* 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
+ * Send feedback to <kristen.c.accardi@intel.com>
*
*/
-#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/kobject.h>
+#include <linux/sysfs.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/mutex.h>
#include <linux/pci.h>
+#include <linux/pci_hotplug.h>
#include <asm/uaccess.h>
-#include <linux/kobject.h>
-#include <linux/sysfs.h>
-#include "pci_hotplug.h"
-
+#include "../pci.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 dbg(fmt, arg...) do { if (debug) printk(KERN_DEBUG "%s: %s: " fmt , MY_NAME , __func__ , ## 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)
//////////////////////////////////////////////////////////////////
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);
+static DEFINE_MUTEX(pci_hp_mutex);
/* these strings match up with the values in pci_bus_speed */
static char *pci_bus_speed_strings[] = {
"66 MHz PCIX 533", /* 0x11 */
"100 MHz PCIX 533", /* 0x12 */
"133 MHz PCIX 533", /* 0x13 */
- "25 GBps PCI-E", /* 0x14 */
+ "2.5 GT/s PCI-E", /* 0x14 */
+ "5.0 GT/s PCI-E", /* 0x15 */
};
#ifdef CONFIG_HOTPLUG_PCI_CPCI
{ \
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); \
- } \
+ if (!try_module_get(ops->owner)) \
+ return -ENODEV; \
+ if (ops->get_##name) \
+ retval = ops->get_##name(slot, value); \
+ else \
+ *value = slot->info->name; \
+ module_put(ops->owner); \
return retval; \
}
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)
+static ssize_t power_read_file(struct pci_slot *slot, char *buf)
{
int retval;
u8 value;
- retval = get_power_status (slot, &value);
+ retval = get_power_status(slot->hotplug, &value);
if (retval)
goto exit;
retval = sprintf (buf, "%d\n", value);
return retval;
}
-static ssize_t power_write_file (struct hotplug_slot *slot, const char *buf,
+static ssize_t power_write_file(struct pci_slot *pci_slot, const char *buf,
size_t count)
{
+ struct hotplug_slot *slot = pci_slot->hotplug;
unsigned long lpower;
u8 power;
int retval = 0;
return count;
}
-static struct hotplug_slot_attribute hotplug_slot_attr_power = {
+static struct pci_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)
+static ssize_t attention_read_file(struct pci_slot *slot, char *buf)
{
int retval;
u8 value;
- retval = get_attention_status (slot, &value);
+ retval = get_attention_status(slot->hotplug, &value);
if (retval)
goto exit;
- retval = sprintf (buf, "%d\n", value);
+ retval = sprintf(buf, "%d\n", value);
exit:
return retval;
}
-static ssize_t attention_write_file (struct hotplug_slot *slot, const char *buf,
+static ssize_t attention_write_file(struct pci_slot *slot, const char *buf,
size_t count)
{
+ struct hotplug_slot_ops *ops = slot->hotplug->ops;
unsigned long lattention;
u8 attention;
int retval = 0;
attention = (u8)(lattention & 0xff);
dbg (" - attention = %d\n", attention);
- if (!try_module_get(slot->ops->owner)) {
+ if (!try_module_get(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);
+ if (ops->set_attention_status)
+ retval = ops->set_attention_status(slot->hotplug, attention);
+ module_put(ops->owner);
exit:
if (retval)
return count;
}
-static struct hotplug_slot_attribute hotplug_slot_attr_attention = {
+static struct pci_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)
+static ssize_t latch_read_file(struct pci_slot *slot, char *buf)
{
int retval;
u8 value;
- retval = get_latch_status (slot, &value);
+ retval = get_latch_status(slot->hotplug, &value);
if (retval)
goto exit;
retval = sprintf (buf, "%d\n", value);
return retval;
}
-static struct hotplug_slot_attribute hotplug_slot_attr_latch = {
+static struct pci_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)
+static ssize_t presence_read_file(struct pci_slot *slot, char *buf)
{
int retval;
u8 value;
- retval = get_adapter_status (slot, &value);
+ retval = get_adapter_status(slot->hotplug, &value);
if (retval)
goto exit;
retval = sprintf (buf, "%d\n", value);
return retval;
}
-static struct hotplug_slot_attribute hotplug_slot_attr_presence = {
+static struct pci_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)
+static ssize_t max_bus_speed_read_file(struct pci_slot *slot, char *buf)
{
char *speed_string;
int retval;
enum pci_bus_speed value;
- retval = get_max_bus_speed (slot, &value);
+ retval = get_max_bus_speed(slot->hotplug, &value);
