static LIST_HEAD(acpi_device_list);
static LIST_HEAD(acpi_bus_id_list);
+static DEFINE_MUTEX(acpi_scan_lock);
DEFINE_MUTEX(acpi_device_lock);
LIST_HEAD(acpi_wakeup_device_list);
void acpi_bus_hot_remove_device(void *context)
{
struct acpi_eject_event *ej_event = (struct acpi_eject_event *) context;
- struct acpi_device *device;
- acpi_handle handle = ej_event->handle;
+ struct acpi_device *device = ej_event->device;
+ acpi_handle handle = device->handle;
acpi_handle temp;
struct acpi_object_list arg_list;
union acpi_object arg;
acpi_status status = AE_OK;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
- if (acpi_bus_get_device(handle, &device))
- goto err_out;
-
- if (!device)
- goto err_out;
-
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Hot-removing device %s...\n", dev_name(&device->dev)));
- if (acpi_bus_trim(device, 1)) {
- printk(KERN_ERR PREFIX
- "Removing device failed\n");
- goto err_out;
- }
-
- /* device has been freed */
+ acpi_bus_trim(device);
+ /* Device node has been released. */
device = NULL;
/* power off device */
goto err;
}
- ej_event->handle = acpi_device->handle;
+ ej_event->device = acpi_device;
if (acpi_device->flags.eject_pending) {
/* event originated from ACPI eject notification */
ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
} else {
/* event originated from user */
ej_event->event = ACPI_OST_EC_OSPM_EJECT;
- (void) acpi_evaluate_hotplug_ost(ej_event->handle,
+ (void) acpi_evaluate_hotplug_ost(acpi_device->handle,
ej_event->event, ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
}
const struct device *dev)
{
struct acpi_device *adev;
+ acpi_handle handle = ACPI_HANDLE(dev);
- if (!ids || !ACPI_HANDLE(dev)
- || ACPI_FAILURE(acpi_bus_get_device(ACPI_HANDLE(dev), &adev)))
+ if (!ids || !handle || acpi_bus_get_device(handle, &adev))
return NULL;
return __acpi_match_device(adev, ids);
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = to_acpi_driver(drv);
- return !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
+ return acpi_dev->flags.match_driver
+ && !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
}
static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env)
}
static int acpi_bus_driver_init(struct acpi_device *, struct acpi_driver *);
-static int acpi_start_single_object(struct acpi_device *);
static int acpi_device_probe(struct device * dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
ret = acpi_bus_driver_init(acpi_dev, acpi_drv);
if (!ret) {
- if (acpi_dev->bus_ops.acpi_op_start)
- acpi_start_single_object(acpi_dev);
-
if (acpi_drv->ops.notify) {
ret = acpi_device_install_notify_handler(acpi_dev);
if (ret) {
return result;
}
-static void acpi_device_unregister(struct acpi_device *device, int type)
+static void acpi_device_unregister(struct acpi_device *device)
{
mutex_lock(&acpi_device_lock);
if (device->parent)
return 0;
}
-static int acpi_start_single_object(struct acpi_device *device)
-{
- int result = 0;
- struct acpi_driver *driver;
-
-
- if (!(driver = device->driver))
- return 0;
-
- if (driver->ops.start) {
- result = driver->ops.start(device);
- if (result && driver->ops.remove)
- driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL);
- }
-
- return result;
-}
-
/**
* acpi_bus_register_driver - register a driver with the ACPI bus
* @driver: driver being registered
return -ENODEV;
}
-static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
-{
- if (!dev)
- return -EINVAL;
-
- dev->removal_type = ACPI_BUS_REMOVAL_EJECT;
- device_release_driver(&dev->dev);
-
- if (!rmdevice)
- return 0;
-
- /*
