus_speed);
-
-	if (pi == 2) {
-		dbg("%s: In PI = %d\n", __FUNCTION__, pi);
-		if ((rc = p_slot->hpc_ops->get_mode1_ECC_cap(p_slot, &mode))) {
-			err("%s: Can't get Mode1_ECC, set mode to 0\n", __FUNCTION__);
-			mode = 0;
-		}
+	dbg("%s: slots_not_empty %d, adapter_speed %d, bus_speed %d, "
+	    "max_bus_speed %d\n", __FUNCTION__, slots_not_empty, asp,
+	    bsp, msp);
 
-		switch (adapter_speed) {
-		case PCI_SPEED_133MHz_PCIX_533:
-		case PCI_SPEED_133MHz_PCIX_266:
-			if ((bus_speed != adapter_speed) &&
-			   ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 
-				return rc;
-			break;	
-		case PCI_SPEED_133MHz_PCIX_ECC:
-		case PCI_SPEED_133MHz_PCIX:
-			if (mode) { /* Bus - Mode 1 ECC */
-				if ((bus_speed != 0x7) &&
-				   ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 
-					return rc;
-			} else {
-				if ((bus_speed != 0x4) &&
-				   ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 
-					return rc;
-			}
-			break;
-		case PCI_SPEED_66MHz_PCIX_ECC:
-		case PCI_SPEED_66MHz_PCIX:
-			if (mode) { /* Bus - Mode 1 ECC */
-				if ((bus_speed != 0x5) &&
-				   ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 
-					return rc;
-			} else {
-				if ((bus_speed != 0x2) &&
-				   ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 
-					return rc;
-			}
-			break;
-		case PCI_SPEED_66MHz:
-			if ((bus_speed != 0x1) &&
-			   ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 
-				return rc;
-			break;	
-		case PCI_SPEED_33MHz:
-			if (bus_speed > 0x0) {
-				if (slots_not_empty == 0) {
-					if ((rc = change_bus_speed(ctrl, p_slot, adapter_speed)))
-						return rc;
-				} else {
-					err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed);
-					return WRONG_BUS_FREQUENCY;
-				}
-			}
-			break;
-		default:
-			err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed);
-			return WRONG_BUS_FREQUENCY;
-		}
-	} else {
-		/* If adpater_speed == bus_speed, nothing to do here */
-		dbg("%s: In PI = %d\n", __FUNCTION__, pi);
-		if ((adapter_speed != bus_speed) &&
-		   ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
-				return rc;
-	}
+	rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp);
+	if (rc)
+		return rc;
 
-	down(&ctrl->crit_sect);
 	/* turn on board, blink green LED, turn off Amber LED */
 	if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
 		err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
-		up(&ctrl->crit_sect);
 		return rc;
 	}
 
-	if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
-		err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
-		up(&ctrl->crit_sect);
-		return rc;  
-	}
-
-	up(&ctrl->crit_sect);
-
 	/* Wait for ~1 second */
-	wait_for_ctrl_irq (ctrl);
+	msleep(1000);
 
 	dbg("%s: slot status = %x\n", __FUNCTION__, p_slot->status);
 	/* Check for a power fault */
@@ -520,40 +338,18 @@ static int board_added(struct slot *p_slot)
 	p_slot->is_a_board = 0x01;
 	p_slot->pwr_save = 1;
 
-	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
-
 	p_slot->hpc_ops->green_led_on(p_slot);
 
-	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
-
 	return 0;
 
 err_exit:
-	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
-
 	/* turn off slot, turn on Amber LED, turn off Green LED */
 	rc = p_slot->hpc_ops->slot_disable(p_slot);
 	if (rc) {
 		err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
-		/* Done with exclusive hardware access */
-		up(&ctrl->crit_sect);
-		return rc;
-	}
-
-	rc = p_slot->hpc_ops->check_cmd_status(ctrl);
-	if (rc) {
-		err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc);
-		/* Done with exclusive hardware access */
-		up(&ctrl->crit_sect);
 		return rc;
 	}
 
-	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
-
 	return(rc);
 }
 
@@ -580,37 +376,19 @@ static int remove_board(struct slot *p_slot)
 	if (p_slot->is_a_board)
 		p_slot->status = 0x01;
 
-	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
-
 	/* turn off slot, turn on Amber LED, turn off Green LED */
 	rc = p_slot->hpc_ops->slot_disable(p_slot);
 	if (rc) {
 		err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
-		/* Done with exclusive hardware access */
-		up(&ctrl->crit_sect);
 		return rc;
 	}
-
-	rc = p_slot->hpc_ops->check_cmd_status(ctrl);
-	if (rc) {
-		err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc);
-		/* Done with exclusive hardware access */
-		up(&ctrl->crit_sect);
-		return rc;  
-	}
 	
 	rc = p_slot->hpc_ops->set_attention_status(p_slot, 0);
 	if (rc) {
 		err("%s: Issue of Set Attention command failed\n", __FUNCTION__);
-		/* Done with exclusive hardware access */
-		up(&ctrl->crit_sect);
 		return rc;
 	}
 
-	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
-
 	p_slot->pwr_save = 0;
 	p_slot->is_a_board = 0;
 
@@ -618,13 +396,10 @@ static int remove_board(struct slot *p_slot)
 }
 
 
-static void pushbutton_helper_thread (unsigned long data)
-{
-	pushbutton_pending = data;
-
-	up(&event_semaphore);
-}
-
+struct pushbutton_work_info {
+	struct slot *p_slot;
+	struct work_struct work;
+};
 
 /**
  * shpchp_pushbutton_thread
@@ -633,96 +408,63 @@ static void pushbutton_helper_thread (unsigned long data)
  * Handles all pending events and exits.
  *
  */
-static void shpchp_pushbutton_thread (unsigned long slot)
+static void shpchp_pushbutton_thread(void *data)
 {
-	struct slot *p_slot = (struct slot *) slot;
-	u8 getstatus;
-	
-	pushbutton_pending = 0;
-
-	if (!p_slot) {
-		dbg("%s: Error! slot NULL\n", __FUNCTION__);
-		return;
-	}
-
-	p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
-	if (getstatus) {
-		p_slot->state = POWEROFF_STATE;
+	struct pushbutton_work_info *info = data;
+	struct slot *p_slot = info->p_slot;
 
+	mutex_lock(&p_slot->lock);
+	switch (p_slot->state) {
+	case POWEROFF_STATE:
+		mutex_unlock(&p_slot->lock);
 		shpchp_disable_slot(p_slot);
+		mutex_lock(&p_slot->lock);
 		p_slot->state = STATIC_STATE;
-	} else {
-		p_slot->state = POWERON_STATE;
-
-		if (shpchp_enable_slot(p_slot)) {
-			/* Wait for exclusive access to hardware */
-			down(&p_slot->ctrl->crit_sect);
-
+		break;
+	case POWERON_STATE:
+		mutex_unlock(&p_slot->lock);
+		if (shpchp_enable_slot(p_slot))
 			p_slot->hpc_ops->green_led_off(p_slot);
-
-			/* Done with exclusive hardware access */
-			up(&p_slot->ctrl->crit_sect);
-		}
+		mutex_lock(&p_slot->lock);
 		p_slot->state = STATIC_STATE;
+		break;
+	default:
+		break;
 	}
+	mutex_unlock(&p_slot->lock);
 
-	return;
-}
-
-
-/* this is the main worker thread */
-static int event_thread(void* data)
-{
-	struct controller *ctrl;
-	lock_kernel();
-	daemonize("shpchpd_event");
-	unlock_kernel();
-
-	while (1) {
-		dbg("!!!!event_thread sleeping\n");
-		down_interruptible (&event_semaphore);
-		dbg("event_thread woken finished = %d\n", event_finished);
-		if (event_finished || signal_pending(current))
-			break;
-		/* Do stuff here */
-		if (pushbutton_pending)
-			shpchp_pushbutton_thread(pushbutton_pending);
-		else
-			for (ctrl = shpchp_ctrl_list; ctrl; ctrl=ctrl->next)
-				interrupt_event_handler(ctrl);
-	}
-	dbg("event_thread signals exit\n");
-	up(&event_exit);
-	return 0;
+	kfree(info);
 }
 
-int shpchp_event_start_thread (void)
+void queue_pushbutton_work(void *data)
 {
-	int pid;
+	struct slot *p_slot = data;
+	struct pushbutton_work_info *info;
 
-	/* initialize our semaphores */
-	init_MUTEX_LOCKED(&event_exit);
-	event_finished=0;
-
-	init_MUTEX_LOCKED(&event_semaphore);
-	pid = kernel_thread(event_thread, NULL, 0);
-
-	if (pid < 0) {
-		err ("Can't start up our event thread\n");
-		return -1;
+	info = kmalloc(sizeof(*info), GFP_KERNEL);
+	if (!info) {
+		err("%s: Cannot allocate memory\n", __FUNCTION__);
+		return;
 	}
-	return 0;
-}
-
+	info->p_slot = p_slot;
+	INIT_WORK(&info->work, shpchp_pushbutton_thread, info);
 
-void shpchp_event_stop_thread (void)
-{
-	event_finished = 1;
-	up(&event_semaphore);
-	down(&event_exit);
+	mutex_lock(&p_slot->lock);
+	switch (p_slot->state) {
+	case BLINKINGOFF_STATE:
+		p_slot->state = POWEROFF_STATE;
+		break;
+	case BLINKINGON_STATE:
+		p_slot->state = POWERON_STATE;
+		break;
+	default:
+		goto out;
+	}
+	queue_work(shpchp_wq, &info->work);
+ out:
+	mutex_unlock(&p_slot->lock);
 }
 
-
 static int update_slot_info (struct slot *slot)
 {
 	struct hotplug_slot_info *info;
@@ -742,149 +484,110 @@ static int update_slot_info (struct slot *slot)
 	return result;
 }
 
-static void interrupt_event_handler(struct controller *ctrl)
+/*
+ * Note: This function must be called with slot->lock held
+ */
+static void handle_button_press_event(struct slot *p_slot)
 {
-	int loop = 0;
-	int change = 1;
-	u8 hp_slot;
 	u8 getstatus;
-	struct slot *p_slot;
 
