freebsd man page for device_detach

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

NAME
     DEVICE_DETACH -- detach a device

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

     int
     DEVICE_DETACH(device_t dev);

DESCRIPTION
     Detach a device.  This can be called if the user is replacing the driver software or if a device is about to be physically removed from the
     system (e.g. for pccard(4) devices).

     The method should deallocate any system resources allocated during the DEVICE_ATTACH(9) method and reset the hardware to a sane state (i.e.,
     disable interrupts etc.)

RETURN VALUES
     Zero is returned on success, otherwise an appropriate error is returned.

SEE ALSO
     pccard(4), device(9), DEVICE_ATTACH(9), DEVICE_IDENTIFY(9), DEVICE_PROBE(9), DEVICE_SHUTDOWN(9)

AUTHORS
     This manual page was written by Doug Rabson.

BSD
								   June 16, 1998							       BSD