- * unbind _ADR-Based Devices when hot removal
- */
- if (dev->flags.bus_address) {
- if ((dev->parent) && (dev->parent->ops.unbind))
- dev->parent->ops.unbind(dev);
- }
- acpi_device_unregister(dev, ACPI_BUS_REMOVAL_EJECT);
-
- return 0;
-}
-
static int acpi_add_single_object(struct acpi_device **child,
acpi_handle handle, int type,
- unsigned long long sta,
- struct acpi_bus_ops *ops)
+ unsigned long long sta, bool match_driver)
{
int result;
struct acpi_device *device;
device->device_type = type;
device->handle = handle;
device->parent = acpi_bus_get_parent(handle);
- device->bus_ops = *ops; /* workround for not call .start */
STRUCT_TO_INT(device->status) = sta;
acpi_device_get_busid(device);
if ((result = acpi_device_set_context(device)))
goto end;
+ device->flags.match_driver = match_driver;
result = acpi_device_register(device);
- /*
- * Bind _ADR-Based Devices when hot add
- */
- if (device->flags.bus_address) {
- if (device->parent && device->parent->ops.bind)
- device->parent->ops.bind(device);
- }
-
end:
if (!result) {
acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
static void acpi_bus_add_power_resource(acpi_handle handle)
{
- struct acpi_bus_ops ops = {
- .acpi_op_add = 1,
- .acpi_op_start = 1,
- };
struct acpi_device *device = NULL;
acpi_bus_get_device(handle, &device);
if (!device)
acpi_add_single_object(&device, handle, ACPI_BUS_TYPE_POWER,
- ACPI_STA_DEFAULT, &ops);
+ ACPI_STA_DEFAULT, true);
}
static int acpi_bus_type_and_status(acpi_handle handle, int *type,
return 0;
}
-static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl,
- void *context, void **return_value)
+static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
+ void *not_used, void **return_value)
{
- struct acpi_bus_ops *ops = context;
+ struct acpi_device *device = NULL;
int type;
unsigned long long sta;
- struct acpi_device *device;
acpi_status status;
int result;
+ acpi_bus_get_device(handle, &device);
+ if (device)
+ goto out;
+
result = acpi_bus_type_and_status(handle, &type, &sta);
if (result)
return AE_OK;
return AE_CTRL_DEPTH;
}
- /*
- * We may already have an acpi_device from a previous enumeration. If
- * so, we needn't add it again, but we may still have to start it.
- */
- device = NULL;
- acpi_bus_get_device(handle, &device);
- if (ops->acpi_op_add && !device) {
- acpi_add_single_object(&device, handle, type, sta, ops);
- /* Is the device a known good platform device? */
- if (device
- && !acpi_match_device_ids(device, acpi_platform_device_ids))
- acpi_create_platform_device(device);
- }
-
+ acpi_add_single_object(&device, handle, type, sta,
+ type == ACPI_BUS_TYPE_POWER);
if (!device)
return AE_CTRL_DEPTH;
- if (ops->acpi_op_start && !(ops->acpi_op_add)) {
- status = acpi_start_single_object(device);
- if (ACPI_FAILURE(status))
- return AE_CTRL_DEPTH;
- }
+ device->flags.match_driver = true;
+ out:
if (!*return_value)
*return_value = device;
+
return AE_OK;
}
-static int acpi_bus_scan(acpi_handle handle, struct acpi_bus_ops *ops,
- struct acpi_device **child)
+static acpi_status acpi_bus_device_attach(acpi_handle handle, u32 lvl_not_used,
+ void *not_used, void **ret_not_used)
{
- acpi_status status;
- void *device = NULL;
+ acpi_status status = AE_OK;
+ struct acpi_device *device;
+ unsigned long long sta_not_used;
+ int type_not_used;
- status = acpi_bus_check_add(handle, 0, ops, &device);
- if (ACPI_SUCCESS(status))
- acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
- acpi_bus_check_add, NULL, ops, &device);
+ /*
+ * Ignore errors ignored by acpi_bus_check_add() to avoid terminating
+ * namespace walks prematurely.