-	while (change) {
-		change = 0;
-
-		for (loop = 0; loop < 10; loop++) {
-			if (ctrl->event_queue[loop].event_type != 0) {
-				dbg("%s:loop %x event_type %x\n", __FUNCTION__, loop, 
-					ctrl->event_queue[loop].event_type);
-				hp_slot = ctrl->event_queue[loop].hp_slot;
-
-				p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
-
-				if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) {
-					dbg("%s: button cancel\n", __FUNCTION__);
-					del_timer(&p_slot->task_event);
-
-					switch (p_slot->state) {
-					case BLINKINGOFF_STATE:
-						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
-
-						p_slot->hpc_ops->green_led_on(p_slot);
-
-						p_slot->hpc_ops->set_attention_status(p_slot, 0);
-
-						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
-						break;
-					case BLINKINGON_STATE:
-						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
-
-						p_slot->hpc_ops->green_led_off(p_slot);
-
-						p_slot->hpc_ops->set_attention_status(p_slot, 0);
-
-						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
-
-						break;
-					default:
-						warn("Not a valid state\n");
-						return;
-					}
-					info(msg_button_cancel, p_slot->number);
-					p_slot->state = STATIC_STATE;
-				} else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) {
-					/* Button Pressed (No action on 1st press...) */
-					dbg("%s: Button pressed\n", __FUNCTION__);
-
-					p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
-					if (getstatus) {
-						/* slot is on */
-						dbg("%s: slot is on\n", __FUNCTION__);
-						p_slot->state = BLINKINGOFF_STATE;
-						info(msg_button_off, p_slot->number);
-					} else {
-						/* slot is off */
-						dbg("%s: slot is off\n", __FUNCTION__);
-						p_slot->state = BLINKINGON_STATE;
-						info(msg_button_on, p_slot->number);
-					}
-
-					/* Wait for exclusive access to hardware */
-					down(&ctrl->crit_sect);
-
-					/* blink green LED and turn off amber */
-					p_slot->hpc_ops->green_led_blink(p_slot);
-					
-					p_slot->hpc_ops->set_attention_status(p_slot, 0);
-
-					/* Done with exclusive hardware access */
-					up(&ctrl->crit_sect);
-
-					init_timer(&p_slot->task_event);
-					p_slot->task_event.expires = jiffies + 5 * HZ;   /* 5 second delay */
-					p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread;
-					p_slot->task_event.data = (unsigned long) p_slot;
-
-					dbg("%s: add_timer p_slot = %p\n", __FUNCTION__,(void *) p_slot);
-					add_timer(&p_slot->task_event);
-				} else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) {
-					/***********POWER FAULT********************/
-					dbg("%s: power fault\n", __FUNCTION__);
-					/* Wait for exclusive access to hardware */
-					down(&ctrl->crit_sect);
-
-					p_slot->hpc_ops->set_attention_status(p_slot, 1);
-					
-					p_slot->hpc_ops->green_led_off(p_slot);
-
-					/* Done with exclusive hardware access */
-					up(&ctrl->crit_sect);
-				} else {
-					/* refresh notification */
-					if (p_slot)
-						update_slot_info(p_slot);
-				}
-
-				ctrl->event_queue[loop].event_type = 0;
-
-				change = 1;
-			}
-		}		/* End of FOR loop */
+	switch (p_slot->state) {
+	case STATIC_STATE:
+		p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
+		if (getstatus) {
+			p_slot->state = BLINKINGOFF_STATE;
+			info(msg_button_off, p_slot->number);
+		} else {
+			p_slot->state = BLINKINGON_STATE;
+			info(msg_button_on, p_slot->number);
+		}
+		/* blink green LED and turn off amber */
+		p_slot->hpc_ops->green_led_blink(p_slot);
+		p_slot->hpc_ops->set_attention_status(p_slot, 0);
+
+		schedule_delayed_work(&p_slot->work, 5*HZ);
+		break;
+	case BLINKINGOFF_STATE:
+	case BLINKINGON_STATE:
+		/*
+		 * Cancel if we are still blinking; this means that we
+		 * press the attention again before the 5 sec. limit
+		 * expires to cancel hot-add or hot-remove
+		 */
+		info("Button cancel on Slot(%s)\n", p_slot->name);
+		dbg("%s: button cancel\n", __FUNCTION__);
+		cancel_delayed_work(&p_slot->work);
+		if (p_slot->state == BLINKINGOFF_STATE)
+			p_slot->hpc_ops->green_led_on(p_slot);
+		else
+			p_slot->hpc_ops->green_led_off(p_slot);
+		p_slot->hpc_ops->set_attention_status(p_slot, 0);
+		info(msg_button_cancel, p_slot->number);
+		p_slot->state = STATIC_STATE;
+		break;
+	case POWEROFF_STATE:
+	case POWERON_STATE:
+		/*
+		 * Ignore if the slot is on power-on or power-off state;
+		 * this means that the previous attention button action
+		 * to hot-add or hot-remove is undergoing
+		 */
+		info("Button ignore on Slot(%s)\n", p_slot->name);
+		update_slot_info(p_slot);
+		break;
+	default:
+		warn("Not a valid state\n");
+		break;
 	}
+}
+
+static void interrupt_event_handler(void *data)
+{
+	struct event_info *info = data;
+	struct slot *p_slot = info->p_slot;
+
+	mutex_lock(&p_slot->lock);
+	switch (info->event_type) {
+	case INT_BUTTON_PRESS:
+		handle_button_press_event(p_slot);
+		break;
+	case INT_POWER_FAULT:
+		dbg("%s: power fault\n", __FUNCTION__);
+		p_slot->hpc_ops->set_attention_status(p_slot, 1);
+		p_slot->hpc_ops->green_led_off(p_slot);
+		break;
+	default:
+		update_slot_info(p_slot);
+		break;
+	}
+	mutex_unlock(&p_slot->lock);
 
-	return;
+	kfree(info);
 }
 
 
-int shpchp_enable_slot (struct slot *p_slot)
+static int shpchp_enable_slot (struct slot *p_slot)
 {
 	u8 getstatus = 0;
-	int rc;
+	int rc, retval = -ENODEV;
 
 	/* Check to see if (latch closed, card present, power off) */
-	down(&p_slot->ctrl->crit_sect);
+	mutex_lock(&p_slot->ctrl->crit_sect);
 	rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
 	if (rc || !getstatus) {
 		info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
-		up(&p_slot->ctrl->crit_sect);
-		return -ENODEV;
+		goto out;
 	}
 	rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 	if (rc || getstatus) {
 		info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
-		up(&p_slot->ctrl->crit_sect);
-		return -ENODEV;
+		goto out;
 	}
 	rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
 	if (rc || getstatus) {
 		info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number);
-		up(&p_slot->ctrl->crit_sect);
-		return -ENODEV;
+		goto out;
 	}
-	up(&p_slot->ctrl->crit_sect);
 
 	p_slot->is_a_board = 1;
 
@@ -899,56 +602,119 @@ int shpchp_enable_slot (struct slot *p_slot)
 	     && p_slot->ctrl->num_slots == 1) {
 		/* handle amd pogo errata; this must be done before enable  */
 		amd_pogo_errata_save_misc_reg(p_slot);
-		rc = board_added(p_slot);
+		retval = board_added(p_slot);
 		/* handle amd pogo errata; this must be done after enable  */
 		amd_pogo_errata_restore_misc_reg(p_slot);
 	} else
-		rc = board_added(p_slot);
+		retval = board_added(p_slot);
 
-	if (rc) {
+	if (retval) {
 		p_slot->hpc_ops->get_adapter_status(p_slot,
 				&(p_slot->presence_save));
 		p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 	}
 
 	update_slot_info(p_slot);
-	return rc;
+ out:
+	mutex_unlock(&p_slot->ctrl->crit_sect);
+	return retval;
 }
 
 
-int shpchp_disable_slot (struct slot *p_slot)
+static int shpchp_disable_slot (struct slot *p_slot)
 {
 	u8 getstatus = 0;
-	int ret = 0;
+	int rc, retval = -ENODEV;
 
 	if (!p_slot->ctrl)
 		return -ENODEV;
 
 	/* Check to see if (latch closed, card present, power on) */
-	down(&p_slot->ctrl->crit_sect);
+	mutex_lock(&p_slot->ctrl->crit_sect);
 
-	ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
-	if (ret || !getstatus) {
+	rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
+	if (rc || !getstatus) {
 		info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
-		up(&p_slot->ctrl->crit_sect);
-		return -ENODEV;
+		goto out;
 	}
-	ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
-	if (ret || getstatus) {
+	rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
+	if (rc || getstatus) {
 		info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
-		up(&p_slot->ctrl->crit_sect);
-		return -ENODEV;
+		goto out;
 	}
-	ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
-	if (ret || !getstatus) {
+	rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
+	if (rc || !getstatus) {
 		info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number);
-		up(&p_slot->ctrl->crit_sect);
-		return -ENODEV;
+		goto out;
 	}
-	up(&p_slot->ctrl->crit_sect);
 
-	ret = remove_board(p_slot);
+	retval = remove_board(p_slot);
 	update_slot_info(p_slot);
-	return ret;
+ out:
+	mutex_unlock(&p_slot->ctrl->crit_sect);
+	return retval;
 }
 
+int shpchp_sysfs_enable_slot(struct slot *p_slot)
+{
+	int retval = -ENODEV;
+
+	mutex_lock(&p_slot->lock);
+	switch (p_slot->state) {
+	case BLINKINGON_STATE:
+		cancel_delayed_work(&p_slot->work);
+	case STATIC_STATE:
+		p_slot->state = POWERON_STATE;
+		mutex_unlock(&p_slot->lock);
+		retval = shpchp_enable_slot(p_slot);
+		mutex_lock(&p_slot->lock);
+		p_slot->state = STATIC_STATE;
+		break;
+	case POWERON_STATE:
+		info("Slot %s is already in powering on state\n",
+		     p_slot->name);
+		break;
+	case BLINKINGOFF_STATE:
+	case POWEROFF_STATE:
+		info("Already enabled on slot %s\n", p_slot->name);
+		break;
+	default:
+		err("Not a valid state on slot %s\n", p_slot->name);
+		break;
+	}
+	mutex_unlock(&p_slot->lock);
+
+	return retval;
+}
+
+int shpchp_sysfs_disable_slot(struct slot *p_slot)
+{
+	int retval = -ENODEV;
+
+	mutex_lock(&p_slot->lock);
+	switch (p_slot->state) {
+	case BLINKINGOFF_STATE:
+		cancel_delayed_work(&p_slot->work);
+	case STATIC_STATE:
+		p_slot->state = POWEROFF_STATE;
+		mutex_unlock(&p_slot->lock);
+		retval = shpchp_disable_slot(p_slot);
+		mutex_lock(&p_slot->lock);
+		p_slot->state = STATIC_STATE;
+		break;
+	case POWEROFF_STATE:
+		info("Slot %s is already in powering off state\n",
+		     p_slot->name);
+		break;
+	case BLINKINGON_STATE:
+	case POWERON_STATE:
+		info("Already disabled on slot %s\n", p_slot->name);
+		break;
+	default:
+		err("Not a valid state on slot %s\n", p_slot->name);
+		break;
+	}
+	mutex_unlock(&p_slot->lock);
+
+	return retval;
+}
diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c
index b4226ff3a854..66123cf4deaa 100644
--- a/drivers/pci/hotplug/shpchp_hpc.c
+++ b/drivers/pci/hotplug/shpchp_hpc.c
@@ -82,31 +82,6 @@
 #define SLOT_100MHZ_PCIX_533	0x0f000000
 #define SLOT_133MHZ_PCIX_533	0xf0000000
 
