diff options
Diffstat (limited to 'drivers/acpi/scan.c')
| -rw-r--r-- | drivers/acpi/scan.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 7d164a966b0d..c6d60910e8a8 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -633,6 +633,7 @@ static int acpi_device_register(struct acpi_device *device) INIT_LIST_HEAD(&device->wakeup_list); INIT_LIST_HEAD(&device->physical_node_list); mutex_init(&device->physical_node_lock); + INIT_LIST_HEAD(&device->power_dependent); new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL); if (!new_bus_id) { @@ -706,8 +707,14 @@ static void acpi_device_unregister(struct acpi_device *device) acpi_detach_data(device->handle, acpi_bus_data_handler); + acpi_power_add_remove_device(device, false); acpi_device_remove_files(device); device_unregister(&device->dev); + /* + * Drop the reference counts of all power resources the device depends + * on and turn off the ones that have no more references. + */ + acpi_power_transition(device, ACPI_STATE_D3_COLD); } /* -------------------------------------------------------------------------- @@ -1441,6 +1448,7 @@ static int acpi_add_single_object(struct acpi_device **child, end: if (!result) { + acpi_power_add_remove_device(device, true); acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Adding %s [%s] parent %s\n", dev_name(&device->dev), |