+ */
+ if (acpi_bus_type_and_status(handle, &type_not_used, &sta_not_used))
+ return AE_OK;
- if (child)
- *child = device;
+ if (acpi_bus_get_device(handle, &device))
+ return AE_CTRL_DEPTH;
- if (device)
- return 0;
- else
- return -ENODEV;
+ if (!acpi_match_device_ids(device, acpi_platform_device_ids)) {
+ /* This is a known good platform device. */
+ acpi_create_platform_device(device);
+ } else if (device_attach(&device->dev) < 0) {
+ status = AE_CTRL_DEPTH;
+ }
+ return status;
}
-/*
- * acpi_bus_add and acpi_bus_start
+/**
+ * acpi_bus_scan - Add ACPI device node objects in a given namespace scope.
+ * @handle: Root of the namespace scope to scan.
*
- * scan a given ACPI tree and (probably recently hot-plugged)
- * create and add or starts found devices.
+ * Scan a given ACPI tree (probably recently hot-plugged) and create and add
+ * found devices.
*
- * If no devices were found -ENODEV is returned which does not
- * mean that this is a real error, there just have been no suitable
- * ACPI objects in the table trunk from which the kernel could create
- * a device and add/start an appropriate driver.
+ * If no devices were found, -ENODEV is returned, but it does not mean that
+ * there has been a real error. There just have been no suitable ACPI objects
+ * in the table trunk from which the kernel could create a device and add an
+ * appropriate driver.
*/
-
-int
-acpi_bus_add(struct acpi_device **child,
- struct acpi_device *parent, acpi_handle handle, int type)
+int acpi_bus_scan(acpi_handle handle)
{
- struct acpi_bus_ops ops;
-
- memset(&ops, 0, sizeof(ops));
- ops.acpi_op_add = 1;
+ void *device = NULL;
+ int error = 0;
- return acpi_bus_scan(handle, &ops, child);
-}
-EXPORT_SYMBOL(acpi_bus_add);
+ mutex_lock(&acpi_scan_lock);
-int acpi_bus_start(struct acpi_device *device)
-{
- struct acpi_bus_ops ops;
- int result;
+ if (ACPI_SUCCESS(acpi_bus_check_add(handle, 0, NULL, &device)))
+ acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
+ acpi_bus_check_add, NULL, NULL, &device);
if (!device)
- return -EINVAL;
-
- memset(&ops, 0, sizeof(ops));
- ops.acpi_op_start = 1;
+ error = -ENODEV;
+ else if (ACPI_SUCCESS(acpi_bus_device_attach(handle, 0, NULL, NULL)))
+ acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
+ acpi_bus_device_attach, NULL, NULL, NULL);
- result = acpi_bus_scan(device->handle, &ops, NULL);
+ mutex_unlock(&acpi_scan_lock);
+ return error;
+}
+EXPORT_SYMBOL(acpi_bus_scan);
- acpi_update_all_gpes();
+static acpi_status acpi_bus_device_detach(acpi_handle handle, u32 lvl_not_used,
+ void *not_used, void **ret_not_used)
+{
+ struct acpi_device *device = NULL;
- return result;
+ if (!acpi_bus_get_device(handle, &device)) {
+ device->removal_type = ACPI_BUS_REMOVAL_EJECT;
+ device_release_driver(&device->dev);
+ }
+ return AE_OK;
}
-EXPORT_SYMBOL(acpi_bus_start);
-int acpi_bus_trim(struct acpi_device *start, int rmdevice)
+static acpi_status acpi_bus_remove(acpi_handle handle, u32 lvl_not_used,
+ void *not_used, void **ret_not_used)
{
- acpi_status status;
- struct acpi_device *parent, *child;
- acpi_handle phandle, chandle;
- acpi_object_type type;
- u32 level = 1;
- int err = 0;
+ struct acpi_device *device = NULL;
- parent = start;
- phandle = start->handle;
- child = chandle = NULL;
+ if (!acpi_bus_get_device(handle, &device))
+ acpi_device_unregister(device);
- while ((level > 0) && parent && (!err)) {
- status = acpi_get_next_object(ACPI_TYPE_ANY, phandle,
- chandle, &chandle);
+ return AE_OK;
+}
- /*
- * If this scope is exhausted then move our way back up.