-
-/* Secondary Bus Configuration Register */
-/* For PI = 1, Bits 0 to 2 have been encoded as follows to show current bus speed/mode */
-#define PCI_33MHZ		0x0
-#define PCI_66MHZ		0x1
-#define PCIX_66MHZ		0x2
-#define PCIX_100MHZ		0x3
-#define PCIX_133MHZ		0x4
-
-/* For PI = 2, Bits 0 to 3 have been encoded as follows to show current bus speed/mode */
-#define PCI_33MHZ		0x0
-#define PCI_66MHZ		0x1
-#define PCIX_66MHZ		0x2
-#define PCIX_100MHZ		0x3
-#define PCIX_133MHZ		0x4
-#define PCIX_66MHZ_ECC		0x5
-#define PCIX_100MHZ_ECC		0x6
-#define PCIX_133MHZ_ECC		0x7
-#define PCIX_66MHZ_266		0x9
-#define PCIX_100MHZ_266		0xa
-#define PCIX_133MHZ_266		0xb
-#define PCIX_66MHZ_533		0x11
-#define PCIX_100MHZ_533		0x12
-#define PCIX_133MHZ_533		0x13
-
 /* Slot Configuration */
 #define SLOT_NUM		0x0000001F
 #define	FIRST_DEV_NUM		0x00001F00
@@ -231,6 +206,7 @@ static spinlock_t list_lock;
 static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs);
 
 static void start_int_poll_timer(struct php_ctlr_state_s *php_ctlr, int seconds);
+static int hpc_check_cmd_status(struct controller *ctrl);
 
 /* This is the interrupt polling timeout function. */
 static void int_poll_timeout(unsigned long lphp_ctlr)
@@ -303,10 +279,13 @@ static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd)
 	int i;
 
 	DBG_ENTER_ROUTINE 
-	
+
+	mutex_lock(&slot->ctrl->cmd_lock);
+
 	if (!php_ctlr) {
 		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
-		return -1;
+		retval = -EINVAL;
+		goto out;
 	}
 
 	for (i = 0; i < 10; i++) {
@@ -323,7 +302,8 @@ static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd)
 	if (cmd_status & 0x1) { 
 		/* After 1 sec and and the controller is still busy */
 		err("%s : Controller is still busy after 1 sec.\n", __FUNCTION__);
-		return -1;
+		retval = -EBUSY;
+		goto out;
 	}
 
 	++t_slot;
@@ -340,6 +320,17 @@ static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd)
 	 * Wait for command completion.
 	 */
 	retval = shpc_wait_cmd(slot->ctrl);
+	if (retval)
+		goto out;
+
+	cmd_status = hpc_check_cmd_status(slot->ctrl);
+	if (cmd_status) {
+		err("%s: Failed to issued command 0x%x (error code = %d)\n",
+		    __FUNCTION__, cmd, cmd_status);
+		retval = -EIO;
+	}
+ out:
+	mutex_unlock(&slot->ctrl->cmd_lock);
 
 	DBG_LEAVE_ROUTINE 
 	return retval;
@@ -532,81 +523,41 @@ static int hpc_get_prog_int(struct slot *slot, u8 *prog_int)
 
 static int hpc_get_adapter_speed(struct slot *slot, enum pci_bus_speed *value)
 {
-	struct php_ctlr_state_s *php_ctlr = slot->ctrl->hpc_ctlr_handle;
-	u32 slot_reg;
-	u16 slot_status, sec_bus_status;
-	u8 m66_cap, pcix_cap, pi;
 	int retval = 0;
+	struct php_ctlr_state_s *php_ctlr = slot->ctrl->hpc_ctlr_handle;
+	u32 slot_reg = readl(php_ctlr->creg + SLOT1 + 4 * slot->hp_slot);
+	u8 pcix_cap = (slot_reg >> 12) & 7;
+	u8 m66_cap  = (slot_reg >> 9) & 1;
 
 	DBG_ENTER_ROUTINE 
 
-	if (!slot->ctrl->hpc_ctlr_handle) {
-		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
-		return -1;
-	}
-
-	if (slot->hp_slot >= php_ctlr->num_slots) {
-		err("%s: Invalid HPC slot number!\n", __FUNCTION__);
-		return -1;
-	}
-	
-	pi = readb(php_ctlr->creg + PROG_INTERFACE);
-	slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot));
-	dbg("%s: pi = %d, slot_reg = %x\n", __FUNCTION__, pi, slot_reg);
-	slot_status = (u16) slot_reg;
-	dbg("%s: slot_status = %x\n", __FUNCTION__, slot_status);
-	sec_bus_status = readw(php_ctlr->creg + SEC_BUS_CONFIG);
-
-	pcix_cap = (u8) ((slot_status & 0x3000) >> 12);
-	dbg("%s:  pcix_cap = %x\n", __FUNCTION__, pcix_cap);
-	m66_cap = (u8) ((slot_status & 0x0200) >> 9);
-	dbg("%s:  m66_cap = %x\n", __FUNCTION__, m66_cap);
-
+	dbg("%s: slot_reg = %x, pcix_cap = %x, m66_cap = %x\n",
+	    __FUNCTION__, slot_reg, pcix_cap, m66_cap);
 
-	if (pi == 2) {
-		switch (pcix_cap) {
-		case 0:
-			*value = m66_cap ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
-			break;
-		case 1:
-			*value = PCI_SPEED_66MHz_PCIX;
-			break;
-		case 3:
-			*value = PCI_SPEED_133MHz_PCIX;
-			break;
-		case 4:
-			*value = PCI_SPEED_133MHz_PCIX_266;	
-			break;
-		case 5:
-			*value = PCI_SPEED_133MHz_PCIX_533;	
-			break;
-		case 2:	/* Reserved */
-		default:
-			*value = PCI_SPEED_UNKNOWN;
-			retval = -ENODEV;
-			break;
-		}
-	} else {
-		switch (pcix_cap) {
-		case 0:
-			*value = m66_cap ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
-			break;
-		case 1:
-			*value = PCI_SPEED_66MHz_PCIX;
-			break;
-		case 3:
-			*value = PCI_SPEED_133MHz_PCIX;	
-			break;
-		case 2:	/* Reserved */
-		default:
-			*value = PCI_SPEED_UNKNOWN;
-			retval = -ENODEV;
-			break;
-		}
+	switch (pcix_cap) {
+	case 0x0:
+		*value = m66_cap ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
+		break;
+	case 0x1:
+		*value = PCI_SPEED_66MHz_PCIX;
+		break;
+	case 0x3:
+		*value = PCI_SPEED_133MHz_PCIX;
+		break;
+	case 0x4:
+		*value = PCI_SPEED_133MHz_PCIX_266;
+		break;
+	case 0x5:
+		*value = PCI_SPEED_133MHz_PCIX_533;
+		break;
+	case 0x2:
+	default:
+		*value = PCI_SPEED_UNKNOWN;
+		retval = -ENODEV;
+		break;
 	}
 
 	dbg("Adapter speed = %d\n", *value);
-	
 	DBG_LEAVE_ROUTINE 
 	return retval;
 }
@@ -797,6 +748,7 @@ static void hpc_release_ctlr(struct controller *ctrl)
 {
 	struct php_ctlr_state_s *php_ctlr = ctrl->hpc_ctlr_handle;
 	struct php_ctlr_state_s *p, *p_prev;
+	int i;
 
 	DBG_ENTER_ROUTINE 
 
@@ -805,6 +757,14 @@ static void hpc_release_ctlr(struct controller *ctrl)
 		return ;
 	}
 
+	/*
+	 * Mask all slot event interrupts
+	 */
+	for (i = 0; i < ctrl->num_slots; i++)
+		writel(0xffff3fff, php_ctlr->creg + SLOT1 + (4 * i));
+
+	cleanup_slots(ctrl);
+
 	if (shpchp_poll_mode) {
 	    del_timer(&php_ctlr->int_poll_timer);
 	} else {	
@@ -814,6 +774,7 @@ static void hpc_release_ctlr(struct controller *ctrl)
 			pci_disable_msi(php_ctlr->pci_dev);
 		}
 	}
+
 	if (php_ctlr->pci_dev) {
 		iounmap(php_ctlr->creg);
 		release_mem_region(ctrl->mmio_base, ctrl->mmio_size);
@@ -939,98 +900,66 @@ static int hpc_slot_disable(struct slot * slot)
 
 static int hpc_set_bus_speed_mode(struct slot * slot, enum pci_bus_speed value)
 {
-	u8 slot_cmd;
-	u8 pi;
-	int retval = 0;
+	int retval;
 	struct php_ctlr_state_s *php_ctlr = slot->ctrl->hpc_ctlr_handle;
+	u8 pi, cmd;
 
 	DBG_ENTER_ROUTINE 
-	
-	if (!slot->ctrl->hpc_ctlr_handle) {
-		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
-		return -1;
-	}
 
 	pi = readb(php_ctlr->creg + PROG_INTERFACE);
-	
-	if (pi == 1) {
-		switch (value) {
-		case 0:
-			slot_cmd = SETA_PCI_33MHZ;
-			break;
-		case 1:
-			slot_cmd = SETA_PCI_66MHZ;
-			break;
-		case 2:
-			slot_cmd = SETA_PCIX_66MHZ;
-			break;
-		case 3:
-			slot_cmd = SETA_PCIX_100MHZ;	
-			break;
-		case 4:
-			slot_cmd = SETA_PCIX_133MHZ;	
-			break;
-		default:
-			slot_cmd = PCI_SPEED_UNKNOWN;
-			retval = -ENODEV;
-			return retval;	
-		}
-	} else {
-		switch (value) {
-		case 0:
-			slot_cmd = SETB_PCI_33MHZ;
-			break;
-		case 1:
-			slot_cmd = SETB_PCI_66MHZ;
-			break;
-		case 2:
-			slot_cmd = SETB_PCIX_66MHZ_PM;
-			break;
-		case 3:
-			slot_cmd = SETB_PCIX_100MHZ_PM;	
-			break;
-		case 4:
-			slot_cmd = SETB_PCIX_133MHZ_PM;	
-			break;
-		case 5:
-			slot_cmd = SETB_PCIX_66MHZ_EM;	
-			break;
-		case 6:
-			slot_cmd = SETB_PCIX_100MHZ_EM;	
-			break;
-		case 7:
-			slot_cmd = SETB_PCIX_133MHZ_EM;	
-			break;
-		case 8:
-			slot_cmd = SETB_PCIX_66MHZ_266;	
-			break;
-		case 0x9:
-			slot_cmd = SETB_PCIX_100MHZ_266;	
-			break;
-		case 0xa:
-			slot_cmd = SETB_PCIX_133MHZ_266;	
-			break;
-		case 0xb:
-			slot_cmd = SETB_PCIX_66MHZ_533;	
-			break;
-		case 0xc:
-			slot_cmd = SETB_PCIX_100MHZ_533;	
-			break;
-		case 0xd:
-			slot_cmd = SETB_PCIX_133MHZ_533;	
-			break;
-		default:
-			slot_cmd = PCI_SPEED_UNKNOWN;
-			retval = -ENODEV;
-			return retval;	
-		}
+	if ((pi == 1) && (value > PCI_SPEED_133MHz_PCIX))
+		return -EINVAL;
 