if (retval)
goto exit;
return retval;
}
-static struct hotplug_slot_attribute hotplug_slot_attr_max_bus_speed = {
+static struct pci_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)
+static ssize_t cur_bus_speed_read_file(struct pci_slot *slot, char *buf)
{
char *speed_string;
int retval;
enum pci_bus_speed value;
- retval = get_cur_bus_speed (slot, &value);
+ retval = get_cur_bus_speed(slot->hotplug, &value);
if (retval)
goto exit;
return retval;
}
-static struct hotplug_slot_attribute hotplug_slot_attr_cur_bus_speed = {
+static struct pci_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,
+static ssize_t test_write_file(struct pci_slot *pci_slot, const char *buf,
size_t count)
{
+ struct hotplug_slot *slot = pci_slot->hotplug;
unsigned long ltest;
u32 test;
int retval = 0;
return count;
}
-static struct hotplug_slot_attribute hotplug_slot_attr_test = {
+static struct pci_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)
+static bool has_power_file(struct pci_slot *pci_slot)
{
+ struct hotplug_slot *slot = pci_slot->hotplug;
if ((!slot) || (!slot->ops))
- return -ENODEV;
+ return false;
if ((slot->ops->enable_slot) ||
(slot->ops->disable_slot) ||
(slot->ops->get_power_status))
- return 0;
- return -ENOENT;
+ return true;
+ return false;
}
-static int has_attention_file (struct hotplug_slot *slot)
+static bool has_attention_file(struct pci_slot *pci_slot)
{
+ struct hotplug_slot *slot = pci_slot->hotplug;
if ((!slot) || (!slot->ops))
- return -ENODEV;
+ return false;
if ((slot->ops->set_attention_status) ||
(slot->ops->get_attention_status))
- return 0;
- return -ENOENT;
+ return true;
+ return false;
}
-static int has_latch_file (struct hotplug_slot *slot)
+static bool has_latch_file(struct pci_slot *pci_slot)
{
+ struct hotplug_slot *slot = pci_slot->hotplug;
if ((!slot) || (!slot->ops))
- return -ENODEV;
+ return false;
if (slot->ops->get_latch_status)
- return 0;
- return -ENOENT;
+ return true;
+ return false;
}
-static int has_adapter_file (struct hotplug_slot *slot)
+static bool has_adapter_file(struct pci_slot *pci_slot)
{
+ struct hotplug_slot *slot = pci_slot->hotplug;
if ((!slot) || (!slot->ops))
- return -ENODEV;
+ return false;
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;
+ return true;
+ return false;
}
-static int has_max_bus_speed_file (struct hotplug_slot *slot)
+static bool has_max_bus_speed_file(struct pci_slot *pci_slot)
{
+ struct hotplug_slot *slot = pci_slot->hotplug;
if ((!slot) || (!slot->ops))
- return -ENODEV;
+ return false;
if (slot->ops->get_max_bus_speed)
- return 0;
- return -ENOENT;
+ return true;
+ return false;
}
-static int has_cur_bus_speed_file (struct hotplug_slot *slot)
+static bool has_cur_bus_speed_file(struct pci_slot *pci_slot)
{
+ struct hotplug_slot *slot = pci_slot->hotplug;
if ((!slot) || (!slot->ops))
- return -ENODEV;
+ return false;
if (slot->ops->get_cur_bus_speed)
- return 0;
- return -ENOENT;
+ return true;
+ return false;
}
-static int has_test_file (struct hotplug_slot *slot)
+static bool has_test_file(struct pci_slot *pci_slot)
{
+ struct hotplug_slot *slot = pci_slot->hotplug;
if ((!slot) || (!slot->ops))
- return -ENODEV;
+ return false;
if (slot->ops->hardware_test)
- return 0;
- return -ENOENT;
+ return true;
+ return false;
}
-static int fs_add_slot (struct hotplug_slot *slot)
+static int fs_add_slot(struct pci_slot *slot)
{
- if (has_power_file(slot) == 0)
- sysfs_create_file(&slot->kobj, &hotplug_slot_attr_power.attr);
+ int retval = 0;
- if (has_attention_file(slot) == 0)
- sysfs_create_file(&slot->kobj, &hotplug_slot_attr_attention.attr);
+ /* Create symbolic link to the hotplug driver module */
+ pci_hp_create_module_link(slot);
- if (has_latch_file(slot) == 0)
- sysfs_create_file(&slot->kobj, &hotplug_slot_attr_latch.attr);
+ if (has_power_file(slot)) {
+ retval = sysfs_create_file(&slot->kobj,
+ &hotplug_slot_attr_power.attr);
+ if (retval)
+ goto exit_power;
+ }
- if (has_adapter_file(slot) == 0)
- sysfs_create_file(&slot->kobj, &hotplug_slot_attr_presence.attr);
+ if (has_attention_file(slot)) {
+ retval = sysfs_create_file(&slot->kobj,
+ &hotplug_slot_attr_attention.attr);
+ if (retval)
+ goto exit_attention;
+ }
- if (has_address_file(slot) == 0)
- sysfs_create_file(&slot->kobj, &hotplug_slot_attr_address.attr);