- */
- if (ACPI_FAILURE(status)) {
- level--;
- chandle = phandle;
- acpi_get_parent(phandle, &phandle);
- child = parent;
- parent = parent->parent;
-
- if (level == 0)
- err = acpi_bus_remove(child, rmdevice);
- else
- err = acpi_bus_remove(child, 1);
+void acpi_bus_trim(struct acpi_device *start)
+{
+ mutex_lock(&acpi_scan_lock);
- continue;
- }
+ /*
+ * Execute acpi_bus_device_detach() as a post-order callback to detach
+ * all ACPI drivers from the device nodes being removed.
+ */
+ acpi_walk_namespace(ACPI_TYPE_ANY, start->handle, ACPI_UINT32_MAX, NULL,
+ acpi_bus_device_detach, NULL, NULL);
+ acpi_bus_device_detach(start->handle, 0, NULL, NULL);
+ /*
+ * Execute acpi_bus_remove() as a post-order callback to remove device
+ * nodes in the given namespace scope.
+ */
+ acpi_walk_namespace(ACPI_TYPE_ANY, start->handle, ACPI_UINT32_MAX, NULL,
+ acpi_bus_remove, NULL, NULL);
+ acpi_bus_remove(start->handle, 0, NULL, NULL);
- status = acpi_get_type(chandle, &type);
- if (ACPI_FAILURE(status)) {
- continue;
- }
- /*
- * If there is a device corresponding to chandle then
- * parse it (depth-first).
- */
- if (acpi_bus_get_device(chandle, &child) == 0) {
- level++;
- phandle = chandle;
- chandle = NULL;
- parent = child;
- }
- continue;
- }
- return err;
+ mutex_unlock(&acpi_scan_lock);
}
EXPORT_SYMBOL_GPL(acpi_bus_trim);
{
int result = 0;
struct acpi_device *device = NULL;
- struct acpi_bus_ops ops;
-
- memset(&ops, 0, sizeof(ops));
- ops.acpi_op_add = 1;
- ops.acpi_op_start = 1;
/*
* Enumerate all fixed-feature devices.
if ((acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON) == 0) {
result = acpi_add_single_object(&device, NULL,
ACPI_BUS_TYPE_POWER_BUTTON,
- ACPI_STA_DEFAULT,
- &ops);
+ ACPI_STA_DEFAULT, true);
device_init_wakeup(&device->dev, true);
}
if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
result = acpi_add_single_object(&device, NULL,
ACPI_BUS_TYPE_SLEEP_BUTTON,
- ACPI_STA_DEFAULT,
- &ops);
+ ACPI_STA_DEFAULT, true);
}
return result;
int __init acpi_scan_init(void)
{
int result;
- struct acpi_bus_ops ops;
-
- memset(&ops, 0, sizeof(ops));
- ops.acpi_op_add = 1;
- ops.acpi_op_start = 1;
result = bus_register(&acpi_bus_type);
if (result) {
}
acpi_power_init();
+ acpi_pci_root_init();
/*
* Enumerate devices in the ACPI namespace.
*/
- result = acpi_bus_scan(ACPI_ROOT_OBJECT, &ops, &acpi_root);
-
- if (!result)
- result = acpi_bus_scan_fixed();
+ result = acpi_bus_scan(ACPI_ROOT_OBJECT);
+ if (result)
+ return result;
+ result = acpi_bus_get_device(ACPI_ROOT_OBJECT, &acpi_root);
if (result)
- acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
- else
- acpi_update_all_gpes();
+ return result;
- return result;
+ result = acpi_bus_scan_fixed();
+ if (result) {
+ acpi_device_unregister(acpi_root);
+ return result;
+ }
+
+ acpi_update_all_gpes();
+ return 0;
}
git.openpandora.org / pandora-kernel.git / blobdiff