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

24 files changed, 523 insertions, 347 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 8e21f6ab89a..509a5b3ae99 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -794,12 +794,14 @@ static int enable_device(struct acpiphp_slot *slot)
 			if (PCI_SLOT(dev->devfn) != slot->device)
 				continue;
 			if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
-			    dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
+			    dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
 				max = pci_scan_bridge(bus, dev, max, pass);
+				if (pass && dev->subordinate)
+					pci_bus_size_bridges(dev->subordinate);
+			}
 		}
 	}
 
-	pci_bus_size_bridges(bus);
 	pci_bus_assign_resources(bus);
 	acpiphp_sanitize_bus(bus);
 	pci_enable_bridges(bus);
diff --git a/drivers/pci/hotplug/cpqphp.h b/drivers/pci/hotplug/cpqphp.h
index 092491e25ef..cb88404c89f 100644
--- a/drivers/pci/hotplug/cpqphp.h
+++ b/drivers/pci/hotplug/cpqphp.h
@@ -317,6 +317,7 @@ struct controller {
 	u16 vendor_id;
 	struct work_struct int_task_event;
 	wait_queue_head_t queue;	/* sleep & wake process */
+	struct dentry *dentry;		/* debugfs dentry */
 };
 
 struct irq_mapping {
@@ -399,8 +400,11 @@ struct resource_lists {
 #define msg_button_ignore	"PCI slot #%d - button press ignored.  (action in progress...)\n"
 
 
-/* sysfs functions for the hotplug controller info */
-extern void cpqhp_create_ctrl_files		(struct controller *ctrl);
+/* debugfs functions for the hotplug controller info */
+extern void cpqhp_initialize_debugfs		(void);
+extern void cpqhp_shutdown_debugfs		(void);
+extern void cpqhp_create_debugfs_files		(struct controller *ctrl);
+extern void cpqhp_remove_debugfs_files		(struct controller *ctrl);
 
 /* controller functions */
 extern void	cpqhp_pushbutton_thread		(unsigned long event_pointer);
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 9aed8efe6a1..b3659ffccac 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -327,7 +327,9 @@ static int ctrl_slot_setup(struct controller *ctrl,
 			void __iomem *smbios_start,
 			void __iomem *smbios_table)
 {
-	struct slot *new_slot;
+	struct slot *slot;
+	struct hotplug_slot *hotplug_slot;
+	struct hotplug_slot_info *hotplug_slot_info;
 	u8 number_of_slots;
 	u8 slot_device;
 	u8 slot_number;
@@ -345,93 +347,105 @@ static int ctrl_slot_setup(struct controller *ctrl,
 	slot_number = ctrl->first_slot;
 
 	while (number_of_slots) {
-		new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
-		if (!new_slot)
+		slot = kmalloc(sizeof(*slot), GFP_KERNEL);
+		if (!slot)
 			goto error;
 
-		memset(new_slot, 0, sizeof(struct slot));
-		new_slot->hotplug_slot = kmalloc(sizeof(*(new_slot->hotplug_slot)),
+		memset(slot, 0, sizeof(struct slot));
+		slot->hotplug_slot = kmalloc(sizeof(*(slot->hotplug_slot)),
 						GFP_KERNEL);
-		if (!new_slot->hotplug_slot)
+		if (!slot->hotplug_slot)
 			goto error_slot;
-		memset(new_slot->hotplug_slot, 0, sizeof(struct hotplug_slot));
+		hotplug_slot = slot->hotplug_slot;
+		memset(hotplug_slot, 0, sizeof(struct hotplug_slot));
 
-		new_slot->hotplug_slot->info =
-				kmalloc(sizeof(*(new_slot->hotplug_slot->info)),
+		hotplug_slot->info =
+				kmalloc(sizeof(*(hotplug_slot->info)),
 							GFP_KERNEL);
-		if (!new_slot->hotplug_slot->info)
+		if (!hotplug_slot->info)
 			goto error_hpslot;
-		memset(new_slot->hotplug_slot->info, 0,
+		hotplug_slot_info = hotplug_slot->info;
+		memset(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)
+		hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
+
+		if (!hotplug_slot->name)
 			goto error_info;
 
