* 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.
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/pci_hotplug.h>
#include <linux/proc_fs.h>
+#include <linux/slab.h>
#include <linux/types.h>
+#include <linux/mutex.h>
#include <asm/sn/addrs.h>
+#include <asm/sn/geo.h>
#include <asm/sn/l1.h>
#include <asm/sn/module.h>
#include <asm/sn/pcibr_provider.h>
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
+#include <asm/sn/sn_feature_sets.h>
#include <asm/sn/sn_sal.h>
#include <asm/sn/types.h>
+#include <linux/acpi.h>
+#include <asm/sn/acpi.h>
#include "../pci.h"
-#include "pci_hotplug.h"
MODULE_LICENSE("GPL");
MODULE_AUTHOR("SGI (prarit@sgi.com, dickie@sgi.com, habeck@sgi.com)");
MODULE_DESCRIPTION("SGI Altix Hot Plug PCI Controller Driver");
-#define PCIIO_ASIC_TYPE_TIOCA 4
+
+/* SAL call error codes. Keep in sync with prom header io/include/pcibr.h */
#define PCI_SLOT_ALREADY_UP 2 /* slot already up */
#define PCI_SLOT_ALREADY_DOWN 3 /* slot already down */
#define PCI_L1_ERR 7 /* L1 console command error */
#define PCI_EMPTY_33MHZ 15 /* empty 33 MHz bus */
+
+
+#define PCIIO_ASIC_TYPE_TIOCA 4
#define PCI_L1_QSIZE 128 /* our L1 message buffer size */
#define SN_MAX_HP_SLOTS 32 /* max hotplug slots */
-#define SGI_HOTPLUG_PROM_REV 0x0430 /* Min. required PROM version */
#define SN_SLOT_NAME_SIZE 33 /* size of name string */
/* internal list head */
static inline int get_power_status(struct hotplug_slot *slot, u8 *value);
static struct hotplug_slot_ops sn_hotplug_slot_ops = {
- .owner = THIS_MODULE,
.enable_slot = enable_slot,
.disable_slot = disable_slot,
.get_power_status = get_power_status,
};
-static DECLARE_MUTEX(sn_hotplug_sem);
+static DEFINE_MUTEX(sn_hotplug_mutex);
-static ssize_t path_show (struct hotplug_slot *bss_hotplug_slot,
- char *buf)
+static ssize_t path_show(struct pci_slot *pci_slot, char *buf)
{
int retval = -ENOENT;
- struct slot *slot = bss_hotplug_slot->private;
+ struct slot *slot = pci_slot->hotplug->private;
if (!slot)
return retval;
return retval;
}
-static struct hotplug_slot_attribute sn_slot_path_attr = __ATTR_RO(path);
+static struct pci_slot_attribute sn_slot_path_attr = __ATTR_RO(path);
static int sn_pci_slot_valid(struct pci_bus *pci_bus, int device)
{
struct pcibus_info *pcibus_info;
- int bricktype;
- int bus_num;
+ u16 busnum, segment, ioboard_type;
pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
if (!(pcibus_info->pbi_valid_devices & (1 << device)))
return -EPERM;
- bricktype = MODULE_GET_BTYPE(pcibus_info->pbi_moduleid);
- bus_num = pcibus_info->pbi_buscommon.bs_persist_busnum & 0xf;
+ ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
+ busnum = pcibus_info->pbi_buscommon.bs_persist_busnum;
+ segment = pci_domain_nr(pci_bus) & 0xf;
/* Do not allow hotplug operations on base I/O cards */
- if ((bricktype == L1_BRICKTYPE_IX || bricktype == L1_BRICKTYPE_IA) &&
- (bus_num == 1 && device != 1))
+ if ((ioboard_type == L1_BRICKTYPE_IX ||
+ ioboard_type == L1_BRICKTYPE_IA) &&
+ (segment == 1 && busnum == 0 && device != 1))
return -EPERM;
return 1;
static int sn_pci_bus_valid(struct pci_bus *pci_bus)
{
struct pcibus_info *pcibus_info;
- int asic_type;
