| .. SPDX-License-Identifier: GPL-2.0-only | 
 |  | 
 | .. _auxiliary_bus: | 
 |  | 
 | ============= | 
 | Auxiliary Bus | 
 | ============= | 
 |  | 
 | .. kernel-doc:: drivers/base/auxiliary.c | 
 |    :doc: PURPOSE | 
 |  | 
 | When Should the Auxiliary Bus Be Used | 
 | ===================================== | 
 |  | 
 | .. kernel-doc:: drivers/base/auxiliary.c | 
 |    :doc: USAGE | 
 |  | 
 |  | 
 | Auxiliary Device Creation | 
 | ========================= | 
 |  | 
 | .. kernel-doc:: include/linux/auxiliary_bus.h | 
 |    :identifiers: auxiliary_device | 
 |  | 
 | .. kernel-doc:: drivers/base/auxiliary.c | 
 |    :identifiers: auxiliary_device_init __auxiliary_device_add | 
 |                  auxiliary_find_device | 
 |  | 
 | Auxiliary Device Memory Model and Lifespan | 
 | ------------------------------------------ | 
 |  | 
 | .. kernel-doc:: include/linux/auxiliary_bus.h | 
 |    :doc: DEVICE_LIFESPAN | 
 |  | 
 |  | 
 | Auxiliary Drivers | 
 | ================= | 
 |  | 
 | .. kernel-doc:: include/linux/auxiliary_bus.h | 
 |    :identifiers: auxiliary_driver module_auxiliary_driver | 
 |  | 
 | .. kernel-doc:: drivers/base/auxiliary.c | 
 |    :identifiers: __auxiliary_driver_register auxiliary_driver_unregister | 
 |  | 
 | Example Usage | 
 | ============= | 
 |  | 
 | .. kernel-doc:: drivers/base/auxiliary.c | 
 |    :doc: EXAMPLE | 
 |  |