-		new_slot->ctrl = ctrl;
-		new_slot->bus = ctrl->bus;
-		new_slot->device = slot_device;
-		new_slot->number = slot_number;
-		dbg("slot->number = %d\n",new_slot->number);
+		slot->ctrl = ctrl;
+		slot->bus = ctrl->bus;
+		slot->device = slot_device;
+		slot->number = slot_number;
+		dbg("slot->number = %d\n", slot->number);
 
 		slot_entry = get_SMBIOS_entry(smbios_start, smbios_table, 9,
 					slot_entry);
 
-		while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) != new_slot->number)) {
+		while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) !=
+				slot->number)) {
 			slot_entry = get_SMBIOS_entry(smbios_start,
 						smbios_table, 9, slot_entry);
 		}
 
-		new_slot->p_sm_slot = slot_entry;
+		slot->p_sm_slot = slot_entry;
 
-		init_timer(&new_slot->task_event);
-		new_slot->task_event.expires = jiffies + 5 * HZ;
-		new_slot->task_event.function = cpqhp_pushbutton_thread;
+		init_timer(&slot->task_event);
+		slot->task_event.expires = jiffies + 5 * HZ;
+		slot->task_event.function = cpqhp_pushbutton_thread;
 
 		//FIXME: these capabilities aren't used but if they are
 		//       they need to be correctly implemented
-		new_slot->capabilities |= PCISLOT_REPLACE_SUPPORTED;
-		new_slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED;
+		slot->capabilities |= PCISLOT_REPLACE_SUPPORTED;
+		slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED;
 
-		if (is_slot64bit(new_slot))
-			new_slot->capabilities |= PCISLOT_64_BIT_SUPPORTED;
-		if (is_slot66mhz(new_slot))
-			new_slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED;
+		if (is_slot64bit(slot))
+			slot->capabilities |= PCISLOT_64_BIT_SUPPORTED;
+		if (is_slot66mhz(slot))
+			slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED;
 		if (ctrl->speed == PCI_SPEED_66MHz)
-			new_slot->capabilities |= PCISLOT_66_MHZ_OPERATION;
+			slot->capabilities |= PCISLOT_66_MHZ_OPERATION;
 
-		ctrl_slot = slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4);
+		ctrl_slot =
+			slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4);
 
 		// Check presence
-		new_slot->capabilities |= ((((~tempdword) >> 23) | ((~tempdword) >> 15)) >> ctrl_slot) & 0x02;
+		slot->capabilities |=
+			((((~tempdword) >> 23) |
+			 ((~tempdword) >> 15)) >> ctrl_slot) & 0x02;
 		// Check the switch state
-		new_slot->capabilities |= ((~tempdword & 0xFF) >> ctrl_slot) & 0x01;
+		slot->capabilities |=
+			((~tempdword & 0xFF) >> ctrl_slot) & 0x01;
 		// Check the slot enable
-		new_slot->capabilities |= ((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04;
+		slot->capabilities |=
+			((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04;
 
 		/* register this slot with the hotplug pci core */
-		new_slot->hotplug_slot->release = &release_slot;
-		new_slot->hotplug_slot->private = new_slot;
-		make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
-		new_slot->hotplug_slot->ops = &cpqphp_hotplug_slot_ops;
+		hotplug_slot->release = &release_slot;
+		hotplug_slot->private = slot;
+		make_slot_name(hotplug_slot->name, SLOT_NAME_SIZE, slot);
+		hotplug_slot->ops = &cpqphp_hotplug_slot_ops;
 		
-		new_slot->hotplug_slot->info->power_status = get_slot_enabled(ctrl, new_slot);
-		new_slot->hotplug_slot->info->attention_status = cpq_get_attention_status(ctrl, new_slot);
-		new_slot->hotplug_slot->info->latch_status = cpq_get_latch_status(ctrl, new_slot);
-		new_slot->hotplug_slot->info->adapter_status = get_presence_status(ctrl, new_slot);
+		hotplug_slot_info->power_status = get_slot_enabled(ctrl, slot);
+		hotplug_slot_info->attention_status =
+			cpq_get_attention_status(ctrl, slot);
+		hotplug_slot_info->latch_status =
+			cpq_get_latch_status(ctrl, slot);
+		hotplug_slot_info->adapter_status =
+			get_presence_status(ctrl, slot);
 		