- int bricktype;
-
- pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
+ u32 asic_type;
+ u16 ioboard_type;
/* Don't register slots hanging off the TIOCA bus */
+ pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
asic_type = pcibus_info->pbi_buscommon.bs_asic_type;
if (asic_type == PCIIO_ASIC_TYPE_TIOCA)
return -EPERM;
/* Only register slots in I/O Bricks that support hotplug */
- bricktype = MODULE_GET_BTYPE(pcibus_info->pbi_moduleid);
- switch (bricktype) {
+ ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
+ switch (ioboard_type) {
case L1_BRICKTYPE_IX:
case L1_BRICKTYPE_PX:
case L1_BRICKTYPE_IA:
case L1_BRICKTYPE_PA:
+ case L1_BOARDTYPE_PCIX3SLOT:
return 1;
break;
default:
}
static int sn_hp_slot_private_alloc(struct hotplug_slot *bss_hotplug_slot,
- struct pci_bus *pci_bus, int device)
+ struct pci_bus *pci_bus, int device,
+ char *name)
{
struct pcibus_info *pcibus_info;
struct slot *slot;
return -ENOMEM;
bss_hotplug_slot->private = slot;
- bss_hotplug_slot->name = kmalloc(SN_SLOT_NAME_SIZE, GFP_KERNEL);
- if (!bss_hotplug_slot->name) {
- kfree(bss_hotplug_slot->private);
- return -ENOMEM;
- }
-
slot->device_num = device;
slot->pci_bus = pci_bus;
- sprintf(bss_hotplug_slot->name, "%04x:%02x:%02x",
+ sprintf(name, "%04x:%02x:%02x",
pci_domain_nr(pci_bus),
- ((int)pcibus_info->pbi_buscommon.bs_persist_busnum) & 0xf,
+ ((u16)pcibus_info->pbi_buscommon.bs_persist_busnum),
device + 1);
- sprintf(slot->physical_path, "module_%c%c%c%c%.2d",
- '0'+RACK_GET_CLASS(MODULE_GET_RACK(pcibus_info->pbi_moduleid)),
- '0'+RACK_GET_GROUP(MODULE_GET_RACK(pcibus_info->pbi_moduleid)),
- '0'+RACK_GET_NUM(MODULE_GET_RACK(pcibus_info->pbi_moduleid)),
- MODULE_GET_BTCHAR(pcibus_info->pbi_moduleid),
- MODULE_GET_BPOS(pcibus_info->pbi_moduleid));
+
+ sn_generate_path(pci_bus, slot->physical_path);
+
slot->hotplug_slot = bss_hotplug_slot;
list_add(&slot->hp_list, &sn_hp_list);
static struct hotplug_slot * sn_hp_destroy(void)
{
struct slot *slot;
+ struct pci_slot *pci_slot;
struct hotplug_slot *bss_hotplug_slot = NULL;
list_for_each_entry(slot, &sn_hp_list, hp_list) {
bss_hotplug_slot = slot->hotplug_slot;
+ pci_slot = bss_hotplug_slot->pci_slot;
list_del(&((struct slot *)bss_hotplug_slot->private)->
hp_list);
- sysfs_remove_file(&bss_hotplug_slot->kobj,
+ sysfs_remove_file(&pci_slot->kobj,
&sn_slot_path_attr.attr);
break;
}
return bss_hotplug_slot;
}
-static void sn_bus_alloc_data(struct pci_dev *dev)
-{
- struct pci_bus *subordinate_bus;
- struct pci_dev *child;
-
- sn_pci_fixup_slot(dev);
-
- /* Recursively sets up the sn_irq_info structs */
- if (dev->subordinate) {
- subordinate_bus = dev->subordinate;
- list_for_each_entry(child, &subordinate_bus->devices, bus_list)
- sn_bus_alloc_data(child);
- }
-}
-
static void sn_bus_free_data(struct pci_dev *dev)
{
struct pci_bus *subordinate_bus;
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);
}
static int sn_slot_enable(struct hotplug_slot *bss_hotplug_slot,
- int device_num)
+ int device_num, char **ssdt)
{
struct slot *slot = bss_hotplug_slot->private;
struct pcibus_info *pcibus_info;
* Power-on and initialize the slot in the SN
* PCI infrastructure.
