diff options
Diffstat (limited to 'drivers/acpi/scan.c')
| -rw-r--r-- | drivers/acpi/scan.c | 175 |
1 files changed, 29 insertions, 146 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 464746257d8e..b616e17de522 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -25,7 +25,7 @@ DEFINE_SPINLOCK(acpi_device_lock); LIST_HEAD(acpi_wakeup_device_list); -static void acpi_device_release(struct kobject *kobj) +static void acpi_device_release_legacy(struct kobject *kobj) { struct acpi_device *dev = container_of(kobj, struct acpi_device, kobj); kfree(dev->pnp.cid_list); @@ -75,7 +75,7 @@ static struct sysfs_ops acpi_device_sysfs_ops = { static struct kobj_type ktype_acpi_ns = { .sysfs_ops = &acpi_device_sysfs_ops, - .release = acpi_device_release, + .release = acpi_device_release_legacy, }; static int namespace_uevent(struct kset *kset, struct kobject *kobj, @@ -222,6 +222,14 @@ acpi_eject_store(struct acpi_device *device, const char *buf, size_t count) /* -------------------------------------------------------------------------- ACPI Bus operations -------------------------------------------------------------------------- */ +static void acpi_device_release(struct device *dev) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + + kfree(acpi_dev->pnp.cid_list); + kfree(acpi_dev); +} + static int acpi_device_suspend(struct device *dev, pm_message_t state) { struct acpi_device *acpi_dev = to_acpi_device(dev); @@ -377,6 +385,14 @@ static void acpi_device_register(struct acpi_device *device, printk(KERN_WARNING "%s: kobject_register error: %d\n", __FUNCTION__, err); create_sysfs_device_files(device); + + if (device->parent) + device->dev.parent = &parent->dev; + device->dev.bus = &acpi_bus_type; + device_initialize(&device->dev); + sprintf(device->dev.bus_id, "%s", device->pnp.bus_id); + device->dev.release = &acpi_device_release; + device_add(&device->dev); } static void acpi_device_unregister(struct acpi_device *device, int type) @@ -395,20 +411,20 @@ static void acpi_device_unregister(struct acpi_device *device, int type) acpi_detach_data(device->handle, acpi_bus_data_handler); remove_sysfs_device_files(device); kobject_unregister(&device->kobj); + + device_unregister(&device->dev); } /* -------------------------------------------------------------------------- Driver Management -------------------------------------------------------------------------- */ -static LIST_HEAD(acpi_bus_drivers); - /** * acpi_bus_driver_init - add a device to a driver * @device: the device to add and initialize * @driver: driver for the device * * Used to initialize a device via its device driver. Called whenever a - * driver is bound to a device. Invokes the driver's add() and start() ops. + * driver is bound to a device. Invokes the driver's add() ops. */ static int acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver) @@ -459,57 +475,6 @@ static int acpi_start_single_object(struct acpi_device *device) return result; } -static void acpi_driver_attach(struct acpi_driver *drv) -{ - struct list_head *node, *next; - - - spin_lock(&acpi_device_lock); - list_for_each_safe(node, next, &acpi_device_list) { - struct acpi_device *dev = - container_of(node, struct acpi_device, g_list); - - if (dev->driver || !dev->status.present) - continue; - spin_unlock(&acpi_device_lock); - - if (!acpi_bus_match(&(dev->dev), &(drv->drv))) { - if (!acpi_bus_driver_init(dev, drv)) { - acpi_start_single_object(dev); - atomic_inc(&drv->references); - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Found driver [%s] for device [%s]\n", - drv->name, dev->pnp.bus_id)); - } - } - spin_lock(&acpi_device_lock); - } - spin_unlock(&acpi_device_lock); -} - -static void acpi_driver_detach(struct acpi_driver *drv) -{ - struct list_head *node, *next; - - - spin_lock(&acpi_device_lock); - list_for_each_safe(node, next, &acpi_device_list) { - struct acpi_device *dev = - container_of(node, struct acpi_device, g_list); - - if (dev->driver == drv) { - spin_unlock(&acpi_device_lock); - if (drv->ops.remove) - drv->ops.remove(dev, ACPI_BUS_REMOVAL_NORMAL); - spin_lock(&acpi_device_lock); - dev->driver = NULL; - dev->driver_data = NULL; - atomic_dec(&drv->references); - } - } - spin_unlock(&acpi_device_lock); -} - /** * acpi_bus_register_driver - register a driver with the ACPI bus * @driver: driver being registered @@ -520,16 +485,16 @@ static void acpi_driver_detach(struct acpi_driver *drv) */ int acpi_bus_register_driver(struct acpi_driver *driver) { + int ret; if (acpi_disabled) return -ENODEV; + driver->drv.name = driver->name; + driver->drv.bus = &acpi_bus_type; + driver->drv.owner = driver->owner; - spin_lock(&acpi_device_lock); - list_add_tail(&driver->node, &acpi_bus_drivers); - spin_unlock(&acpi_device_lock); - acpi_driver_attach(driver); - - return 0; + ret = driver_register(&driver->drv); + return ret; } EXPORT_SYMBOL(acpi_bus_register_driver); @@ -543,52 +508,11 @@ EXPORT_SYMBOL(acpi_bus_register_driver); */ void acpi_bus_unregister_driver(struct acpi_driver *driver) { - acpi_driver_detach(driver); - - if (!atomic_read(&driver->references)) { - spin_lock(&acpi_device_lock); - list_del_init(&driver->node); - spin_unlock(&acpi_device_lock); - } - return; + driver_unregister(&driver->drv); } EXPORT_SYMBOL(acpi_bus_unregister_driver); -/** - * acpi_bus_find_driver - check if there is a driver installed for the device - * @device: device that we are trying to find a supporting driver for - * - * Parses the list of registered drivers looking for a driver applicable for - * the specified device. - */ -static int acpi_bus_find_driver(struct acpi_device *device) -{ - int result = 0; - struct list_head *node, *next; - - - spin_lock(&acpi_device_lock); - list_for_each_safe(node, next, &acpi_bus_drivers) { - struct acpi_driver *driver = - container_of(node, struct acpi_driver, node); - - atomic_inc(&driver->references); - spin_unlock(&acpi_device_lock); - if (!acpi_bus_match(&(device->dev), &(driver->drv))) { - result = acpi_bus_driver_init(device, driver); - if (!result) - goto Done; - } - atomic_dec(&driver->references); - spin_lock(&acpi_device_lock); - } - spin_unlock(&acpi_device_lock); - - Done: - return result; -} - /* -------------------------------------------------------------------------- Device Enumeration -------------------------------------------------------------------------- */ @@ -1033,32 +957,10 @@ static void acpi_device_get_debug_info(struct acpi_device *device, static int acpi_bus_remove(struct acpi_device *dev, int rmdevice) { - int result = 0; - struct acpi_driver *driver; - - if (!dev) return -EINVAL; - driver = dev->driver; - - if ((driver) && (driver->ops.remove)) { - - if (driver->ops.stop) { - result = driver->ops.stop(dev, ACPI_BUS_REMOVAL_EJECT); - if (result) - return result; - } - - result = dev->driver->ops.remove(dev, ACPI_BUS_REMOVAL_EJECT); - if (result) { - return result; - } - - atomic_dec(&dev->driver->references); - dev->driver = NULL; - acpi_driver_data(dev) = NULL; - } + device_release_driver(&dev->dev); if (!rmdevice) return 0; @@ -1193,17 +1095,6 @@ acpi_add_single_object(struct acpi_device **child, device->parent->ops.bind(device); } - /* - * Locate & Attach Driver - * ---------------------- - * If there's a hardware id (_HID) or compatible ids (_CID) we check - * to see if there's a driver installed for this kind of device. Note - * that drivers can install before or after a device is enumerated. - * - * TBD: Assumes LDM provides driver hot-plug capability. - */ - acpi_bus_find_driver(device); - end: if (!result) *child = device; @@ -1484,14 +1375,6 @@ static int __init acpi_scan_init(void) if (result) goto Done; - acpi_root->dev.bus = &acpi_bus_type; - snprintf(acpi_root->dev.bus_id, BUS_ID_SIZE, "%s", acpi_bus_type.name); - result = device_register(&acpi_root->dev); - if (result) { - /* We don't want to quit even if we failed to add suspend/resume */ - printk(KERN_ERR PREFIX "Could not register device\n"); - } - /* * Enumerate devices in the ACPI namespace. */ |