-		dbg ("registering bus %d, dev %d, number %d, "
+		dbg("registering bus %d, dev %d, number %d, "
 				"ctrl->slot_device_offset %d, slot %d\n",
-				new_slot->bus, new_slot->device,
-				new_slot->number, ctrl->slot_device_offset,
+				slot->bus, slot->device,
+				slot->number, ctrl->slot_device_offset,
 				slot_number);
-		result = pci_hp_register (new_slot->hotplug_slot);
+		result = pci_hp_register(hotplug_slot);
 		if (result) {
-			err ("pci_hp_register failed with error %d\n", result);
+			err("pci_hp_register failed with error %d\n", result);
 			goto error_name;
 		}
 		
-		new_slot->next = ctrl->slot;
-		ctrl->slot = new_slot;
+		slot->next = ctrl->slot;
+		ctrl->slot = slot;
 
 		number_of_slots--;
 		slot_device++;
@@ -439,15 +453,14 @@ static int ctrl_slot_setup(struct controller *ctrl,
 	}
 
 	return 0;
-
 error_name:
-	kfree(new_slot->hotplug_slot->name);
+	kfree(hotplug_slot->name);
 error_info:
-	kfree(new_slot->hotplug_slot->info);
+	kfree(hotplug_slot_info);
 error_hpslot:
-	kfree(new_slot->hotplug_slot);
+	kfree(hotplug_slot);
 error_slot:
-	kfree(new_slot);
+	kfree(slot);
 error:
 	return result;
 }
@@ -466,6 +479,8 @@ static int ctrl_slot_cleanup (struct controller * ctrl)
 		old_slot = next_slot;
 	}
 
+	cpqhp_remove_debugfs_files(ctrl);
+
 	//Free IRQ associated with hot plug device
 	free_irq(ctrl->interrupt, ctrl);
 	//Unmap the memory
@@ -1262,7 +1277,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	// Done with exclusive hardware access
 	up(&ctrl->crit_sect);
 
-	cpqhp_create_ctrl_files(ctrl);
+	cpqhp_create_debugfs_files(ctrl);
 
 	return 0;
 
@@ -1502,6 +1517,7 @@ static int __init cpqhpc_init(void)
 	cpqhp_debug = debug;
 
 	info (DRIVER_DESC " version: " DRIVER_VERSION "\n");
+	cpqhp_initialize_debugfs();
 	result = pci_register_driver(&cpqhpc_driver);
 	dbg("pci_register_driver = %d\n", result);
 	return result;
@@ -1515,6 +1531,7 @@ static void __exit cpqhpc_cleanup(void)
 
 	dbg("pci_unregister_driver\n");
 	pci_unregister_driver(&cpqhpc_driver);
+	cpqhp_shutdown_debugfs();
 }
 
 
diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
index 10a5a7674a8..771ed34b181 100644
--- a/drivers/pci/hotplug/cpqphp_ctrl.c
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -2630,29 +2630,15 @@ static int configure_new_function(struct controller *ctrl, struct pci_func *func
 			hold_mem_node = NULL;
 		}
 
-		/* If we have prefetchable memory resources copy them and 
-		 * fill in the bridge's memory range registers.  Otherwise,
-		 * fill in the range registers with values that disable them. */
-		if (p_mem_node) {
-			memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource));
-			p_mem_node->next = NULL;
-
-			/* set Pre Mem base and Limit registers */
-			temp_word = p_mem_node->base >> 16;
-			rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
-
-			temp_word = (p_mem_node->base + p_mem_node->length - 1) >> 16;
-			rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
-		} else {
-			temp_word = 0xFFFF;
-			rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
+		memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource));
+		p_mem_node->next = NULL;
 
-			temp_word = 0x0000;
-			rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
+		/* set Pre Mem base and Limit registers */
+		temp_word = p_mem_node->base >> 16;
+		rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
 
-			kfree(hold_p_mem_node);
-			hold_p_mem_node = NULL;
-		}
+		temp_word = (p_mem_node->base + p_mem_node->length - 1) >> 16;
+		rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
 
 		/* Adjust this to compensate for extra adjustment in first loop */
 		irqs.barber_pole--;
diff --git a/drivers/pci/hotplug/cpqphp_sysfs.c b/drivers/pci/hotplug/cpqphp_sysfs.c
index 4c11048ad51..bbfeed767ff 100644
--- a/drivers/pci/hotplug/cpqphp_sysfs.c
+++ b/drivers/pci/hotplug/cpqphp_sysfs.c
@@ -33,22 +33,15 @@
 #include <linux/proc_fs.h>
 #include <linux/workqueue.h>
 #include <linux/pci.h>
+#include <linux/debugfs.h>
 #include "cpqphp.h"
 
-
-/* A few routines that create sysfs entries for the hot plug controller */
-
-static ssize_t show_ctrl (struct device *dev, struct device_attribute *attr, char *buf)
+static int show_ctrl (struct controller *ctrl, char *buf)
 {
-	struct pci_dev *pci_dev;
-	struct controller *ctrl;
-	char * out = buf;
+	char *out = buf;
 	int index;
 	struct pci_resource *res;
 
-	pci_dev = container_of (dev, struct pci_dev, dev);
-	ctrl = pci_get_drvdata(pci_dev);
-
 	out += sprintf(buf, "Free resources: memory\n");
 	index = 11;
 	res = ctrl->mem_head;
@@ -80,22 +73,16 @@ static ssize_t show_ctrl (struct device *dev, struct device_attribute *attr, cha
 
 	return out - buf;
 }
-static DEVICE_ATTR (ctrl, S_IRUGO, show_ctrl, NULL);
 
-static ssize_t show_dev (struct device *dev, struct device_attribute *attr, char *buf)
+static int show_dev (struct controller *ctrl, char *buf)
 {
-	struct pci_dev *pci_dev;
-	struct controller *ctrl;
 	char * out = buf;
 	int index;
 	struct pci_resource *res;
 	struct pci_func *new_slot;
 	struct slot *slot;
 
-	pci_dev = container_of (dev, struct pci_dev, dev);
-	ctrl = pci_get_drvdata(pci_dev);
-
-	slot=ctrl->slot;
+	slot = ctrl->slot;
 
 	while (slot) {
 		new_slot = cpqhp_slot_find(slot->bus, slot->device, 0);
@@ -134,10 +121,117 @@ static ssize_t show_dev (struct device *dev, struct device_attribute *attr, char
 
 	return out - buf;
 }
-static DEVICE_ATTR (dev, S_IRUGO, show_dev, NULL);
 
-void cpqhp_create_ctrl_files (struct controller *ctrl)
+static int spew_debug_info(struct controller *ctrl, char *data, int size)
 {
-	device_create_file (&ctrl->pci_dev->dev, &dev_attr_ctrl);
-	device_create_file (&ctrl->pci_dev->dev, &dev_attr_dev);
+	int used;
+
+	used = size - show_ctrl(ctrl, data);
+	used = (size - used) - show_dev(ctrl, &data[used]);
+	return used;
+}
+
+struct ctrl_dbg {
+	int size;
+	char *data;
+	struct controller *ctrl;
+};
+
+#define MAX_OUTPUT	(4*PAGE_SIZE)
+
+static int open(struct inode *inode, struct file *file)
+{
+	struct controller *ctrl = inode->u.generic_ip;
+	struct ctrl_dbg *dbg;
+	int retval = -ENOMEM;
+
+	lock_kernel();
+	dbg = kmalloc(sizeof(*dbg), GFP_KERNEL);
+	if (!dbg)
+		goto exit;
+	dbg->data = kmalloc(MAX_OUTPUT, GFP_KERNEL);
+	if (!dbg->data) {
+		kfree(dbg);
+		goto exit;
+	}
+	dbg->size = spew_debug_info(ctrl, dbg->data, MAX_OUTPUT);
+	file->private_data = dbg;
+	retval = 0;
+exit:
+	unlock_kernel();
+	return retval;
+}
+
+static loff_t lseek(struct file *file, loff_t off, int whence)
+{
+	struct ctrl_dbg *dbg;
+	loff_t new = -1;
+
+	lock_kernel();
+	dbg = file->private_data;
+
+	switch (whence) {
+	case 0:
+		new = off;
+		break;
+	case 1:
+		new = file->f_pos + off;
+		break;
+	}
+	if (new < 0 || new > dbg->size) {
+		unlock_kernel();
+		return -EINVAL;
+	}
+	unlock_kernel();
+	return (file->f_pos = new);
 }
+
+static ssize_t read(struct file *file, char __user *buf,
+		    size_t nbytes, loff_t *ppos)
+{
+	struct ctrl_dbg *dbg = file->private_data;
+	return simple_read_from_buffer(buf, nbytes, ppos, dbg->data, dbg->size);
+}
+
+static int release(struct inode *inode, struct file *file)
+{
+	struct ctrl_dbg *dbg = file->private_data;
+
+	kfree(dbg->data);
+	kfree(dbg);
+	return 0;
+}
+
+static struct file_operations debug_ops = {
+	.owner = THIS_MODULE,
+	.open = open,
+	.llseek = lseek,
+	.read = read,
+	.release = release,
+};
+
+static struct dentry *root;
+
+void cpqhp_initialize_debugfs(void)
+{
+	if (!root)
+		root = debugfs_create_dir("cpqhp", NULL);
+}
+
+void cpqhp_shutdown_debugfs(void)
+{
+	debugfs_remove(root);
+}
+
+void cpqhp_create_debugfs_files(struct controller *ctrl)
+{
+	ctrl->dentry = debugfs_create_file(ctrl->pci_dev->dev.bus_id, S_IRUGO, root, ctrl, &debug_ops);
+}
+
+void cpqhp_remove_debugfs_files(struct controller *ctrl)
+{
+	if (ctrl->dentry)
+		debugfs_remove(ctrl->dentry);
+	ctrl->dentry = NULL;
+}
+
diff --git a/drivers/pci/hotplug/ibmphp_pci.c b/drivers/pci/hotplug/ibmphp_pci.c
index b1ba429e0a2..155133fe5c1 100644
--- a/drivers/pci/hotplug/ibmphp_pci.c
+++ b/drivers/pci/hotplug/ibmphp_pci.c
@@ -969,7 +969,7 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
 			debug ("io 32\n");
 			need_io_upper = TRUE;
 		}
-		if ((io_base & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
+		if ((pfmem_base & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
 			debug ("pfmem 64\n");
 			need_pfmem_upper = TRUE;
 		}
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 8df70486034..4fb569018a2 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -103,7 +103,10 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 
 static int init_slots(struct controller *ctrl)
 {
-	struct slot *new_slot;
+	struct slot *slot;
+	struct hpc_ops *hpc_ops;
+	struct hotplug_slot *hotplug_slot;
+	struct hotplug_slot_info *hotplug_slot_info;
 	u8 number_of_slots;
 	u8 slot_device;
 	u32 slot_number;
@@ -114,59 +117,66 @@ static int init_slots(struct controller *ctrl)
 	slot_number = ctrl->first_slot;
 
 	while (number_of_slots) {
-		new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
-		if (!new_slot)
+		slot = kmalloc(sizeof(*slot), GFP_KERNEL);
+		if (!slot)
 			goto error;
 
-		memset(new_slot, 0, sizeof(struct slot));
-		new_slot->hotplug_slot =
-				kmalloc(sizeof(*(new_slot->hotplug_slot)),
+		memset(slot, 0, sizeof(struct slot));
+		slot->hotplug_slot =
+				kmalloc(sizeof(*(slot->hotplug_slot)),
 						GFP_KERNEL);
-		if (!new_slot->hotplug_slot)
+		if (!slot->hotplug_slot)
 			goto error_slot;
-		memset(new_slot->hotplug_slot, 0, sizeof(struct hotplug_slot));
+		hotplug_slot = slot->hotplug_slot;
+		memset(hotplug_slot, 0, sizeof(struct hotplug_slot));
 
-		new_slot->hotplug_slot->info =
-			kmalloc(sizeof(*(new_slot->hotplug_slot->info)),
+		hotplug_slot->info =
+			kmalloc(sizeof(*(hotplug_slot->info)),
 						GFP_KERNEL);
-		if (!new_slot->hotplug_slot->info)
+		if (!hotplug_slot->info)
 			goto error_hpslot;
-		memset(new_slot->hotplug_slot->info, 0,
+		hotplug_slot_info = hotplug_slot->info;
+		memset(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)
+		hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
+		if (!hotplug_slot->name)
 			goto error_info;
 
-		new_slot->ctrl = ctrl;
-		new_slot->bus = ctrl->slot_bus;
-		new_slot->device = slot_device;
-		new_slot->hpc_ops = ctrl->hpc_ops;
+		slot->ctrl = ctrl;
+		slot->bus = ctrl->slot_bus;
+		slot->device = slot_device;
+		slot->hpc_ops = hpc_ops = ctrl->hpc_ops;
 
-		new_slot->number = ctrl->first_slot;
-		new_slot->hp_slot = slot_device - ctrl->slot_device_offset;
+		slot->number = ctrl->first_slot;
+		slot->hp_slot = slot_device - ctrl->slot_device_offset;
 
 		/* 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 = &pciehp_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);
+		hotplug_slot->private = slot;
+		hotplug_slot->release = &release_slot;
+		make_slot_name(hotplug_slot->name, SLOT_NAME_SIZE, slot);
+		hotplug_slot->ops = &pciehp_hotplug_slot_ops;
+
+		hpc_ops->get_power_status(slot,
+			&(hotplug_slot_info->power_status));
+		hpc_ops->get_attention_status(slot,
+			&(hotplug_slot_info->attention_status));
+		hpc_ops->get_latch_status(slot,
+			&(hotplug_slot_info->latch_status));
+		hpc_ops->get_adapter_status(slot,
+			&(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);
+		result = pci_hp_register(hotplug_slot);
 		if (result) {
 			err ("pci_hp_register failed with error %d\n", result);
 			goto error_name;
 		}
 
-		new_slot->next = ctrl->slot;
-		ctrl->slot = new_slot;
+		slot->next = ctrl->slot;
+		ctrl->slot = slot;
 
 		number_of_slots--;
 		slot_device++;
@@ -176,13 +186,13 @@ static int init_slots(struct controller *ctrl)
 	return 0;
 
 error_name:
-	kfree(new_slot->hotplug_slot->name);
+	kfree(hotplug_slot->name);
 error_info:
-	kfree(new_slot->hotplug_slot->info);
+	kfree(hotplug_slot_info);
 error_hpslot:
-	kfree(new_slot->hotplug_slot);
+	kfree(hotplug_slot);
 error_slot:
-	kfree(new_slot);
+	kfree(slot);
 error:
 	return result;
 }
@@ -502,7 +512,7 @@ static void __exit unload_pciehpd(void)
 
 }
 
-int hpdriver_context = 0;
+static int hpdriver_context = 0;
 
 static void pciehp_remove (struct pcie_device *device)
 {
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index ac1e495c314..77e530321de 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -787,8 +787,13 @@ static int hpc_power_on_slot(struct slot * slot)
 
 	slot_cmd = (slot_ctrl & ~PWR_CTRL) | POWER_ON;
 
+	/* Enable detection that we turned off at slot power-off time */
 	if (!pciehp_poll_mode)
-		slot_cmd = slot_cmd | HP_INTR_ENABLE; 
+		slot_cmd = slot_cmd |
+		           PWR_FAULT_DETECT_ENABLE |
+		           MRL_DETECT_ENABLE |
+		           PRSN_DETECT_ENABLE |
+		           HP_INTR_ENABLE;
 
 	retval = pcie_write_cmd(slot, slot_cmd);
 
@@ -833,8 +838,18 @@ static int hpc_power_off_slot(struct slot * slot)
 
 	slot_cmd = (slot_ctrl & ~PWR_CTRL) | POWER_OFF;
 
+	/*
+	 * If we get MRL or presence detect interrupts now, the isr
+	 * will notice the sticky power-fault bit too and issue power
+	 * indicator change commands. This will lead to an endless loop
+	 * of command completions, since the power-fault bit remains on
+	 * till the slot is powered on again.
+	 */
 	if (!pciehp_poll_mode)
-		slot_cmd = slot_cmd | HP_INTR_ENABLE; 
+		slot_cmd = (slot_cmd &
+		            ~PWR_FAULT_DETECT_ENABLE &
+		            ~MRL_DETECT_ENABLE &
+		            ~PRSN_DETECT_ENABLE) | HP_INTR_ENABLE;
 
 	retval = pcie_write_cmd(slot, slot_cmd);
 
diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c
index 647673a7d22..4017fb03a0b 100644
--- a/drivers/pci/hotplug/pciehp_pci.c
+++ b/drivers/pci/hotplug/pciehp_pci.c
@@ -34,6 +34,31 @@
 #include "../pci.h"
 #include "pciehp.h"
 
+static int pciehp_add_bridge(struct pci_dev *dev)
+{
+	struct pci_bus *parent = dev->bus;
+	int pass, busnr, start = parent->secondary;
+	int end = parent->subordinate;
+
+	for (busnr = start; busnr <= end; busnr++) {
+		if (!pci_find_bus(pci_domain_nr(parent), busnr))
+			break;
+	}
+	if (busnr-- > end) {
+		err("No bus number available for hot-added bridge %s\n",
+				pci_name(dev));
+		return -1;
+	}
+	for (pass = 0; pass < 2; pass++)
+		busnr = pci_scan_bridge(parent, dev, busnr, pass);
+	if (!dev->subordinate)
+		return -1;
+	pci_bus_size_bridges(dev->subordinate);
+	pci_bus_assign_resources(parent);
+	pci_enable_bridges(parent);
+	pci_bus_add_devices(parent);
+	return 0;
+}
 
 int pciehp_configure_device(struct slot *p_slot)
 {
@@ -55,8 +80,8 @@ int pciehp_configure_device(struct slot *p_slot)
 	}
 
 	for (fn = 0; fn < 8; fn++) {
-		if (!(dev = pci_find_slot(p_slot->bus,
-					PCI_DEVFN(p_slot->device, fn))))
+		dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, fn));
+		if (!dev)
 			continue;
 		if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
 			err("Cannot hot-add display device %s\n",
@@ -65,27 +90,7 @@ int pciehp_configure_device(struct slot *p_slot)
 		}
 		if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
 				(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
-			/* Find an unused bus number for the new bridge */
-			struct pci_bus *child;
-			unsigned char busnr, start = parent->secondary;
-			unsigned char end = parent->subordinate;
-			for (busnr = start; busnr <= end; busnr++) {
-				if (!pci_find_bus(pci_domain_nr(parent),
-							busnr))
-					break;
-			}
-			if (busnr >= end) {
-				err("No free bus for hot-added bridge\n");
-				continue;
-			}
-			child = pci_add_new_bus(parent, dev, busnr);
-			if (!child) {
-				err("Cannot add new bus for %s\n",
-						pci_name(dev));
-				continue;
-			}
-			child->subordinate = pci_do_scan_bus(child);
-			pci_bus_size_bridges(child);
+			pciehp_add_bridge(dev);
 		}
 		/* TBD: program firmware provided _HPP values */
 		/* program_fw_provided_values(dev); */
@@ -93,7 +98,6 @@ int pciehp_configure_device(struct slot *p_slot)
 
 	pci_bus_assign_resources(parent);
 	pci_bus_add_devices(parent);
-	pci_enable_bridges(parent);
 	return 0;
 }
 
diff --git a/drivers/pci/hotplug/pciehprm_acpi.c b/drivers/pci/hotplug/pciehprm_acpi.c
index ae244e21862..2bdb30f68bf 100644
--- a/drivers/pci/hotplug/pciehprm_acpi.c
+++ b/drivers/pci/hotplug/pciehprm_acpi.c
@@ -174,7 +174,9 @@ 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.
@@ -190,17 +192,18 @@ int pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev)
 		 */
 		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 (!pdev->bus->parent->self)
+		if (!parent->self)
 			/* Parent must be a host bridge */
 			handle = acpi_get_pci_rootbridge_handle(
-					pci_domain_nr(pdev->bus->parent),
-					pdev->bus->parent->number);
+					pci_domain_nr(parent),
+					parent->number);
 		else
 			handle = DEVICE_ACPI_HANDLE(
-					&(pdev->bus->parent->self->dev));
-		pdev = pdev->bus->parent->self;
+					&(parent->self->dev));
+		pdev = parent->self;
 	}
 
 	while (handle) {
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
index cc03609f45d..7d93dbaf628 100644
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -112,28 +112,6 @@ static struct slot *find_slot(struct device_node *dn)
         return NULL;
 }
 
-static void rpadlpar_claim_one_bus(struct pci_bus *b)
-{
-	struct list_head *ld;
-	struct pci_bus *child_bus;
-
-	for (ld = b->devices.next; ld != &b->devices; ld = ld->next) {
-		struct pci_dev *dev = pci_dev_b(ld);
-		int i;
-
-		for (i = 0; i < PCI_NUM_RESOURCES; i++) {
-			struct resource *r = &dev->resource[i];
-
-			if (r->parent || !r->start || !r->flags)
-				continue;
-			rpaphp_claim_resource(dev, i);
-		}
-	}
-
-	list_for_each_entry(child_bus, &b->children, node)