Function bus_generic_alloc_resource

freebsd/kern/subr_bus.c:4213–4222

* @brief Helper function for implementing BUS_ALLOC_RESOURCE(). * * This simple implementation of BUS_ALLOC_RESOURCE() simply calls the * BUS_ALLOC_RESOURCE() method of the parent of @p dev. */

 * BUS_ALLOC_RESOURCE() method of the parent of @p dev.
 */
struct resource *
bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid,
    rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
	/* Propagate up the bus hierarchy until someone handles it. */
	if (dev->parent)
		return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid,
		    start, end, count, flags));
	return (NULL);
}

/**
 * @brief Helper function for implementing BUS_RELEASE_RESOURCE().