+	switch (value) {
+	case PCI_SPEED_33MHz:
+		cmd = SETA_PCI_33MHZ;
+		break;
+	case PCI_SPEED_66MHz:
+		cmd = SETA_PCI_66MHZ;
+		break;
+	case PCI_SPEED_66MHz_PCIX:
+		cmd = SETA_PCIX_66MHZ;
+		break;
+	case PCI_SPEED_100MHz_PCIX:
+		cmd = SETA_PCIX_100MHZ;
+		break;
+	case PCI_SPEED_133MHz_PCIX:
+		cmd = SETA_PCIX_133MHZ;
+		break;
+	case PCI_SPEED_66MHz_PCIX_ECC:
+		cmd = SETB_PCIX_66MHZ_EM;
+		break;
+	case PCI_SPEED_100MHz_PCIX_ECC:
+		cmd = SETB_PCIX_100MHZ_EM;
+		break;
+	case PCI_SPEED_133MHz_PCIX_ECC:
+		cmd = SETB_PCIX_133MHZ_EM;
+		break;
+	case PCI_SPEED_66MHz_PCIX_266:
+		cmd = SETB_PCIX_66MHZ_266;
+		break;
+	case PCI_SPEED_100MHz_PCIX_266:
+		cmd = SETB_PCIX_100MHZ_266;
+		break;
+	case PCI_SPEED_133MHz_PCIX_266:
+		cmd = SETB_PCIX_133MHZ_266;
+		break;
+	case PCI_SPEED_66MHz_PCIX_533:
+		cmd = SETB_PCIX_66MHZ_533;
+		break;
+	case PCI_SPEED_100MHz_PCIX_533:
+		cmd = SETB_PCIX_100MHZ_533;
+		break;
+	case PCI_SPEED_133MHz_PCIX_533:
+		cmd = SETB_PCIX_133MHZ_533;
+		break;
+	default:
+		return -EINVAL;
 	}
-	retval = shpc_write_cmd(slot, 0, slot_cmd);
-	if (retval) {
+
+	retval = shpc_write_cmd(slot, 0, cmd);
+	if (retval)
 		err("%s: Write command failed!\n", __FUNCTION__);
-		return -1;
-	}
 
 	DBG_LEAVE_ROUTINE
 	return retval;
@@ -1093,14 +1022,8 @@ static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs)
 		wake_up_interruptible(&ctrl->queue);
 	}
 
-	if ((intr_loc = (intr_loc >> 1)) == 0) {
-		/* Unmask Global Interrupt Mask */
-		temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
-		temp_dword &= 0xfffffffe;
-		writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE);
-
-		return IRQ_NONE;
-	}
+	if ((intr_loc = (intr_loc >> 1)) == 0)
+		goto out;
 
 	for (hp_slot = 0; hp_slot < ctrl->num_slots; hp_slot++) { 
 	/* To find out which slot has interrupt pending */
@@ -1130,6 +1053,7 @@ static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs)
 			dbg("%s: intr_loc2 = %x\n",__FUNCTION__, intr_loc2); 
 		}
 	}
+ out:
 	if (!shpchp_poll_mode) {
 		/* Unmask Global Interrupt Mask */
 		temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
@@ -1142,64 +1066,43 @@ static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs)
 
 static int hpc_get_max_bus_speed (struct slot *slot, enum pci_bus_speed *value)
 {
+	int retval = 0;
 	struct php_ctlr_state_s *php_ctlr = slot->ctrl->hpc_ctlr_handle;
 	enum pci_bus_speed bus_speed = PCI_SPEED_UNKNOWN;
-	int retval = 0;
-	u8 pi;
-	u32 slot_avail1, slot_avail2;
+	u8 pi = readb(php_ctlr->creg + PROG_INTERFACE);
+	u32 slot_avail1 = readl(php_ctlr->creg + SLOT_AVAIL1);
+	u32 slot_avail2 = readl(php_ctlr->creg + SLOT_AVAIL2);
 
 	DBG_ENTER_ROUTINE 
 
-	if (!slot->ctrl->hpc_ctlr_handle) {
-		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
-		return -1;
-	}
-
-	if (slot->hp_slot >= php_ctlr->num_slots) {
-		err("%s: Invalid HPC slot number!\n", __FUNCTION__);
-		return -1;
-	}
-
-	pi = readb(php_ctlr->creg + PROG_INTERFACE);
-	slot_avail1 = readl(php_ctlr->creg + SLOT_AVAIL1);
-	slot_avail2 = readl(php_ctlr->creg + SLOT_AVAIL2);
-
 	if (pi == 2) {
 		if (slot_avail2 & SLOT_133MHZ_PCIX_533)
-			bus_speed = PCIX_133MHZ_533;
+			bus_speed = PCI_SPEED_133MHz_PCIX_533;
 		else if (slot_avail2 & SLOT_100MHZ_PCIX_533)
-			bus_speed = PCIX_100MHZ_533;
+			bus_speed = PCI_SPEED_100MHz_PCIX_533;
 		else if (slot_avail2 & SLOT_66MHZ_PCIX_533)
-			bus_speed = PCIX_66MHZ_533;
+			bus_speed = PCI_SPEED_66MHz_PCIX_533;
 		else if (slot_avail2 & SLOT_133MHZ_PCIX_266)
-			bus_speed = PCIX_133MHZ_266;
+			bus_speed = PCI_SPEED_133MHz_PCIX_266;
 		else if (slot_avail2 & SLOT_100MHZ_PCIX_266)
-			bus_speed = PCIX_100MHZ_266;
+			bus_speed = PCI_SPEED_100MHz_PCIX_266;
 		else if (slot_avail2 & SLOT_66MHZ_PCIX_266)
-			bus_speed = PCIX_66MHZ_266;
-		else if (slot_avail1 & SLOT_133MHZ_PCIX)
-			bus_speed = PCIX_133MHZ;
-		else if (slot_avail1 & SLOT_100MHZ_PCIX)
-			bus_speed = PCIX_100MHZ;
-		else if (slot_avail1 & SLOT_66MHZ_PCIX)
-			bus_speed = PCIX_66MHZ;
-		else if (slot_avail2 & SLOT_66MHZ)
-			bus_speed = PCI_66MHZ;
-		else if (slot_avail1 & SLOT_33MHZ)
-			bus_speed = PCI_33MHZ;
-		else bus_speed = PCI_SPEED_UNKNOWN;
-	} else {
+			bus_speed = PCI_SPEED_66MHz_PCIX_266;
+	}
+
+	if (bus_speed == PCI_SPEED_UNKNOWN) {
 		if (slot_avail1 & SLOT_133MHZ_PCIX)
-			bus_speed = PCIX_133MHZ;
+			bus_speed = PCI_SPEED_133MHz_PCIX;
 		else if (slot_avail1 & SLOT_100MHZ_PCIX)
-			bus_speed = PCIX_100MHZ;
+			bus_speed = PCI_SPEED_100MHz_PCIX;
 		else if (slot_avail1 & SLOT_66MHZ_PCIX)
-			bus_speed = PCIX_66MHZ;
+			bus_speed = PCI_SPEED_66MHz_PCIX;
 		else if (slot_avail2 & SLOT_66MHZ)
-			bus_speed = PCI_66MHZ;
+			bus_speed = PCI_SPEED_66MHz;
 		else if (slot_avail1 & SLOT_33MHZ)
-			bus_speed = PCI_33MHZ;
-		else bus_speed = PCI_SPEED_UNKNOWN;
+			bus_speed = PCI_SPEED_33MHz;
+		else
+			retval = -ENODEV;
 	}
 
 	*value = bus_speed;
@@ -1210,111 +1113,69 @@ static int hpc_get_max_bus_speed (struct slot *slot, enum pci_bus_speed *value)
 
 static int hpc_get_cur_bus_speed (struct slot *slot, enum pci_bus_speed *value)
 {
+	int retval = 0;
 	struct php_ctlr_state_s *php_ctlr = slot->ctrl->hpc_ctlr_handle;
 	enum pci_bus_speed bus_speed = PCI_SPEED_UNKNOWN;
-	u16 sec_bus_status;
-	int retval = 0;
-	u8 pi;
+	u16 sec_bus_reg = readw(php_ctlr->creg + SEC_BUS_CONFIG);
+	u8 pi = readb(php_ctlr->creg + PROG_INTERFACE);
+	u8 speed_mode = (pi == 2) ? (sec_bus_reg & 0xF) : (sec_bus_reg & 0x7);
 
 	DBG_ENTER_ROUTINE 
 
-	if (!slot->ctrl->hpc_ctlr_handle) {
-		err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
-		return -1;
-	}
-
-	if (slot->hp_slot >= php_ctlr->num_slots) {
-		err("%s: Invalid HPC slot number!\n", __FUNCTION__);
-		return -1;
+	if ((pi == 1) && (speed_mode > 4)) {
+		*value = PCI_SPEED_UNKNOWN;
+		return -ENODEV;
 	}
 
