freebsd man page for device_find_child

DEVICE_FIND_CHILD(9)					   BSD Kernel Developer's Manual				      DEVICE_FIND_CHILD(9)

NAME
     device_find_child -- search for a child of a device

SYNOPSIS
     #include <sys/param.h>
     #include <sys/bus.h>

     device_t
     device_find_child(device_t dev, const char *classname, int unit);

DESCRIPTION
     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.

SEE ALSO
     device_add_child(9)

AUTHORS
     This manual page was written by Doug Rabson.

BSD
								 February 8, 2005							       BSD