devclass_get_maxunit - find the maximum unit number in the class
#include <sys/param.h>
#include <sys/bus.h>
int
devclass_get_maxunit(devclass_t dc);
Returns the next unit number to be allocated to device instances in the
devclass. This is one greater than the highest currently allocated unit.
devclass(9), device(9)
This manual page was written by Doug Rabson.
The name is confusing since it is one greater than the maximum unit.