*/
- rc = sal_pcibr_slot_enable(pcibus_info, device_num, &resp);
+ rc = sal_pcibr_slot_enable(pcibus_info, device_num, &resp, ssdt);
+
if (rc == PCI_SLOT_ALREADY_UP) {
- dev_dbg(slot->pci_bus->self, "is already active\n");
+ dev_dbg(&slot->pci_bus->self->dev, "is already active\n");
return 1; /* return 1 to user */
}
if (rc == PCI_L1_ERR) {
- dev_dbg(slot->pci_bus->self,
+ dev_dbg(&slot->pci_bus->self->dev,
"L1 failure %d with message: %s",
resp.resp_sub_errno, resp.resp_l1_msg);
return -EPERM;
}
if (rc) {
- dev_dbg(slot->pci_bus->self,
+ dev_dbg(&slot->pci_bus->self->dev,
"insert failed with error %d sub-error %d\n",
rc, resp.resp_sub_errno);
return -EIO;
if ((action == PCI_REQ_SLOT_ELIGIBLE) &&
(rc == PCI_SLOT_ALREADY_DOWN)) {
- dev_dbg(slot->pci_bus->self, "Slot %s already inactive\n");
+ dev_dbg(&slot->pci_bus->self->dev, "Slot %s already inactive\n", slot->physical_path);
return 1; /* return 1 to user */
}
if ((action == PCI_REQ_SLOT_ELIGIBLE) && (rc == PCI_EMPTY_33MHZ)) {
- dev_dbg(slot->pci_bus->self,
+ dev_dbg(&slot->pci_bus->self->dev,
"Cannot remove last 33MHz card\n");
return -EPERM;
}
if ((action == PCI_REQ_SLOT_ELIGIBLE) && (rc == PCI_L1_ERR)) {
- dev_dbg(slot->pci_bus->self,
+ dev_dbg(&slot->pci_bus->self->dev,
"L1 failure %d with message \n%s\n",
resp.resp_sub_errno, resp.resp_l1_msg);
return -EPERM;
}
if ((action == PCI_REQ_SLOT_ELIGIBLE) && rc) {
- dev_dbg(slot->pci_bus->self,
+ dev_dbg(&slot->pci_bus->self->dev,
"remove failed with error %d sub-error %d\n",
rc, resp.resp_sub_errno);
return -EIO;
if ((action == PCI_REQ_SLOT_DISABLE) && !rc) {
pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
pcibus_info->pbi_enabled_devices &= ~(1 << device_num);
- dev_dbg(slot->pci_bus->self, "remove successful\n");
+ dev_dbg(&slot->pci_bus->self->dev, "remove successful\n");
return 0;
}
if ((action == PCI_REQ_SLOT_DISABLE) && rc) {
- dev_dbg(slot->pci_bus->self,"remove failed rc = %d\n", rc);
+ dev_dbg(&slot->pci_bus->self->dev,"remove failed rc = %d\n", rc);
}
return rc;
}
+/*
+ * Power up and configure the slot via a SAL call to PROM.
+ * Scan slot (and any children), do any platform specific fixup,
+ * and find device driver.
+ */
static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
{
struct slot *slot = bss_hotplug_slot->private;
int func, num_funcs;
int new_ppb = 0;
int rc;
+ char *ssdt = NULL;
+ void pcibios_fixup_device_resources(struct pci_dev *);
/* Serialize the Linux PCI infrastructure */
- down(&sn_hotplug_sem);
+ mutex_lock(&sn_hotplug_mutex);
/*
* Power-on and initialize the slot in the SN
- * PCI infrastructure.
+ * PCI infrastructure. Also, retrieve the ACPI SSDT
+ * table for the slot (if ACPI capable PROM).
*/
- rc = sn_slot_enable(bss_hotplug_slot, slot->device_num);
+ rc = sn_slot_enable(bss_hotplug_slot, slot->device_num, &ssdt);
if (rc) {
- up(&sn_hotplug_sem);
+ mutex_unlock(&sn_hotplug_mutex);
return rc;
}
+ if (ssdt)
+ ssdt = __va(ssdt);
+ /* Add the new SSDT for the slot to the ACPI namespace */
+ if (SN_ACPI_BASE_SUPPORT() && ssdt) {
+ acpi_status ret;
+
+ ret = acpi_load_table((struct acpi_table_header *)ssdt);
+ if (ACPI_FAILURE(ret)) {
+ printk(KERN_ERR "%s: acpi_load_table failed (0x%x)\n",
+ __func__, ret);
+ /* try to continue on */
+ }
+ }
+
num_funcs = pci_scan_slot(slot->pci_bus,
PCI_DEVFN(slot->device_num + 1, 0));
if (!num_funcs) {
- dev_dbg(slot->pci_bus->self, "no device in slot\n");
- up(&sn_hotplug_sem);
+ dev_dbg(&slot->pci_bus->self->dev, "no device in slot\n");
+ mutex_unlock(&sn_hotplug_mutex);
return -ENODEV;
}
- sn_pci_controller_fixup(pci_domain_nr(slot->pci_bus),
- slot->pci_bus->number,
- slot->pci_bus);
/*
* Map SN resources for all functions on the card
* to the Linux PCI interface and tell the drivers
PCI_DEVFN(slot->device_num + 1,
PCI_FUNC(func)));
if (dev) {
+ /* Need to do slot fixup on PPB before fixup of children
+ * (PPB's pcidev_info needs to be in pcidev_info list
+ * before child's SN_PCIDEV_INFO() call to setup
+ * pdi_host_pcidev_info).
+ */
+ pcibios_fixup_device_resources(dev);
+ if (SN_ACPI_BASE_SUPPORT())
+ sn_acpi_slot_fixup(dev);
+ else
+ sn_io_slot_fixup(dev);
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
unsigned char sec_bus;
pci_read_config_byte(dev, PCI_SECONDARY_BUS,
new_bus = pci_add_new_bus(dev->bus, dev,
sec_bus);
pci_scan_child_bus(new_bus);
- sn_pci_controller_fixup(pci_domain_nr(new_bus),
- new_bus->number,
- new_bus);
new_ppb = 1;
}
- sn_bus_alloc_data(dev);
pci_dev_put(dev);
}
}
+ /*
+ * Add the slot's devices to the ACPI infrastructure */
+ if (SN_ACPI_BASE_SUPPORT() && ssdt) {
+ unsigned long long adr;
+ struct acpi_device *pdevice;
+ struct acpi_device *device;
+ acpi_handle phandle;
+ acpi_handle chandle = NULL;
+ acpi_handle rethandle;
+ acpi_status ret;
+
+ phandle = PCI_CONTROLLER(slot->pci_bus)->acpi_handle;
+
+ if (acpi_bus_get_device(phandle, &pdevice)) {
+ dev_dbg(&slot->pci_bus->self->dev,
+ "no parent device, assuming NULL\n");
+ pdevice = NULL;
+ }
+
+ /*
+ * Walk the rootbus node's immediate children looking for
+ * the slot's device node(s). There can be more than
+ * one for multifunction devices.
+ */
+ for (;;) {
+ rethandle = NULL;
+ ret = acpi_get_next_object(ACPI_TYPE_DEVICE,
+ phandle, chandle,
+ &rethandle);
+
+ if (ret == AE_NOT_FOUND || rethandle == NULL)
+ break;
+
+ chandle = rethandle;
+
+ ret = acpi_evaluate_integer(chandle, METHOD_NAME__ADR,
+ NULL, &adr);
+
+ if (ACPI_SUCCESS(ret) &&
+ (adr>>16) == (slot->device_num + 1)) {
+
+ ret = acpi_bus_add(&device, pdevice, chandle,
+ ACPI_BUS_TYPE_DEVICE);
+ if (ACPI_FAILURE(ret)) {
+ printk(KERN_ERR "%s: acpi_bus_add "
+ "failed (0x%x) for slot %d "
+ "func %d\n", __func__,
+ ret, (int)(adr>>16),
+ (int)(adr&0xffff));
+ /* try to continue on */
+ } else {
+ acpi_bus_start(device);
+ }
+ }
+ }
+ }
+
/* Call the driver for the new device */
pci_bus_add_devices(slot->pci_bus);
/* Call the drivers for the new devices subordinate to PPB */
if (new_ppb)
pci_bus_add_devices(new_bus);
- up(&sn_hotplug_sem);
+ mutex_unlock(&sn_hotplug_mutex);
if (rc == 0)
- dev_dbg(slot->pci_bus->self,
+ dev_dbg(&slot->pci_bus->self->dev,
"insert operation successful\n");
else
- dev_dbg(slot->pci_bus->self,
+ dev_dbg(&slot->pci_bus->self->dev,
"insert operation failed rc = %d\n", rc);
return rc;
struct pci_dev *dev;
int func;
int rc;
+ acpi_owner_id ssdt_id = 0;
/* Acquire update access to the bus */
- down(&sn_hotplug_sem);
+ mutex_lock(&sn_hotplug_mutex);
/* is it okay to bring this slot down? */
rc = sn_slot_disable(bss_hotplug_slot, slot->device_num,
if (rc)
goto leaving;
+ /* free the ACPI resources for the slot */
+ if (SN_ACPI_BASE_SUPPORT() &&
+ PCI_CONTROLLER(slot->pci_bus)->acpi_handle) {
+ unsigned long long adr;
+ struct acpi_device *device;
+ acpi_handle phandle;
+ acpi_handle chandle = NULL;
+ acpi_handle rethandle;
+ acpi_status ret;
+
+ /* Get the rootbus node pointer */
+ phandle = PCI_CONTROLLER(slot->pci_bus)->acpi_handle;
+
+ /*
+ * Walk the rootbus node's immediate children looking for
+ * the slot's device node(s). There can be more than
+ * one for multifunction devices.
+ */
+ for (;;) {
+ rethandle = NULL;
+ ret = acpi_get_next_object(ACPI_TYPE_DEVICE,
+ phandle, chandle,
+ &rethandle);
+
+ if (ret == AE_NOT_FOUND || rethandle == NULL)
+ break;
+
+ chandle = rethandle;
+
+ ret = acpi_evaluate_integer(chandle,
+ METHOD_NAME__ADR,
+ NULL, &adr);
+ if (ACPI_SUCCESS(ret) &&
+ (adr>>16) == (slot->device_num + 1)) {
+ /* retain the owner id */
+ acpi_get_id(chandle, &ssdt_id);
+
+ ret = acpi_bus_get_device(chandle,
+ &device);
+ if (ACPI_SUCCESS(ret))
+ acpi_bus_trim(device, 1);
+ }
+ }
+
+ }
+
/* Free the SN resources assigned to the Linux device.*/
for (func = 0; func < 8; func++) {
dev = pci_get_slot(slot->pci_bus,
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);
}
}
+ /* Remove the SSDT for the slot from the ACPI namespace */
+ if (SN_ACPI_BASE_SUPPORT() && ssdt_id) {
+ acpi_status ret;
+ ret = acpi_unload_table_id(ssdt_id);
+ if (ACPI_FAILURE(ret)) {
+ printk(KERN_ERR "%s: acpi_unload_table_id "
+ "failed (0x%x) for id %d\n",
+ __func__, ret, ssdt_id);
+ /* try to continue on */
+ }
+ }
+
/* free the collected sysdata pointers */