+ if (has_latch_file(slot)) {
+ retval = sysfs_create_file(&slot->kobj,
+ &hotplug_slot_attr_latch.attr);
+ if (retval)
+ goto exit_latch;
+ }
- if (has_max_bus_speed_file(slot) == 0)
- sysfs_create_file(&slot->kobj, &hotplug_slot_attr_max_bus_speed.attr);
+ if (has_adapter_file(slot)) {
+ retval = sysfs_create_file(&slot->kobj,
+ &hotplug_slot_attr_presence.attr);
+ if (retval)
+ goto exit_adapter;
+ }
- if (has_cur_bus_speed_file(slot) == 0)
- sysfs_create_file(&slot->kobj, &hotplug_slot_attr_cur_bus_speed.attr);
+ if (has_max_bus_speed_file(slot)) {
+ retval = sysfs_create_file(&slot->kobj,
+ &hotplug_slot_attr_max_bus_speed.attr);
+ if (retval)
+ goto exit_max_speed;
+ }
- if (has_test_file(slot) == 0)
- sysfs_create_file(&slot->kobj, &hotplug_slot_attr_test.attr);
+ if (has_cur_bus_speed_file(slot)) {
+ retval = sysfs_create_file(&slot->kobj,
+ &hotplug_slot_attr_cur_bus_speed.attr);
+ if (retval)
+ goto exit_cur_speed;
+ }
- return 0;
+ if (has_test_file(slot)) {
+ retval = sysfs_create_file(&slot->kobj,
+ &hotplug_slot_attr_test.attr);
+ if (retval)
+ goto exit_test;
+ }
+
+ goto exit;
+
+exit_test:
+ if (has_cur_bus_speed_file(slot))
+ sysfs_remove_file(&slot->kobj,
+ &hotplug_slot_attr_cur_bus_speed.attr);
+exit_cur_speed:
+ if (has_max_bus_speed_file(slot))
+ sysfs_remove_file(&slot->kobj,
+ &hotplug_slot_attr_max_bus_speed.attr);
+exit_max_speed:
+ if (has_adapter_file(slot))
+ sysfs_remove_file(&slot->kobj,
+ &hotplug_slot_attr_presence.attr);
+exit_adapter:
+ if (has_latch_file(slot))
+ sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_latch.attr);
+exit_latch:
+ if (has_attention_file(slot))
+ sysfs_remove_file(&slot->kobj,
+ &hotplug_slot_attr_attention.attr);
+exit_attention:
+ if (has_power_file(slot))
+ sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_power.attr);
+exit_power:
+ pci_hp_remove_module_link(slot);
+exit:
+ return retval;
}
-static void fs_remove_slot (struct hotplug_slot *slot)
+static void fs_remove_slot(struct pci_slot *slot)
{
- if (has_power_file(slot) == 0)
+ if (has_power_file(slot))
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_attention_file(slot))
+ sysfs_remove_file(&slot->kobj,
+ &hotplug_slot_attr_attention.attr);
- if (has_latch_file(slot) == 0)
+ if (has_latch_file(slot))
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_adapter_file(slot))
+ sysfs_remove_file(&slot->kobj,
+ &hotplug_slot_attr_presence.attr);
- if (has_max_bus_speed_file(slot) == 0)
- sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_max_bus_speed.attr);
+ if (has_max_bus_speed_file(slot))
+ 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_cur_bus_speed_file(slot))
+ sysfs_remove_file(&slot->kobj,
+ &hotplug_slot_attr_cur_bus_speed.attr);
- if (has_test_file(slot) == 0)
+ if (has_test_file(slot))
sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_test.attr);
+
+ pci_hp_remove_module_link(slot);
}
static struct hotplug_slot *get_slot_from_name (const char *name)
list_for_each (tmp, &pci_hotplug_slot_list) {
slot = list_entry (tmp, struct hotplug_slot, slot_list);
- if (strcmp(slot->name, name) == 0)
+ if (strcmp(hotplug_slot_name(slot), name) == 0)
return slot;
}
return NULL;
}
/**
- * pci_hp_register - register a hotplug_slot with the PCI hotplug subsystem
+ * __pci_hp_register - register a hotplug_slot with the PCI hotplug subsystem
+ * @bus: bus this slot is on
* @slot: pointer to the &struct hotplug_slot to register
+ * @devnr: device number
+ * @name: name registered with kobject core
+ * @owner: caller module owner
+ * @mod_name: caller module name
*
* 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 __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus,
+ int devnr, const char *name,
+ struct module *owner, const char *mod_name)
{
int result;
+ struct pci_slot *pci_slot;
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"
+ 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);
+ slot->ops->owner = owner;
+ slot->ops->mod_name = mod_name;
- /* 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;
+ mutex_lock(&pci_hp_mutex);
+ /*
+ * No problems if we call this interface from both ACPI_PCI_SLOT
+ * driver and call it here again. If we've already created the
+ * pci_slot, the interface will simply bump the refcount.
+ */
+ pci_slot = pci_create_slot(bus, devnr, name, slot);
+ if (IS_ERR(pci_slot)) {
+ result = PTR_ERR(pci_slot);
+ goto out;
}
-
- list_add (&slot->slot_list, &pci_hotplug_slot_list);
- result = fs_add_slot (slot);
- dbg ("Added slot %s to the list\n", slot->name);
+ slot->pci_slot = pci_slot;
+ pci_slot->hotplug = slot;
+
+ list_add(&slot->slot_list, &pci_hotplug_slot_list);
+
+ result = fs_add_slot(pci_slot);
+ kobject_uevent(&pci_slot->kobj, KOBJ_ADD);
+ dbg("Added slot %s to the list\n", name);
+out:
+ mutex_unlock(&pci_hp_mutex);
return result;
}
/**
* pci_hp_deregister - deregister a hotplug_slot with the PCI hotplug subsystem
- * @slot: pointer to the &struct hotplug_slot to deregister
+ * @hotplug: 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)
+int pci_hp_deregister(struct hotplug_slot *hotplug)
{
struct hotplug_slot *temp;
+ struct pci_slot *slot;
- if (slot == NULL)
+ if (!hotplug)
return -ENODEV;
- temp = get_slot_from_name (slot->name);
- if (temp != slot) {
+ mutex_lock(&pci_hp_mutex);
+ temp = get_slot_from_name(hotplug_slot_name(hotplug));
+ if (temp != hotplug) {
+ mutex_unlock(&pci_hp_mutex);
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);
+ list_del(&hotplug->slot_list);
+
+ slot = hotplug->pci_slot;
+ fs_remove_slot(slot);
+ dbg("Removed slot %s from the list\n", hotplug_slot_name(hotplug));
+
+ hotplug->release(hotplug);
+ slot->hotplug = NULL;
+ pci_destroy_slot(slot);
+ mutex_unlock(&pci_hp_mutex);
+
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
+ * @hotplug: 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
*
* Returns 0 if successful, anything else for an error.
*/
-int pci_hp_change_slot_info (struct hotplug_slot *slot, struct hotplug_slot_info *info)
+int __must_check pci_hp_change_slot_info(struct hotplug_slot *hotplug,
+ struct hotplug_slot_info *info)
{
- if ((slot == NULL) || (info == NULL))
+ struct pci_slot *slot;
+ if (!hotplug || !info)
return -ENODEV;
+ slot = hotplug->pci_slot;
- /*
- * 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));
+ memcpy(hotplug->info, info, sizeof(struct hotplug_slot_info));
return 0;
}
{
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;
+ goto err_cpci;
}
info (DRIVER_DESC " version: " DRIVER_VERSION "\n");
- goto exit;
-
-err_subsys:
- subsystem_unregister(&pci_hotplug_slots_subsys);
-exit:
+
+err_cpci:
return result;
}
static void __exit pci_hotplug_exit (void)
{
cpci_hotplug_exit();
- subsystem_unregister(&pci_hotplug_slots_subsys);
}
module_init(pci_hotplug_init);
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_register);
EXPORT_SYMBOL_GPL(pci_hp_deregister);
EXPORT_SYMBOL_GPL(pci_hp_change_slot_info);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff