Function devclass_driver_added

freebsd/kern/subr_bus.c:1065–1093

* @brief Register that a device driver has been added to a devclass * * Register that a device driver has been added to a devclass. This * is called by devclass_add_driver to accomplish the recursive * notification of all the children classes of dc, as well as dc. * Each layer will have BUS_DRIVER_ADDED() called for all instances of * the devclass. * * We do a full search here of the devc

 * @param driver	the driver that was just added
 */
static void
devclass_driver_added(devclass_t dc, driver_t *driver)
{
	devclass_t parent;
	int i;

	/*
	 * Call BUS_DRIVER_ADDED for any existing buses in this class.
	 */
	for (i = 0; i < dc->maxunit; i++)
		if (dc->devices[i] && device_is_attached(dc->devices[i]))
			BUS_DRIVER_ADDED(dc->devices[i], driver);

	/*
	 * Walk through the children classes.  Since we only keep a
	 * single parent pointer around, we walk the entire list of
	 * devclasses looking for children.  We set the
	 * DC_HAS_CHILDREN flag when a child devclass is created on
	 * the parent, so we only walk the list for those devclasses
	 * that have children.
	 */
	if (!(dc->flags & DC_HAS_CHILDREN))
		return;
	parent = dc;
	TAILQ_FOREACH(dc, &devclasses, link) {
		if (dc->parent == parent)
			devclass_driver_added(dc, driver);
	}
}

/**
 * @brief Add a device driver to a device class