NAME
config_attach,
config_detach,
config_detach_children —
attach and detach devices
SYNOPSIS
#include
<sys/param.h>
#include <sys/device.h>
struct device *
config_attach(struct
device *parent, void
*cf, void *aux,
cfprint_t print);
int
config_detach(struct
device *dev, int
flags);
int
config_detach_children(struct
device *parent, int
flags);
DESCRIPTION
Theconfig_attach()
function attaches a found device. Memory is allocated for the
softc structure and the driver's attach function is called
according to the configuration table. If successful,
config_attach() returns the softc.
If unsuccessful, it returns NULL.
The
config_detach()
function is called by the parent to detach the child device. The second
argument flags contains detachment flags:
#define DETACH_FORCE 0x01 /* Force detachment; hardware gone */ #define DETACH_QUIET 0x02 /* Don't print a notice */
CONTEXT
config_detach() is always called from
process context, allowing tsleep(9) to be called while the device detaches itself (to
deal with processes which have a device open).
RETURN VALUES
config_detach() returns zero if successful
and an error code otherwise.