-	pi = readb(php_ctlr->creg + PROG_INTERFACE);
-	sec_bus_status = readw(php_ctlr->creg + SEC_BUS_CONFIG);
-
-	if (pi == 2) {
-		switch (sec_bus_status & 0x000f) {
-		case 0:
-			bus_speed = PCI_SPEED_33MHz;
-			break;
-		case 1:
-			bus_speed = PCI_SPEED_66MHz;
-			break;
-		case 2:
-			bus_speed = PCI_SPEED_66MHz_PCIX;
-			break;
-		case 3:
-			bus_speed = PCI_SPEED_100MHz_PCIX;	
-			break;
-		case 4:
-			bus_speed = PCI_SPEED_133MHz_PCIX;	
-			break;
-		case 5:
-			bus_speed = PCI_SPEED_66MHz_PCIX_ECC;
-			break;
-		case 6:
-			bus_speed = PCI_SPEED_100MHz_PCIX_ECC;
-			break;
-		case 7:
-			bus_speed = PCI_SPEED_133MHz_PCIX_ECC;	
-			break;
-		case 8:
-			bus_speed = PCI_SPEED_66MHz_PCIX_266;	
-			break;
-		case 9:
-			bus_speed = PCI_SPEED_100MHz_PCIX_266;	
-			break;
-		case 0xa:
-			bus_speed = PCI_SPEED_133MHz_PCIX_266;	
-			break;
-		case 0xb:
-			bus_speed = PCI_SPEED_66MHz_PCIX_533;	
-			break;
-		case 0xc:
-			bus_speed = PCI_SPEED_100MHz_PCIX_533;	
-			break;
-		case 0xd:
-			bus_speed = PCI_SPEED_133MHz_PCIX_533;	
-			break;
-		case 0xe:
-		case 0xf:
-		default:
-			bus_speed = PCI_SPEED_UNKNOWN;
-			break;
-		}
-	} else {
-		/* In the case where pi is undefined, default it to 1 */ 
-		switch (sec_bus_status & 0x0007) {
-		case 0:
-			bus_speed = PCI_SPEED_33MHz;
-			break;
-		case 1:
-			bus_speed = PCI_SPEED_66MHz;
-			break;
-		case 2:
-			bus_speed = PCI_SPEED_66MHz_PCIX;
-			break;
-		case 3:
-			bus_speed = PCI_SPEED_100MHz_PCIX;	
-			break;
-		case 4:
-			bus_speed = PCI_SPEED_133MHz_PCIX;	
-			break;
-		case 5:
-			bus_speed = PCI_SPEED_UNKNOWN;		/*	Reserved */
-			break;
-		case 6:
-			bus_speed = PCI_SPEED_UNKNOWN;		/*	Reserved */
-			break;
-		case 7:
-			bus_speed = PCI_SPEED_UNKNOWN;		/*	Reserved */	
-			break;
-		default:
-			bus_speed = PCI_SPEED_UNKNOWN;
-			break;
-		}
+	switch (speed_mode) {
+	case 0x0:
+		*value = PCI_SPEED_33MHz;
+		break;
+	case 0x1:
+		*value = PCI_SPEED_66MHz;
+		break;
+	case 0x2:
+		*value = PCI_SPEED_66MHz_PCIX;
+		break;
+	case 0x3:
+		*value = PCI_SPEED_100MHz_PCIX;
+		break;
+	case 0x4:
+		*value = PCI_SPEED_133MHz_PCIX;
+		break;
+	case 0x5:
+		*value = PCI_SPEED_66MHz_PCIX_ECC;
+		break;
+	case 0x6:
+		*value = PCI_SPEED_100MHz_PCIX_ECC;
+		break;
+	case 0x7:
+		*value = PCI_SPEED_133MHz_PCIX_ECC;
+		break;
+	case 0x8:
+		*value = PCI_SPEED_66MHz_PCIX_266;
+		break;
+	case 0x9:
+		*value = PCI_SPEED_100MHz_PCIX_266;
+		break;
+	case 0xa:
+		*value = PCI_SPEED_133MHz_PCIX_266;
+		break;
+	case 0xb:
+		*value = PCI_SPEED_66MHz_PCIX_533;
+		break;
+	case 0xc:
+		*value = PCI_SPEED_100MHz_PCIX_533;
+		break;
+	case 0xd:
+		*value = PCI_SPEED_133MHz_PCIX_533;
+		break;
+	default:
+		*value = PCI_SPEED_UNKNOWN;
+		retval = -ENODEV;
+		break;
 	}
 
-	*value = bus_speed;
 	dbg("Current bus speed = %d\n", bus_speed);
 	DBG_LEAVE_ROUTINE 
 	return retval;
@@ -1343,7 +1204,6 @@ static struct hpc_ops shpchp_hpc_ops = {
 	.green_led_blink		= hpc_set_green_led_blink,
 	
 	.release_ctlr			= hpc_release_ctlr,
-	.check_cmd_status		= hpc_check_cmd_status,
 };
 
 inline static int shpc_indirect_creg_read(struct controller *ctrl, int index,
@@ -1375,15 +1235,13 @@ int shpc_init(struct controller * ctrl, struct pci_dev * pdev)
 	ctrl->pci_dev = pdev;  /* pci_dev of the P2P bridge */
 
 	spin_lock_init(&list_lock);
-	php_ctlr = (struct php_ctlr_state_s *) kmalloc(sizeof(struct php_ctlr_state_s), GFP_KERNEL);
+	php_ctlr = kzalloc(sizeof(*php_ctlr), GFP_KERNEL);
 
 	if (!php_ctlr) {	/* allocate controller state data */
 		err("%s: HPC controller memory allocation error!\n", __FUNCTION__);
 		goto abort;
 	}
 
-	memset(php_ctlr, 0, sizeof(struct php_ctlr_state_s));
-
 	php_ctlr->pci_dev = pdev;	/* save pci_dev in context */
 
 	if ((pdev->vendor == PCI_VENDOR_ID_AMD) || (pdev->device ==
@@ -1454,7 +1312,9 @@ int shpc_init(struct controller * ctrl, struct pci_dev * pdev)
 	}
 	dbg("%s: php_ctlr->creg %p\n", __FUNCTION__, php_ctlr->creg);
 
-	init_MUTEX(&ctrl->crit_sect);
+	mutex_init(&ctrl->crit_sect);
+	mutex_init(&ctrl->cmd_lock);
+
 	/* Setup wait queue */
 	init_waitqueue_head(&ctrl->queue);
 
diff --git a/drivers/pci/hotplug/shpchp_pci.c b/drivers/pci/hotplug/shpchp_pci.c
index 19e1a5e1e30b..257adc233996 100644
--- a/drivers/pci/hotplug/shpchp_pci.c
+++ b/drivers/pci/hotplug/shpchp_pci.c
@@ -38,7 +38,7 @@ static void program_fw_provided_values(struct pci_dev *dev)
 {
 	u16 pci_cmd, pci_bctl;
 	struct pci_dev *cdev;
-	struct hotplug_params hpp = {0x8, 0x40, 0, 0}; /* defaults */
+	struct hotplug_params hpp;
 
 	/* Program hpp values for this device */
 	if (!(dev->hdr_type == PCI_HEADER_TYPE_NORMAL ||
@@ -46,7 +46,13 @@ static void program_fw_provided_values(struct pci_dev *dev)
 			(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
 		return;
 
-	get_hp_params_from_firmware(dev, &hpp);
+	/* use default values if we can't get them from firmware */
+	if (get_hp_params_from_firmware(dev, &hpp)) {
+		hpp.cache_line_size = 8;
+		hpp.latency_timer = 0x40;
+		hpp.enable_serr = 0;
+		hpp.enable_perr = 0;
+	}
 
 	pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, hpp.cache_line_size);
 	pci_write_config_byte(dev, PCI_LATENCY_TIMER, hpp.latency_timer);
diff --git a/drivers/pci/hotplug/shpchprm_legacy.c b/drivers/pci/hotplug/shpchprm_legacy.c
deleted file mode 100644
index ed6c1254bf6f..000000000000
--- a/drivers/pci/hotplug/shpchprm_legacy.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * SHPCHPRM Legacy: PHP Resource Manager for Non-ACPI/Legacy platform
- *
- * Copyright (C) 1995,2001 Compaq Computer Corporation
- * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
- * Copyright (C) 2001 IBM Corp.
- * Copyright (C) 2003-2004 Intel Corporation
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <greg@kroah.com>,<kristen.c.accardi@intel.com>
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include "shpchp.h"
-
-int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum)
-{
-	int	offset = devnum - ctrl->slot_device_offset;
-
-	*sun = (u8) (ctrl->first_slot + ctrl->slot_num_inc * offset);
-	return 0;
-}
-
-void get_hp_params_from_firmware(struct pci_dev *dev,
-		struct hotplug_params *hpp)
-{
-	return;
-}
-
-void get_hp_hw_control_from_firmware(struct pci_dev *dev)
-{
-	return;
-}
-
diff --git a/drivers/pci/hotplug/shpchprm_nonacpi.c b/drivers/pci/hotplug/shpchprm_nonacpi.c
deleted file mode 100644
index c6b40998eeb3..000000000000
--- a/drivers/pci/hotplug/shpchprm_nonacpi.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * SHPCHPRM NONACPI: PHP Resource Manager for Non-ACPI/Legacy platform
- *
- * Copyright (C) 1995,2001 Compaq Computer Corporation
- * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
- * Copyright (C) 2001 IBM Corp.
- * Copyright (C) 2003-2004 Intel Corporation
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
- *
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-
-#include "shpchp.h"
-
-int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum)
-{
-	int	offset = devnum - ctrl->slot_device_offset;
-
-	dbg("%s: ctrl->slot_num_inc %d, offset %d\n", __FUNCTION__, ctrl->slot_num_inc, offset);
-	*sun = (u8) (ctrl->first_slot + ctrl->slot_num_inc * offset);
-	return 0;
-}
-
-void get_hp_params_from_firmware(struct pci_dev *dev,
-		struct hotplug_params *hpp)
-{
-	return;
-}
-
-void get_hp_hw_control_from_firmware(struct pci_dev *dev)
-{
-	return;
-}
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 48723d6fa60f..a77e79c8c82e 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -103,9 +103,9 @@ static void set_msi_affinity(unsigned int vector, cpumask_t cpu_mask)
 	switch (entry->msi_attrib.type) {
 	case PCI_CAP_ID_MSI:
 	{
-		int pos;
+		int pos = pci_find_capability(entry->dev, PCI_CAP_ID_MSI);
 
-   		if (!(pos = pci_find_capability(entry->dev, PCI_CAP_ID_MSI)))
+		if (!pos)
 			return;
 
 		pci_read_config_dword(entry->dev, msi_lower_address_reg(pos),
@@ -347,9 +347,9 @@ static int assign_msi_vector(void)
 
 static int get_new_vector(void)
 {
-	int vector;
+	int vector = assign_msi_vector();
 
-	if ((vector = assign_msi_vector()) > 0)
+	if (vector > 0)
 		set_intr_gate(vector, interrupt[vector]);
 
 	return vector;
@@ -369,7 +369,8 @@ static int msi_init(void)
 		return status;
 	}
 
-	if ((status = msi_cache_init()) < 0) {
+	status = msi_cache_init();
+	if (status < 0) {
 		pci_msi_enable = 0;
 		printk(KERN_WARNING "PCI: MSI cache init failed\n");
 		return status;
@@ -523,10 +524,12 @@ static int msi_capability_init(struct pci_dev *dev)
    	pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
 	pci_read_config_word(dev, msi_control_reg(pos), &control);
 	/* MSI Entry Initialization */
-	if (!(entry = alloc_msi_entry()))
+	entry = alloc_msi_entry();
+	if (!entry)
 		return -ENOMEM;
 
-	if ((vector = get_msi_vector(dev)) < 0) {
+	vector = get_msi_vector(dev);
+	if (vector < 0) {
 		kmem_cache_free(msi_cachep, entry);
 		return -EBUSY;
 	}
@@ -597,7 +600,8 @@ static int msix_capability_init(struct pci_dev *dev,
 	struct msg_address address;
 	struct msg_data data;
 	int vector, pos, i, j, nr_entries, temp = 0;
-	u32 phys_addr, table_offset;
+	unsigned long phys_addr;
+	u32 table_offset;
  	u16 control;
 	u8 bir;
 	void __iomem *base;
@@ -606,11 +610,11 @@ static int msix_capability_init(struct pci_dev *dev,
 	/* Request & Map MSI-X table region */
  	pci_read_config_word(dev, msi_control_reg(pos), &control);
 	nr_entries = multi_msix_capable(control);
- 	pci_read_config_dword(dev, msix_table_offset_reg(pos),
- 		&table_offset);
+
+ 	pci_read_config_dword(dev, msix_table_offset_reg(pos), &table_offset);
 	bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);
-	phys_addr = pci_resource_start (dev, bir);
-	phys_addr += (u32)(table_offset & ~PCI_MSIX_FLAGS_BIRMASK);
+	table_offset &= ~PCI_MSIX_FLAGS_BIRMASK;
+	phys_addr = pci_resource_start (dev, bir) + table_offset;
 	base = ioremap_nocache(phys_addr, nr_entries * PCI_MSIX_ENTRY_SIZE);
 	if (base == NULL)
 		return -ENOMEM;
@@ -620,7 +624,8 @@ static int msix_capability_init(struct pci_dev *dev,
 		entry = alloc_msi_entry();
 		if (!entry)
 			break;
-		if ((vector = get_msi_vector(dev)) < 0)
+		vector = get_msi_vector(dev);
+		if (vector < 0)
 			break;
 
  		j = entries[i].entry;
@@ -699,12 +704,17 @@ int pci_enable_msi(struct pci_dev* dev)
 	if (dev->no_msi)
 		return status;
 
+	if (dev->bus->bus_flags & PCI_BUS_FLAGS_NO_MSI)
+		return -EINVAL;
+
 	temp = dev->irq;
 
-	if ((status = msi_init()) < 0)
+	status = msi_init();
+	if (status < 0)
 		return status;
 
-   	if (!(pos = pci_find_capability(dev, PCI_CAP_ID_MSI)))
+	pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
+	if (!pos)
 		return -EINVAL;
 
 	pci_read_config_word(dev, msi_control_reg(pos), &control);
@@ -728,8 +738,8 @@ int pci_enable_msi(struct pci_dev* dev)
 		dev->irq = temp;
 	}
 	/* Check whether driver already requested for MSI-X vectors */
-   	if ((pos = pci_find_capability(dev, PCI_CAP_ID_MSIX)) > 0 &&
-		!msi_lookup_vector(dev, PCI_CAP_ID_MSIX)) {
+	pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
+	if (pos > 0 && !msi_lookup_vector(dev, PCI_CAP_ID_MSIX)) {
 			printk(KERN_INFO "PCI: %s: Can't enable MSI.  "
 			       "Device already has MSI-X vectors assigned\n",
 			       pci_name(dev));
@@ -755,7 +765,13 @@ void pci_disable_msi(struct pci_dev* dev)
 	u16 control;
 	unsigned long flags;
 
-   	if (!dev || !(pos = pci_find_capability(dev, PCI_CAP_ID_MSI)))
+	if (!pci_msi_enable)
+		return;
+	if (!dev)
+		return;
+
+	pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
+	if (!pos)
 		return;
 
 	pci_read_config_word(dev, msi_control_reg(pos), &control);
@@ -826,8 +842,10 @@ static int msi_free_vector(struct pci_dev* dev, int vector, int reassign)
 			 * Detect last MSI-X vector to be released.
 			 * Release the MSI-X memory-mapped table.
 			 */
+#if 0
 			int pos, nr_entries;
-			u32 phys_addr, table_offset;
+			unsigned long phys_addr;
+			u32 table_offset;
 			u16 control;
 			u8 bir;
 
@@ -838,9 +856,12 @@ static int msi_free_vector(struct pci_dev* dev, int vector, int reassign)
 			pci_read_config_dword(dev, msix_table_offset_reg(pos),
 				&table_offset);
 			bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);
-			phys_addr = pci_resource_start (dev, bir);
-			phys_addr += (u32)(table_offset &
-				~PCI_MSIX_FLAGS_BIRMASK);
+			table_offset &= ~PCI_MSIX_FLAGS_BIRMASK;
+			phys_addr = pci_resource_start(dev, bir) + table_offset;
+/*
+ * FIXME!  and what did you want to do with phys_addr?
+ */
+#endif
 			iounmap(base);
 		}
 	}
@@ -924,10 +945,12 @@ int pci_enable_msix(struct pci_dev* dev, struct msix_entry *entries, int nvec)
 	if (!pci_msi_enable || !dev || !entries)
  		return -EINVAL;
 
-	if ((status = msi_init()) < 0)
+	status = msi_init();
+	if (status < 0)
 		return status;
 
-   	if (!(pos = pci_find_capability(dev, PCI_CAP_ID_MSIX)))
+	pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
+	if (!pos)
  		return -EINVAL;
 
 	pci_read_config_word(dev, msi_control_reg(pos), &control);
@@ -1006,7 +1029,13 @@ void pci_disable_msix(struct pci_dev* dev)
 	int pos, temp;
 	u16 control;
 
-   	if (!dev || !(pos = pci_find_capability(dev, PCI_CAP_ID_MSIX)))
+	if (!pci_msi_enable)
+		return;
+	if (!dev)
+		return;
+
+	pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
+	if (!pos)
 		return;
 
 	pci_read_config_word(dev, msi_control_reg(pos), &control);
@@ -1066,8 +1095,8 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev)
  		return;
 
 	temp = dev->irq;		/* Save IOAPIC IRQ */
-   	if ((pos = pci_find_capability(dev, PCI_CAP_ID_MSI)) > 0 &&
-		!msi_lookup_vector(dev, PCI_CAP_ID_MSI)) {
+	pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
+	if (pos > 0 && !msi_lookup_vector(dev, PCI_CAP_ID_MSI)) {
 		spin_lock_irqsave(&msi_lock, flags);
 		state = msi_desc[dev->irq]->msi_attrib.state;
 		spin_unlock_irqrestore(&msi_lock, flags);
@@ -1080,8 +1109,8 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev)
 			msi_free_vector(dev, dev->irq, 0);
 		dev->irq = temp;		/* Restore IOAPIC IRQ */
 	}
-   	if ((pos = pci_find_capability(dev, PCI_CAP_ID_MSIX)) > 0 &&
-		!msi_lookup_vector(dev, PCI_CAP_ID_MSIX)) {
+	pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
+	if (pos > 0 && !msi_lookup_vector(dev, PCI_CAP_ID_MSIX)) {
 		int vector, head, tail = 0, warning = 0;
 		void __iomem *base = NULL;
 
@@ -1101,7 +1130,9 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev)
 		msi_free_vector(dev, vector, 0);
 		if (warning) {
 			/* Force to release the MSI-X memory-mapped table */
-			u32 phys_addr, table_offset;
+#if 0
+			unsigned long phys_addr;
+			u32 table_offset;
 			u16 control;
 			u8 bir;
 
@@ -1110,9 +1141,12 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev)
 			pci_read_config_dword(dev, msix_table_offset_reg(pos),
 				&table_offset);
 			bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);
-			phys_addr = pci_resource_start (dev, bir);
-			phys_addr += (u32)(table_offset &
-				~PCI_MSIX_FLAGS_BIRMASK);
+			table_offset &= ~PCI_MSIX_FLAGS_BIRMASK;
+			phys_addr = pci_resource_start(dev, bir) + table_offset;
+/*
+ * FIXME! and what did you want to do with phys_addr?
+ */
+#endif
 			iounmap(base);
 			printk(KERN_WARNING "PCI: %s: msi_remove_pci_irq_vectors() "
 			       "called without free_irq() on all MSI-X vectors\n",
@@ -1123,6 +1157,11 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev)
 	}
 }
 
+void pci_no_msi(void)
+{
+	pci_msi_enable = 0;
+}
+
 EXPORT_SYMBOL(pci_enable_msi);
 EXPORT_SYMBOL(pci_disable_msi);
 EXPORT_SYMBOL(pci_enable_msix);
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 0aa14c92b570..f22f69ac6445 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -53,11 +53,10 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
 	if (fields < 0)
 		return -EINVAL;
 
-	dynid = kmalloc(sizeof(*dynid), GFP_KERNEL);
+	dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
 	if (!dynid)
 		return -ENOMEM;
 
-	memset(dynid, 0, sizeof(*dynid));
 	INIT_LIST_HEAD(&dynid->node);
 	dynid->id.vendor = vendor;
 	dynid->id.device = device;
@@ -380,14 +379,6 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner)
 	/* initialize common driver fields */
 	drv->driver.name = drv->name;
 	drv->driver.bus = &pci_bus_type;
-	/* FIXME, once all of the existing PCI drivers have been fixed to set
-	 * the pci shutdown function, this test can go away. */
-	if (!drv->driver.shutdown)
-		drv->driver.shutdown = pci_device_shutdown;
-	else
-		printk(KERN_WARNING "Warning: PCI driver %s has a struct "
-			"device_driver shutdown method, please update!\n",
-			drv->name);
 	drv->driver.owner = owner;
 	drv->driver.kobj.ktype = &pci_driver_kobj_type;
 
@@ -514,6 +505,7 @@ struct bus_type pci_bus_type = {
 	.probe		= pci_device_probe,
 	.remove		= pci_device_remove,
 	.suspend	= pci_device_suspend,
+	.shutdown	= pci_device_shutdown,
 	.resume		= pci_device_resume,
 	.dev_attrs	= pci_dev_attrs,
 };
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 965a5934623a..56ac2bc003c7 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -501,9 +501,8 @@ int pci_create_sysfs_dev_files (struct pci_dev *pdev)
 	if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) {
 		struct bin_attribute *rom_attr;
 		
-		rom_attr = kmalloc(sizeof(*rom_attr), GFP_ATOMIC);
+		rom_attr = kzalloc(sizeof(*rom_attr), GFP_ATOMIC);
 		if (rom_attr) {
-			memset(rom_attr, 0x00, sizeof(*rom_attr));
 			pdev->rom_attr = rom_attr;
 			rom_attr->size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
 			rom_attr->attr.name = "rom";
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index d2d187916643..bea1ad1ad5ba 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -19,7 +19,6 @@
 #include <asm/dma.h>	/* isa_dma_bridge_buggy */
 #include "pci.h"
 
-#if 0
 
 /**
  * pci_bus_max_busnr - returns maximum PCI bus number of given bus' children
@@ -34,7 +33,7 @@ pci_bus_max_busnr(struct pci_bus* bus)
 	struct list_head *tmp;
 	unsigned char max, n;
 
