device_find_child9
Search for a child of a device
Usage
#include <sys/param.h>
#include <sys/bus.h>
device_t
device_find_child(device_t dev, const char *classname, int unit);
Overview
This function looks for a specific child of dev with the given classname and unit. If unit is -1, it returns the first child of dev with a matching classname (that is, the one with the lowest unit).
Return values
If it exists, the child device is returned, otherwise NULL.
Releases
77 releases since FreeBSD 3.0-RELEASE; the text changed 41 times.