sn_bus_free_sysdata();
PCI_REQ_SLOT_DISABLE);
leaving:
/* Release the bus lock */
- up(&sn_hotplug_sem);
+ mutex_unlock(&sn_hotplug_mutex);
return rc;
}
{
struct slot *slot = bss_hotplug_slot->private;
struct pcibus_info *pcibus_info;
+ u32 power;
pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
- down(&sn_hotplug_sem);
- *value = pcibus_info->pbi_enabled_devices & (1 << slot->device_num);
- up(&sn_hotplug_sem);
+ mutex_lock(&sn_hotplug_mutex);
+ power = pcibus_info->pbi_enabled_devices & (1 << slot->device_num);
+ *value = power ? 1 : 0;
+ mutex_unlock(&sn_hotplug_mutex);
return 0;
}
static void sn_release_slot(struct hotplug_slot *bss_hotplug_slot)
{
kfree(bss_hotplug_slot->info);
- kfree(bss_hotplug_slot->name);
kfree(bss_hotplug_slot->private);
kfree(bss_hotplug_slot);
}
static int sn_hotplug_slot_register(struct pci_bus *pci_bus)
{
int device;
+ struct pci_slot *pci_slot;
struct hotplug_slot *bss_hotplug_slot;
+ char name[SN_SLOT_NAME_SIZE];
int rc = 0;
/*
}
if (sn_hp_slot_private_alloc(bss_hotplug_slot,
- pci_bus, device)) {
+ pci_bus, device, name)) {
rc = -ENOMEM;
goto alloc_err;
}
-
bss_hotplug_slot->ops = &sn_hotplug_slot_ops;
bss_hotplug_slot->release = &sn_release_slot;
- rc = pci_hp_register(bss_hotplug_slot);
+ rc = pci_hp_register(bss_hotplug_slot, pci_bus, device, name);
if (rc)
goto register_err;
- rc = sysfs_create_file(&bss_hotplug_slot->kobj,
+ pci_slot = bss_hotplug_slot->pci_slot;
+ rc = sysfs_create_file(&pci_slot->kobj,
&sn_slot_path_attr.attr);
if (rc)
goto register_err;
}
- dev_dbg(pci_bus->self, "Registered bus with hotplug\n");
+ dev_dbg(&pci_bus->self->dev, "Registered bus with hotplug\n");
return rc;
register_err:
- dev_dbg(pci_bus->self, "bus failed to register with err = %d\n",
- rc);
+ dev_dbg(&pci_bus->self->dev, "bus failed to register with err = %d\n",
+ rc);
alloc_err:
if (rc == -ENOMEM)
- dev_dbg(pci_bus->self, "Memory allocation error\n");
+ dev_dbg(&pci_bus->self->dev, "Memory allocation error\n");
/* destroy THIS element */
if (bss_hotplug_slot)
return rc;
}
-static int sn_pci_hotplug_init(void)
+static int __init sn_pci_hotplug_init(void)
{
struct pci_bus *pci_bus = NULL;
int rc;
int registered = 0;
- if (sn_sal_rev() < SGI_HOTPLUG_PROM_REV) {
- printk(KERN_ERR "%s: PROM version must be greater than 4.30\n",
- __FUNCTION__);
+ if (!sn_prom_feature_available(PRF_HOTPLUG_SUPPORT)) {
+ printk(KERN_ERR "%s: PROM version does not support hotplug.\n",
+ __func__);
return -EPERM;
}
rc = sn_pci_bus_valid(pci_bus);
if (rc != 1) {
- dev_dbg(pci_bus->self, "not a valid hotplug bus\n");
+ dev_dbg(&pci_bus->self->dev, "not a valid hotplug bus\n");
continue;
}
- dev_dbg(pci_bus->self, "valid hotplug bus\n");
+ dev_dbg(&pci_bus->self->dev, "valid hotplug bus\n");
rc = sn_hotplug_slot_register(pci_bus);
if (!rc) {
return registered == 1 ? 0 : -ENODEV;
}
-static void sn_pci_hotplug_exit(void)
+static void __exit sn_pci_hotplug_exit(void)
{
struct hotplug_slot *bss_hotplug_slot;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff