Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 715 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
new file mode 100644
index 000000000000..c802f6270b89
--- /dev/null
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -0,0 +1,715 @@
+/*
+ * PCI HotPlug Controller Core
+ *
+ * Copyright (C) 2001-2002 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 2001-2002 IBM Corp.
+ *
+ * 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>
+ *
+ * Filesystem portion based on work done by Pat Mochel on ddfs/driverfs
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/pagemap.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/init.h>
+#include <linux/mount.h>
+#include <linux/namei.h>
+#include <linux/pci.h>
+#include <asm/uaccess.h>
+#include <linux/kobject.h>
+#include <linux/sysfs.h>
+#include "pci_hotplug.h"
+
+
+#define MY_NAME	"pci_hotplug"
+
+#define dbg(fmt, arg...) do { if (debug) printk(KERN_DEBUG "%s: %s: " fmt , MY_NAME , __FUNCTION__ , ## arg); } while (0)
+#define err(format, arg...) printk(KERN_ERR "%s: " format , MY_NAME , ## arg)
+#define info(format, arg...) printk(KERN_INFO "%s: " format , MY_NAME , ## arg)
+#define warn(format, arg...) printk(KERN_WARNING "%s: " format , MY_NAME , ## arg)
+
+
+/* local variables */
+static int debug;
+
+#define DRIVER_VERSION	"0.5"
+#define DRIVER_AUTHOR	"Greg Kroah-Hartman <greg@kroah.com>, Scott Murray <scottm@somanetworks.com>"
+#define DRIVER_DESC	"PCI Hot Plug PCI Core"
+
+
+//////////////////////////////////////////////////////////////////
+
+static LIST_HEAD(pci_hotplug_slot_list);
+
+struct subsystem pci_hotplug_slots_subsys;
+
+static ssize_t hotplug_slot_attr_show(struct kobject *kobj,
+		struct attribute *attr, char *buf)
+{
+	struct hotplug_slot *slot = to_hotplug_slot(kobj);
+	struct hotplug_slot_attribute *attribute = to_hotplug_attr(attr);
+	return attribute->show ? attribute->show(slot, buf) : 0;
+}
+
+static ssize_t hotplug_slot_attr_store(struct kobject *kobj,
+		struct attribute *attr, const char *buf, size_t len)
+{
+	struct hotplug_slot *slot = to_hotplug_slot(kobj);
+	struct hotplug_slot_attribute *attribute = to_hotplug_attr(attr);
+	return attribute->store ? attribute->store(slot, buf, len) : 0;
+}
+
+static struct sysfs_ops hotplug_slot_sysfs_ops = {
+	.show = hotplug_slot_attr_show,
+	.store = hotplug_slot_attr_store,
+};
+
+static void hotplug_slot_release(struct kobject *kobj)
+{
+	struct hotplug_slot *slot = to_hotplug_slot(kobj);
+	if (slot->release)
+		slot->release(slot);
+}
+
+static struct kobj_type hotplug_slot_ktype = {
+	.sysfs_ops = &hotplug_slot_sysfs_ops,
+	.release = &hotplug_slot_release,
+};
+
+decl_subsys_name(pci_hotplug_slots, slots, &hotplug_slot_ktype, NULL);
+
+/* these strings match up with the values in pci_bus_speed */
+static char *pci_bus_speed_strings[] = {
+	"33 MHz PCI",		/* 0x00 */
+	"66 MHz PCI",		/* 0x01 */
+	"66 MHz PCIX", 		/* 0x02 */
+	"100 MHz PCIX",		/* 0x03 */
+	"133 MHz PCIX",		/* 0x04 */
+	NULL,			/* 0x05 */
+	NULL,			/* 0x06 */
+	NULL,			/* 0x07 */
+	NULL,			/* 0x08 */
+	"66 MHz PCIX 266",	/* 0x09 */
+	"100 MHz PCIX 266",	/* 0x0a */
+	"133 MHz PCIX 266",	/* 0x0b */
+	NULL,			/* 0x0c */
+	NULL,			/* 0x0d */
+	NULL,			/* 0x0e */
+	NULL,			/* 0x0f */
+	NULL,			/* 0x10 */
+	"66 MHz PCIX 533",	/* 0x11 */
+	"100 MHz PCIX 533",	/* 0x12 */
+	"133 MHz PCIX 533",	/* 0x13 */
+	"25 GBps PCI-E",	/* 0x14 */
+};
+
+#ifdef CONFIG_HOTPLUG_PCI_CPCI
+extern int cpci_hotplug_init(int debug);
+extern void cpci_hotplug_exit(void);
+#else
+static inline int cpci_hotplug_init(int debug) { return 0; }
+static inline void cpci_hotplug_exit(void) { }
+#endif
+
+/* Weee, fun with macros... */
+#define GET_STATUS(name,type)	\
+static int get_##name (struct hotplug_slot *slot, type *value)		\
+{									\
+	struct hotplug_slot_ops *ops = slot->ops;			\
+	int retval = 0;							\
+	if (try_module_get(ops->owner)) {				\
+		if (ops->get_##name)					\
+			retval = ops->get_##name (slot, value);		\
+		else							\
+			*value = slot->info->name;			\
+		module_put(ops->owner);					\
+	}								\
+	return retval;							\
+}
+
+GET_STATUS(power_status, u8)
+GET_STATUS(attention_status, u8)
+GET_STATUS(latch_status, u8)
+GET_STATUS(adapter_status, u8)
+GET_STATUS(address, u32)
+GET_STATUS(max_bus_speed, enum pci_bus_speed)
+GET_STATUS(cur_bus_speed, enum pci_bus_speed)
+
+static ssize_t power_read_file (struct hotplug_slot *slot, char *buf)
+{
+	int retval;
+	u8 value;
+
+	retval = get_power_status (slot, &value);
+	if (retval)
+		goto exit;
+	retval = sprintf (buf, "%d\n", value);
+exit:
+	return retval;
+}
+
+static ssize_t power_write_file (struct hotplug_slot *slot, const char *buf,
+		size_t count)
+{
+	unsigned long lpower;
+	u8 power;
+	int retval = 0;
+
+	lpower = simple_strtoul (buf, NULL, 10);
+	power = (u8)(lpower & 0xff);
+	dbg ("power = %d\n", power);
+
+	if (!try_module_get(slot->ops->owner)) {
+		retval = -ENODEV;
+		goto exit;
+	}
+	switch (power) {
+		case 0:
+			if (slot->ops->disable_slot)
+				retval = slot->ops->disable_slot(slot);
+			break;
+
+		case 1:
+			if (slot->ops->enable_slot)
+				retval = slot->ops->enable_slot(slot);
+			break;
+
+		default:
+			err ("Illegal value specified for power\n");
+			retval = -EINVAL;
+	}
+	module_put(slot->ops->owner);
+
+exit:	
+	if (retval)
+		return retval;
+	return count;
+}
+
+static struct hotplug_slot_attribute hotplug_slot_attr_power = {
+	.attr = {.name = "power", .mode = S_IFREG | S_IRUGO | S_IWUSR},
+	.show = power_read_file,
+	.store = power_write_file
+};
+
+static ssize_t attention_read_file (struct hotplug_slot *slot, char *buf)
+{
+	int retval;
+	u8 value;
+
+	retval = get_attention_status (slot, &value);
+	if (retval)
+		goto exit;
+	retval = sprintf (buf, "%d\n", value);
+
+exit:
+	return retval;
+}
+
+static ssize_t attention_write_file (struct hotplug_slot *slot, const char *buf,
+		size_t count)
+{
+	unsigned long lattention;
+	u8 attention;
+	int retval = 0;
+
+	lattention = simple_strtoul (buf, NULL, 10);
+	attention = (u8)(lattention & 0xff);
+	dbg (" - attention = %d\n", attention);
+
+	if (!try_module_get(slot->ops->owner)) {
+		retval = -ENODEV;
+		goto exit;
+	}
+	if (slot->ops->set_attention_status)
+		retval = slot->ops->set_attention_status(slot, attention);
+	module_put(slot->ops->owner);
+
+exit:	
+	if (retval)
+		return retval;
+	return count;
+}
+
+static struct hotplug_slot_attribute hotplug_slot_attr_attention = {
+	.attr = {.name = "attention", .mode = S_IFREG | S_IRUGO | S_IWUSR},
+	.show = attention_read_file,
+	.store = attention_write_file
+};
+
+static ssize_t latch_read_file (struct hotplug_slot *slot, char *buf)
+{
+	int retval;
+	u8 value;
+
+	retval = get_latch_status (slot, &value);
+	if (retval)
+		goto exit;
+	retval = sprintf (buf, "%d\n", value);
+
+exit:
+	return retval;
+}
+
+static struct hotplug_slot_attribute hotplug_slot_attr_latch = {
+	.attr = {.name = "latch", .mode = S_IFREG | S_IRUGO},
+	.show = latch_read_file,
+};
+
+static ssize_t presence_read_file (struct hotplug_slot *slot, char *buf)
+{
+	int retval;
+	u8 value;
+
+	retval = get_adapter_status (slot, &value);
+	if (retval)
+		goto exit;
+	retval = sprintf (buf, "%d\n", value);
+
+exit:
+	return retval;
+}
+
+static struct hotplug_slot_attribute hotplug_slot_attr_presence = {
+	.attr = {.name = "adapter", .mode = S_IFREG | S_IRUGO},
+	.show = presence_read_file,
+};
+
+static ssize_t address_read_file (struct hotplug_slot *slot, char *buf)
+{
+	int retval;
+	u32 address;
+
+	retval = get_address (slot, &address);
+	if (retval)
+		goto exit;
+	retval = sprintf (buf, "%04x:%02x:%02x\n",
+			  (address >> 16) & 0xffff,
+			  (address >> 8) & 0xff,
+			  address & 0xff);
+
+exit:
+	return retval;
+}
+
+static struct hotplug_slot_attribute hotplug_slot_attr_address = {
+	.attr = {.name = "address", .mode = S_IFREG | S_IRUGO},
+	.show = address_read_file,
+};
+
+static char *unknown_speed = "Unknown bus speed";
+
+static ssize_t max_bus_speed_read_file (struct hotplug_slot *slot, char *buf)
+{
+	char *speed_string;
+	int retval;
+	enum pci_bus_speed value;
+	
+	retval = get_max_bus_speed (slot, &value);
+	if (retval)
+		goto exit;
+
+	if (value == PCI_SPEED_UNKNOWN)
+		speed_string = unknown_speed;
+	else
+		speed_string = pci_bus_speed_strings[value];
+	
+	retval = sprintf (buf, "%s\n", speed_string);
+
+exit:
+	return retval;
+}
+
+static struct hotplug_slot_attribute hotplug_slot_attr_max_bus_speed = {
+	.attr = {.name = "max_bus_speed", .mode = S_IFREG | S_IRUGO},
+	.show = max_bus_speed_read_file,
+};
+
+static ssize_t cur_bus_speed_read_file (struct hotplug_slot *slot, char *buf)
+{
+	char *speed_string;
+	int retval;
+	enum pci_bus_speed value;
+
+	retval = get_cur_bus_speed (slot, &value);
+	if (retval)
+		goto exit;
+
+	if (value == PCI_SPEED_UNKNOWN)
+		speed_string = unknown_speed;
+	else
+		speed_string = pci_bus_speed_strings[value];
+	
+	retval = sprintf (buf, "%s\n", speed_string);
+
+exit:
+	return retval;
+}
+
+static struct hotplug_slot_attribute hotplug_slot_attr_cur_bus_speed = {
+	.attr = {.name = "cur_bus_speed", .mode = S_IFREG | S_IRUGO},
+	.show = cur_bus_speed_read_file,
+};
+
+static ssize_t test_write_file (struct hotplug_slot *slot, const char *buf,
+		size_t count)
+{
+	unsigned long ltest;
+	u32 test;
+	int retval = 0;
+
+	ltest = simple_strtoul (buf, NULL, 10);
+	test = (u32)(ltest & 0xffffffff);
+	dbg ("test = %d\n", test);
+
+	if (!try_module_get(slot->ops->owner)) {
+		retval = -ENODEV;
+		goto exit;
+	}
+	if (slot->ops->hardware_test)
+		retval = slot->ops->hardware_test(slot, test);
+	module_put(slot->ops->owner);
+
+exit:	
+	if (retval)
+		return retval;
+	return count;
+}
+
+static struct hotplug_slot_attribute hotplug_slot_attr_test = {
+	.attr = {.name = "test", .mode = S_IFREG | S_IRUGO | S_IWUSR},
+	.store = test_write_file
+};
+
+static int has_power_file (struct hotplug_slot *slot)
+{
+	if ((!slot) || (!slot->ops))
+		return -ENODEV;
+	if ((slot->ops->enable_slot) ||
+	    (slot->ops->disable_slot) ||
+	    (slot->ops->get_power_status))
+		return 0;
+	return -ENOENT;
+}
+
+static int has_attention_file (struct hotplug_slot *slot)
+{
+	if ((!slot) || (!slot->ops))
+		return -ENODEV;
+	if ((slot->ops->set_attention_status) ||
+	    (slot->ops->get_attention_status))
+		return 0;
+	return -ENOENT;
+}
+
+static int has_latch_file (struct hotplug_slot *slot)
+{
+	if ((!slot) || (!slot->ops))
+		return -ENODEV;
+	if (slot->ops->get_latch_status)
+		return 0;
+	return -ENOENT;
+}
+
+static int has_adapter_file (struct hotplug_slot *slot)
+{
+	if ((!slot) || (!slot->ops))
+		return -ENODEV;
+	if (slot->ops->get_adapter_status)
+		return 0;
+	return -ENOENT;
+}
+
+static int has_address_file (struct hotplug_slot *slot)
+{
+	if ((!slot) || (!slot->ops))
+		return -ENODEV;
+	if (slot->ops->get_address)
+		return 0;
+	return -ENOENT;
+}
+
+static int has_max_bus_speed_file (struct hotplug_slot *slot)
+{
+	if ((!slot) || (!slot->ops))
+		return -ENODEV;
+	if (slot->ops->get_max_bus_speed)
+		return 0;
+	return -ENOENT;
+}
+
+static int has_cur_bus_speed_file (struct hotplug_slot *slot)
+{
+	if ((!slot) || (!slot->ops))
+		return -ENODEV;
+	if (slot->ops->get_cur_bus_speed)
+		return 0;
+	return -ENOENT;
+}
+
+static int has_test_file (struct hotplug_slot *slot)
+{
+	if ((!slot) || (!slot->ops))
+		return -ENODEV;
+	if (slot->ops->hardware_test)
+		return 0;
+	return -ENOENT;
+}
+
+static int fs_add_slot (struct hotplug_slot *slot)
+{
+	if (has_power_file(slot) == 0)
+		sysfs_create_file(&slot->kobj, &hotplug_slot_attr_power.attr);
+
+	if (has_attention_file(slot) == 0)
+		sysfs_create_file(&slot->kobj, &hotplug_slot_attr_attention.attr);
+
+	if (has_latch_file(slot) == 0)
+		sysfs_create_file(&slot->kobj, &hotplug_slot_attr_latch.attr);
+
+	if (has_adapter_file(slot) == 0)
+		sysfs_create_file(&slot->kobj, &hotplug_slot_attr_presence.attr);
+
+	if (has_address_file(slot) == 0)
+		sysfs_create_file(&slot->kobj, &hotplug_slot_attr_address.attr);
+
+	if (has_max_bus_speed_file(slot) == 0)
+		sysfs_create_file(&slot->kobj, &hotplug_slot_attr_max_bus_speed.attr);
+
+	if (has_cur_bus_speed_file(slot) == 0)
+		sysfs_create_file(&slot->kobj, &hotplug_slot_attr_cur_bus_speed.attr);
+
+	if (has_test_file(slot) == 0)
+		sysfs_create_file(&slot->kobj, &hotplug_slot_attr_test.attr);
+
+	return 0;
+}
+
+static void fs_remove_slot (struct hotplug_slot *slot)
+{
+	if (has_power_file(slot) == 0)
+		sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_power.attr);
+
+	if (has_attention_file(slot) == 0)
+		sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_attention.attr);
+
+	if (has_latch_file(slot) == 0)
+		sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_latch.attr);
+
+	if (has_adapter_file(slot) == 0)
+		sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_presence.attr);
+
+	if (has_address_file(slot) == 0)
+		sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_address.attr);
+
+	if (has_max_bus_speed_file(slot) == 0)
+		sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_max_bus_speed.attr);
+
+	if (has_cur_bus_speed_file(slot) == 0)
+		sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_cur_bus_speed.attr);
+
+	if (has_test_file(slot) == 0)
+		sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_test.attr);
+}
+
+static struct hotplug_slot *get_slot_from_name (const char *name)
+{
+	struct hotplug_slot *slot;
+	struct list_head *tmp;
+
+	list_for_each (tmp, &pci_hotplug_slot_list) {
+		slot = list_entry (tmp, struct hotplug_slot, slot_list);
+		if (strcmp(slot->name, name) == 0)
+			return slot;
+	}
+	return NULL;
+}
+
+/**
+ * pci_hp_register - register a hotplug_slot with the PCI hotplug subsystem
+ * @slot: pointer to the &struct hotplug_slot to register
+ *
+ * Registers a hotplug slot with the pci hotplug subsystem, which will allow
+ * userspace interaction to the slot.
+ *
+ * Returns 0 if successful, anything else for an error.
+ */
+int pci_hp_register (struct hotplug_slot *slot)
+{
+	int result;
+
+	if (slot == NULL)
+		return -ENODEV;
+	if ((slot->info == NULL) || (slot->ops == NULL))
+		return -EINVAL;
+	if (slot->release == NULL) {
+		dbg("Why are you trying to register a hotplug slot"
+		    "without a proper release function?\n");
+		return -EINVAL;
+	}
+
+	kobject_set_name(&slot->kobj, "%s", slot->name);
+	kobj_set_kset_s(slot, pci_hotplug_slots_subsys);
+
+	/* this can fail if we have already registered a slot with the same name */
+	if (kobject_register(&slot->kobj)) {
+		err("Unable to register kobject");
+		return -EINVAL;
+	}
+		
+	list_add (&slot->slot_list, &pci_hotplug_slot_list);
+
+	result = fs_add_slot (slot);
+	dbg ("Added slot %s to the list\n", slot->name);
+	return result;
+}
+
+/**
+ * pci_hp_deregister - deregister a hotplug_slot with the PCI hotplug subsystem
+ * @slot: pointer to the &struct hotplug_slot to deregister
+ *
+ * The @slot must have been registered with the pci hotplug subsystem
+ * previously with a call to pci_hp_register().
+ *
+ * Returns 0 if successful, anything else for an error.
+ */
+int pci_hp_deregister (struct hotplug_slot *slot)
+{
+	struct hotplug_slot *temp;
+
+	if (slot == NULL)
+		return -ENODEV;
+
+	temp = get_slot_from_name (slot->name);
+	if (temp != slot) {
+		return -ENODEV;
+	}
+	list_del (&slot->slot_list);
+
+	fs_remove_slot (slot);
+	dbg ("Removed slot %s from the list\n", slot->name);
+	kobject_unregister(&slot->kobj);
+	return 0;
+}
+
+/**
+ * pci_hp_change_slot_info - changes the slot's information structure in the core
+ * @slot: pointer to the slot whose info has changed
+ * @info: pointer to the info copy into the slot's info structure
+ *
+ * @slot must have been registered with the pci 
+ * hotplug subsystem previously with a call to pci_hp_register().
+ *
+ * Returns 0 if successful, anything else for an error.
+ */
+int pci_hp_change_slot_info (struct hotplug_slot *slot, struct hotplug_slot_info *info)
+{
+	if ((slot == NULL) || (info == NULL))
+		return -ENODEV;
+
+	/*
+	* check all fields in the info structure, and update timestamps
+	* for the files referring to the fields that have now changed.
+	*/
+	if ((has_power_file(slot) == 0) &&
+	    (slot->info->power_status != info->power_status))
+		sysfs_update_file(&slot->kobj, &hotplug_slot_attr_power.attr);
+
+	if ((has_attention_file(slot) == 0) &&
+	    (slot->info->attention_status != info->attention_status))
+		sysfs_update_file(&slot->kobj, &hotplug_slot_attr_attention.attr);
+
+	if ((has_latch_file(slot) == 0) &&
+	    (slot->info->latch_status != info->latch_status))
+		sysfs_update_file(&slot->kobj, &hotplug_slot_attr_latch.attr);
+
+	if ((has_adapter_file(slot) == 0) &&
+	    (slot->info->adapter_status != info->adapter_status))
+		sysfs_update_file(&slot->kobj, &hotplug_slot_attr_presence.attr);
+
+	if ((has_address_file(slot) == 0) &&
+	    (slot->info->address != info->address))
+		sysfs_update_file(&slot->kobj, &hotplug_slot_attr_address.attr);
+
+	if ((has_max_bus_speed_file(slot) == 0) &&
+	    (slot->info->max_bus_speed != info->max_bus_speed))
+		sysfs_update_file(&slot->kobj, &hotplug_slot_attr_max_bus_speed.attr);
+
+	if ((has_cur_bus_speed_file(slot) == 0) &&
+	    (slot->info->cur_bus_speed != info->cur_bus_speed))
+		sysfs_update_file(&slot->kobj, &hotplug_slot_attr_cur_bus_speed.attr);
+
+	memcpy (slot->info, info, sizeof (struct hotplug_slot_info));
+
+	return 0;
+}
+
+static int __init pci_hotplug_init (void)
+{
+	int result;
+
+	kset_set_kset_s(&pci_hotplug_slots_subsys, pci_bus_type.subsys);
+	result = subsystem_register(&pci_hotplug_slots_subsys);
+	if (result) {
+		err("Register subsys with error %d\n", result);
+		goto exit;
+	}
+	result = cpci_hotplug_init(debug);
+	if (result) {
+		err ("cpci_hotplug_init with error %d\n", result);
+		goto err_subsys;
+	}
+
+	info (DRIVER_DESC " version: " DRIVER_VERSION "\n");
+	goto exit;
+	
+err_subsys:
+	subsystem_unregister(&pci_hotplug_slots_subsys);
+exit:
+	return result;
+}
+
+static void __exit pci_hotplug_exit (void)
+{
+	cpci_hotplug_exit();
+	subsystem_unregister(&pci_hotplug_slots_subsys);
+}
+
+module_init(pci_hotplug_init);
+module_exit(pci_hotplug_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+module_param(debug, bool, 0644);
+MODULE_PARM_DESC(debug, "Debugging mode enabled or not");
+
+EXPORT_SYMBOL_GPL(pci_hotplug_slots_subsys);
+EXPORT_SYMBOL_GPL(pci_hp_register);
+EXPORT_SYMBOL_GPL(pci_hp_deregister);
+EXPORT_SYMBOL_GPL(pci_hp_change_slot_info);