#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_ATTACH9
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.
