table of contents
DEVCLASS_GET_MAXUNIT(9) | Kernel Developer's Manual | DEVCLASS_GET_MAXUNIT(9) |
NAME¶
devclass_get_maxunit
—
find the maximum unit number in the class
SYNOPSIS¶
#include <sys/param.h>
#include <sys/bus.h>
int
devclass_get_maxunit
(devclass_t
dc);
DESCRIPTION¶
Returns the next unit number to be allocated to device instances in thedevclass
. This is one greater than the highest
currently allocated unit.
RETURN VALUES¶
Thedevclass_get_maxunit
() function returns -1 if
dc is NULL
, otherwise it returns
the next unit number in dc's devclass.
ERRORS¶
None.SEE ALSO¶
devclass(9), device(9)AUTHORS¶
This manual page was written by Doug Rabson.BUGS¶
The name is confusing since it is one greater than the maximum unit.September 10, 2010 | Linux 4.19.0-10-amd64 |