-	max = bus->number;
+	max = bus->subordinate;
 	list_for_each(tmp, &bus->children) {
 		n = pci_bus_max_busnr(pci_bus_b(tmp));
 		if(n > max)
@@ -42,7 +41,9 @@ pci_bus_max_busnr(struct pci_bus* bus)
 	}
 	return max;
 }
+EXPORT_SYMBOL_GPL(pci_bus_max_busnr);
 
+#if 0
 /**
  * pci_max_busnr - returns maximum PCI bus number
  *
@@ -495,9 +496,8 @@ pci_enable_device_bars(struct pci_dev *dev, int bars)
 int
 pci_enable_device(struct pci_dev *dev)
 {
-	int err;
-
-	if ((err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1)))
+	int err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1);
+	if (err)
 		return err;
 	pci_fixup_device(pci_fixup_enable, dev);
 	dev->is_enabled = 1;
@@ -639,7 +639,7 @@ void pci_release_region(struct pci_dev *pdev, int bar)
  *	Returns 0 on success, or %EBUSY on error.  A warning
  *	message is also printed on failure.
  */
-int pci_request_region(struct pci_dev *pdev, int bar, char *res_name)
+int pci_request_region(struct pci_dev *pdev, int bar, const char *res_name)
 {
 	if (pci_resource_len(pdev, bar) == 0)
 		return 0;
@@ -697,7 +697,7 @@ void pci_release_regions(struct pci_dev *pdev)
  *	Returns 0 on success, or %EBUSY on error.  A warning
  *	message is also printed on failure.
  */
-int pci_request_regions(struct pci_dev *pdev, char *res_name)
+int pci_request_regions(struct pci_dev *pdev, const char *res_name)
 {
 	int i;
 	
@@ -900,8 +900,12 @@ static int __devinit pci_setup(char *str)
 		if (k)
 			*k++ = 0;
 		if (*str && (str = pcibios_setup(str)) && *str) {
-			/* PCI layer options should be handled here */
-			printk(KERN_ERR "PCI: Unknown option `%s'\n", str);
+			if (!strcmp(str, "nomsi")) {
+				pci_no_msi();
+			} else {
+				printk(KERN_ERR "PCI: Unknown option `%s'\n",
+						str);
+			}
 		}
 		str = k;
 	}
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index a6dfee2f6d2b..8f3fb47ea671 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -50,8 +50,10 @@ extern int pci_msi_quirk;
 
 #ifdef CONFIG_PCI_MSI
 void disable_msi_mode(struct pci_dev *dev, int pos, int type);
+void pci_no_msi(void);
 #else
 static inline void disable_msi_mode(struct pci_dev *dev, int pos, int type) { }
+static inline void pci_no_msi(void) { }
 #endif
 
 extern int pcie_mch_quirk;
diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
index a63bd8f72601..1d317d22ee89 100644
--- a/drivers/pci/pcie/portdrv.h
+++ b/drivers/pci/pcie/portdrv.h
@@ -29,7 +29,6 @@
 
 struct pcie_port_device_ext {
 	int interrupt_mode;	/* [0:INTx | 1:MSI | 2:MSI-X] */
-	unsigned int saved_msi_config_space[5];
 };
 
 extern struct bus_type pcie_port_bus_type;
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index e4e5f1e8d816..55c662267868 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -248,11 +248,10 @@ static struct pcie_device* alloc_pcie_device(struct pci_dev *parent,
 {
 	struct pcie_device *device;
 
-	device = kmalloc(sizeof(struct pcie_device), GFP_KERNEL);
+	device = kzalloc(sizeof(struct pcie_device), GFP_KERNEL);
 	if (!device)
 		return NULL;
 
-	memset(device, 0, sizeof(struct pcie_device));
 	pcie_device_init(parent, device, port_type, service_type, irq,irq_mode);
 	printk(KERN_DEBUG "Allocate Port Service[%s]\n", device->device.bus_id);
 	return device;
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index 02260141dc81..50bfc1b2f3bf 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -30,75 +30,16 @@ MODULE_LICENSE("GPL");
 /* global data */
 static const char device_name[] = "pcieport-driver";
 
-static void pci_save_msi_state(struct pci_dev *dev)
+static int pcie_portdrv_save_config(struct pci_dev *dev)
 {
-	struct pcie_port_device_ext *p_ext = pci_get_drvdata(dev);
-	int i = 0, pos;
-	u16 control;
-
-   	if ((pos = pci_find_capability(dev, PCI_CAP_ID_MSI)) <= 0)
-		return;
-
-	pci_read_config_dword(dev, pos, &p_ext->saved_msi_config_space[i++]);
-	control = p_ext->saved_msi_config_space[0] >> 16;
-	pci_read_config_dword(dev, pos + PCI_MSI_ADDRESS_LO,
-		&p_ext->saved_msi_config_space[i++]);
-	if (control & PCI_MSI_FLAGS_64BIT) {
-		pci_read_config_dword(dev, pos + PCI_MSI_ADDRESS_HI,
-			&p_ext->saved_msi_config_space[i++]);
-		pci_read_config_dword(dev, pos + PCI_MSI_DATA_64,
-			&p_ext->saved_msi_config_space[i++]);
-	} else
-		pci_read_config_dword(dev, pos + PCI_MSI_DATA_32,
-			&p_ext->saved_msi_config_space[i++]);
-	if (control & PCI_MSI_FLAGS_MASKBIT)
-		pci_read_config_dword(dev, pos + PCI_MSI_MASK_BIT,
-			&p_ext->saved_msi_config_space[i++]);
-}
-
-static void pci_restore_msi_state(struct pci_dev *dev)
-{
-	struct pcie_port_device_ext *p_ext = pci_get_drvdata(dev);
-	int i = 0, pos;
-	u16 control;
-
-   	if ((pos = pci_find_capability(dev, PCI_CAP_ID_MSI)) <= 0)
-		return;
-
-	control = p_ext->saved_msi_config_space[i++] >> 16;
-	pci_write_config_word(dev, pos + PCI_MSI_FLAGS, control);
-	pci_write_config_dword(dev, pos + PCI_MSI_ADDRESS_LO,
-		p_ext->saved_msi_config_space[i++]);
-	if (control & PCI_MSI_FLAGS_64BIT) {
-		pci_write_config_dword(dev, pos + PCI_MSI_ADDRESS_HI,
-			p_ext->saved_msi_config_space[i++]);
-		pci_write_config_dword(dev, pos + PCI_MSI_DATA_64,
-			p_ext->saved_msi_config_space[i++]);
-	} else
-		pci_write_config_dword(dev, pos + PCI_MSI_DATA_32,
-			p_ext->saved_msi_config_space[i++]);
-	if (control & PCI_MSI_FLAGS_MASKBIT)
-		pci_write_config_dword(dev, pos + PCI_MSI_MASK_BIT,
-			p_ext->saved_msi_config_space[i++]);
-}
-
-static void pcie_portdrv_save_config(struct pci_dev *dev)
-{
-	struct pcie_port_device_ext *p_ext = pci_get_drvdata(dev);
-
-	pci_save_state(dev);
-	if (p_ext->interrupt_mode == PCIE_PORT_MSI_MODE)
-		pci_save_msi_state(dev);
+	return pci_save_state(dev);
 }
 
 static int pcie_portdrv_restore_config(struct pci_dev *dev)
 {
-	struct pcie_port_device_ext *p_ext = pci_get_drvdata(dev);
 	int retval;
 
 	pci_restore_state(dev);
-	if (p_ext->interrupt_mode == PCIE_PORT_MSI_MODE)
-		pci_restore_msi_state(dev);
 	retval = pci_enable_device(dev);
 	if (retval)
 		return retval;
@@ -149,7 +90,8 @@ static int pcie_portdrv_suspend (struct pci_dev *dev, pm_message_t state)
 {
 	int ret = pcie_port_device_suspend(dev, state);
 
-	pcie_portdrv_save_config(dev);
+	if (!ret)
+		ret = pcie_portdrv_save_config(dev);
 	return ret;
 }
 
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index adfad4fd6a13..a10ed9dab2c2 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -33,10 +33,9 @@ LIST_HEAD(pci_devices);
  */
 static void pci_create_legacy_files(struct pci_bus *b)
 {
-	b->legacy_io = kmalloc(sizeof(struct bin_attribute) * 2,
+	b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2,
 			       GFP_ATOMIC);
 	if (b->legacy_io) {
-		memset(b->legacy_io, 0, sizeof(struct bin_attribute) * 2);
 		b->legacy_io->attr.name = "legacy_io";
 		b->legacy_io->size = 0xffff;
 		b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
@@ -320,9 +319,8 @@ static struct pci_bus * __devinit pci_alloc_bus(void)
 {
 	struct pci_bus *b;
 
-	b = kmalloc(sizeof(*b), GFP_KERNEL);
+	b = kzalloc(sizeof(*b), GFP_KERNEL);
 	if (b) {
-		memset(b, 0, sizeof(*b));
 		INIT_LIST_HEAD(&b->node);
 		INIT_LIST_HEAD(&b->children);
 		INIT_LIST_HEAD(&b->devices);
@@ -347,6 +345,7 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
 	child->parent = parent;
 	child->ops = parent->ops;
 	child->sysdata = parent->sysdata;
+	child->bus_flags = parent->bus_flags;
 	child->bridge = get_device(&bridge->dev);
 
 	child->class_dev.class = &pcibus_class;
@@ -456,7 +455,7 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max
 		 * pass and just note the configuration.
 		 */
 		if (pass)
-			return max;
+			goto out;
 		busnr = (buses >> 8) & 0xFF;
 
 		/*
@@ -466,12 +465,12 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max
 		if (pci_find_bus(pci_domain_nr(bus), busnr)) {
 			printk(KERN_INFO "PCI: Bus %04x:%02x already known\n",
 					pci_domain_nr(bus), busnr);
-			return max;
+			goto out;
 		}
 
 		child = pci_add_new_bus(bus, dev, busnr);
 		if (!child)
-			return max;
+			goto out;
 		child->primary = buses & 0xFF;
 		child->subordinate = (buses >> 16) & 0xFF;
 		child->bridge_ctl = bctl;
@@ -496,7 +495,7 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max
 				   bus ranges. */
 				pci_write_config_dword(dev, PCI_PRIMARY_BUS,
 						       buses & ~0xffffff);
-			return max;
+			goto out;
 		}
 
 		/* Clear errors */
@@ -505,7 +504,7 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max
 		/* Prevent assigning a bus number that already exists.
 		 * This can happen when a bridge is hot-plugged */
 		if (pci_find_bus(pci_domain_nr(bus), max+1))
-			return max;
+			goto out;
 		child = pci_add_new_bus(bus, dev, ++max);
 		buses = (buses & 0xff000000)
 		      | ((unsigned int)(child->primary)     <<  0)
@@ -537,6 +536,11 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max
 			pci_fixup_parent_subordinate_busnr(child, max);
 			/* Now we can scan all subordinate buses... */
 			max = pci_scan_child_bus(child);
+			/*
+			 * now fix it up again since we have found
+			 * the real value of max.
+			 */
+			pci_fixup_parent_subordinate_busnr(child, max);
 		} else {
 			/*
 			 * For CardBus bridges, we leave 4 bus numbers
@@ -576,8 +580,6 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max
 		pci_write_config_byte(dev, PCI_SUBORDINATE_BUS, max);
 	}
 
