drivers/base/auxiliary.c

5  * Please see Documentation/driver-api/auxiliary_bus.rst for more information.
24  * too complex for a single device to be managed by a monolithic driver (e.g.
26  * of functionality (e.g. NICs + RDMA), or a driver may want to export an
31  * device-driver model.
55  * The auxiliary bus is to be used when a driver and one or more kernel
56  * modules, who share a common header file with the driver, need a mechanism to
58  * auxiliary_device's registering driver.  The registering driver for the
67  * driver allocates and registers an auxiliary_device for each physical
68  * function on the NIC.  The RDMA driver registers an auxiliary_driver that
70  * the parent PCI device/driver to the RDMA auxiliary_driver.
74  * function driver binds to such devices that creates its own one or more class
79  * initialized before a driver binds to an auxiliary_device.
114  * creates a match_name that is be used for matching and binding with a driver.
206 	struct auxiliary_driver *auxdrv = to_auxiliary_drv(dev->driver);
225 	struct auxiliary_driver *auxdrv = to_auxiliary_drv(dev->driver);
238 	if (dev->driver) {
239 		auxdrv = to_auxiliary_drv(dev->driver);
297  * @modname: name of the parent device's driver module
367  * __auxiliary_driver_register - register a driver for auxiliary bus devices
369  * @owner: owning module/driver
370  * @modname: KBUILD_MODNAME for parent driver
386 		auxdrv->driver.name = kasprintf(GFP_KERNEL, "%s.%s", modname,
389 		auxdrv->driver.name = kasprintf(GFP_KERNEL, "%s", modname);
390 	if (!auxdrv->driver.name)
393 	auxdrv->driver.owner = owner;
394 	auxdrv->driver.bus = &auxiliary_bus_type;
395 	auxdrv->driver.mod_name = modname;
397 	ret = driver_register(&auxdrv->driver);
399 		kfree(auxdrv->driver.name);
406  * auxiliary_driver_unregister - unregister a driver
411 	driver_unregister(&auxdrv->driver);
412 	kfree(auxdrv->driver.name);