-	pci_write_config_word(dev, PCI_BRIDGE_CONTROL, bctl);
-
 	sprintf(child->name, (is_cardbus ? "PCI CardBus #%02x" : "PCI Bus #%02x"), child->number);
 
 	while (bus->parent) {
@@ -585,17 +587,22 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max
 		    (child->number > bus->subordinate) ||
 		    (child->number < bus->number) ||
 		    (child->subordinate < bus->number)) {
-			printk(KERN_WARNING "PCI: Bus #%02x (-#%02x) may be "
+			printk(KERN_WARNING "PCI: Bus #%02x (-#%02x) is "
 			       "hidden behind%s bridge #%02x (-#%02x)%s\n",
 			       child->number, child->subordinate,
 			       bus->self->transparent ? " transparent" : " ",
 			       bus->number, bus->subordinate,
 			       pcibios_assign_all_busses() ? " " :
 			       " (try 'pci=assign-busses')");
+			printk(KERN_WARNING "Please report the result to "
+			       "linux-kernel to fix this permanently\n");
 		}
 		bus = bus->parent;
 	}
 
+out:
+	pci_write_config_word(dev, PCI_BRIDGE_CONTROL, bctl);
+
 	return max;
 }
 
@@ -788,11 +795,10 @@ pci_scan_device(struct pci_bus *bus, int devfn)
 	if (pci_bus_read_config_byte(bus, devfn, PCI_HEADER_TYPE, &hdr_type))
 		return NULL;
 
-	dev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
+	dev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL);
 	if (!dev)
 		return NULL;
 
-	memset(dev, 0, sizeof(struct pci_dev));
 	dev->bus = bus;
 	dev->sysdata = bus->sysdata;
 	dev->dev.parent = bus->bridge;
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 92a885760832..54b2ebc9c91a 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -458,131 +458,6 @@ int pci_proc_detach_bus(struct pci_bus* bus)
 	return 0;
 }
 
-#ifdef CONFIG_PCI_LEGACY_PROC
-
-/*
- *  Backward compatible /proc/pci interface.
- */
-
-/*
- * Convert some of the configuration space registers of the device at
- * address (bus,devfn) into a string (possibly several lines each).
- * The configuration string is stored starting at buf[len].  If the
- * string would exceed the size of the buffer (SIZE), 0 is returned.
- */
-static int show_dev_config(struct seq_file *m, void *v)
-{
-	struct pci_dev *dev = v;
-	struct pci_dev *first_dev;
-	struct pci_driver *drv;
-	u32 class_rev;
-	unsigned char latency, min_gnt, max_lat;
-	int reg;
-
-	first_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
-	if (dev == first_dev)
-		seq_puts(m, "PCI devices found:\n");
-	pci_dev_put(first_dev);
-
-	drv = pci_dev_driver(dev);
-
-	pci_user_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
-	pci_user_read_config_byte (dev, PCI_LATENCY_TIMER, &latency);
-	pci_user_read_config_byte (dev, PCI_MIN_GNT, &min_gnt);
-	pci_user_read_config_byte (dev, PCI_MAX_LAT, &max_lat);
-	seq_printf(m, "  Bus %2d, device %3d, function %2d:\n",
-	       dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
-	seq_printf(m, "    Class %04x", class_rev >> 16);
-	seq_printf(m, ": PCI device %04x:%04x", dev->vendor, dev->device);
-	seq_printf(m, " (rev %d).\n", class_rev & 0xff);
-
-	if (dev->irq)
-		seq_printf(m, "      IRQ %d.\n", dev->irq);
-
-	if (latency || min_gnt || max_lat) {
-		seq_printf(m, "      Master Capable.  ");
-		if (latency)
-			seq_printf(m, "Latency=%d.  ", latency);
-		else
-			seq_puts(m, "No bursts.  ");
-		if (min_gnt)
-			seq_printf(m, "Min Gnt=%d.", min_gnt);
-		if (max_lat)
-			seq_printf(m, "Max Lat=%d.", max_lat);
-		seq_putc(m, '\n');
-	}
-
-	for (reg = 0; reg < 6; reg++) {
-		struct resource *res = dev->resource + reg;
-		unsigned long base, end, flags;
-
-		base = res->start;
-		end = res->end;
-		flags = res->flags;
-		if (!end)
-			continue;
-
-		if (flags & PCI_BASE_ADDRESS_SPACE_IO) {
-			seq_printf(m, "      I/O at 0x%lx [0x%lx].\n",
-				base, end);
-		} else {
-			const char *pref, *type = "unknown";
-
-			if (flags & PCI_BASE_ADDRESS_MEM_PREFETCH)
-				pref = "P";
-			else
-				pref = "Non-p";
-			switch (flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) {
-			      case PCI_BASE_ADDRESS_MEM_TYPE_32:
-				type = "32 bit"; break;
-			      case PCI_BASE_ADDRESS_MEM_TYPE_1M:
-				type = "20 bit"; break;
-			      case PCI_BASE_ADDRESS_MEM_TYPE_64:
-				type = "64 bit"; break;
-			}
-			seq_printf(m, "      %srefetchable %s memory at "
-				       "0x%lx [0x%lx].\n", pref, type,
-				       base,
-				       end);
-		}
-	}
-	return 0;
-}
-
-static struct seq_operations proc_pci_op = {
-	.start	= pci_seq_start,
-	.next	= pci_seq_next,
-	.stop	= pci_seq_stop,
-	.show	= show_dev_config
-};
-
-static int proc_pci_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &proc_pci_op);
-}
-static struct file_operations proc_pci_operations = {
-	.open		= proc_pci_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release,
-};
-
-static void legacy_proc_init(void)
-{
-	struct proc_dir_entry * entry = create_proc_entry("pci", 0, NULL);
-	if (entry)
-		entry->proc_fops = &proc_pci_operations;
-}
-
-#else
-
-static void legacy_proc_init(void)
-{
-
-}
-
-#endif /* CONFIG_PCI_LEGACY_PROC */
-
 static int proc_bus_pci_dev_open(struct inode *inode, struct file *file)
 {
 	return seq_open(file, &proc_bus_pci_devices_op);
@@ -606,7 +481,6 @@ static int __init pci_proc_init(void)
 	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
 		pci_proc_attach_device(dev);
 	}
-	legacy_proc_init();
 	return 0;
 }
 
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index dda6099903c1..4970f47be72c 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -575,8 +575,11 @@ static void __init quirk_amd_8131_ioapic(struct pci_dev *dev)
 { 
         unsigned char revid, tmp;
         
-	pci_msi_quirk = 1;
-	printk(KERN_WARNING "PCI: MSI quirk detected. pci_msi_quirk set.\n");
+	if (dev->subordinate) {
+		printk(KERN_WARNING "PCI: MSI quirk detected. "
+		       "PCI_BUS_FLAGS_NO_MSI set for subordinate bus.\n");
+		dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
+	}
 
         if (nr_ioapics == 0) 
                 return;
@@ -934,6 +937,12 @@ static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
 			case 0x12bd: /* HP D530 */
 				asus_hides_smbus = 1;
 			}
+		if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) {
+			switch (dev->subsystem_device) {
+			case 0x099c: /* HP Compaq nx6110 */
+				asus_hides_smbus = 1;
+			}
+		}
 	} else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_TOSHIBA)) {
 		if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
 			switch(dev->subsystem_device) {
@@ -1068,6 +1077,37 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_651,		quirk_sis_96x_
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_735,		quirk_sis_96x_compatible );
 
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_503,		quirk_sis_503 );
+/*
+ * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
+ * and MC97 modem controller are disabled when a second PCI soundcard is
+ * present. This patch, tweaking the VT8237 ISA bridge, enables them.
+ * -- bjd
+ */
+static void __init asus_hides_ac97_lpc(struct pci_dev *dev)
+{
+	u8 val;
+	int asus_hides_ac97 = 0;
+
+	if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
+		if (dev->device == PCI_DEVICE_ID_VIA_8237)
+			asus_hides_ac97 = 1;
+	}
+
+	if (!asus_hides_ac97)
+		return;
+
+	pci_read_config_byte(dev, 0x50, &val);
+	if (val & 0xc0) {
+		pci_write_config_byte(dev, 0x50, val & (~0xc0));
+		pci_read_config_byte(dev, 0x50, &val);
+		if (val & 0xc0)
+			printk(KERN_INFO "PCI: onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
+		else
+			printk(KERN_INFO "PCI: enabled onboard AC97/MC97 devices\n");
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc );
+
 
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_961,		quirk_sis_96x_smbus );
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_962,		quirk_sis_96x_smbus );
@@ -1242,6 +1282,33 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_1,	quirk_pc
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHV,	quirk_pcie_pxh);
 
 
+/*
+ * Fixup the cardbus bridges on the IBM Dock II docking station
+ */
+static void __devinit quirk_ibm_dock2_cardbus(struct pci_dev *dev)
+{
+	u32 val;
+
+	/*
+	 * tie the 2 interrupt pins to INTA, and configure the
+	 * multifunction routing register to handle this.
+	 */
+	if ((dev->subsystem_vendor == PCI_VENDOR_ID_IBM) &&
+		(dev->subsystem_device == 0x0148)) {
+		printk(KERN_INFO "PCI: Found IBM Dock II Cardbus Bridge "
+			"applying quirk\n");
+		pci_read_config_dword(dev, 0x8c, &val);
+		val = ((val & 0xffffff00) | 0x1002);
+		pci_write_config_dword(dev, 0x8c, val);
+		pci_read_config_dword(dev, 0x80, &val);
+		val = ((val & 0x00ffff00) | 0x2864c077);
+		pci_write_config_dword(dev, 0x80, val);
+	}
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420,
+				quirk_ibm_dock2_cardbus);
+
 static void __devinit quirk_netmos(struct pci_dev *dev)
 {
 	unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 05fa91a31c62..ce7dd6e7be60 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -246,9 +246,9 @@ pci_get_subsys(unsigned int vendor, unsigned int device,
 	}
 	dev = NULL;
 exit:
-	pci_dev_put(from);
 	dev = pci_dev_get(dev);
 	spin_unlock(&pci_bus_lock);
+	pci_dev_put(from);
 	return dev;
 }
 
@@ -339,9 +339,9 @@ struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from)
 	}
 	dev = NULL;
 exit:
-	pci_dev_put(from);
 	dev = pci_dev_get(dev);
 	spin_unlock(&pci_bus_lock);
+	pci_dev_put(from);
 	return dev;
 }