/**
* uif_init - initialize user interfaces for an UBI device.
* @ubi: UBI device description object
* @ref: set to %1 on exit in case of failure if a reference to @ubi->dev was
* taken, otherwise set to %0
*
* This function initializes various user interfaces for an UBI device. If the
* initialization fails at an early stage, this function frees all the
* resources it allocated, returns an error, and @ref is set to %0. However,
* if the initialization fails after the UBI device was registered in the
* driver core subsystem, this function takes a reference to @ubi->dev, because
* otherwise the release function ('dev_release()') would free whole @ubi
* object. The @ref argument is set to %1 in this case. The caller has to put
* this reference.
*
* This function returns zero in case of success and a negative error code in
* case of failure.
*/
static int uif_init(struct ubi_device *ubi, int *ref)
{
int i, err;
*ref = 0;
sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num);
err = ubi_cdev_add(ubi);
if (err) {
ubi_err("cannot add character device");
goto out_unreg;
}
for (i = 0; i < ubi->vtbl_slots; i++)
if (ubi->volumes[i]) {
err = ubi_add_volume(ubi, ubi->volumes[i]);
if (err) {
ubi_err("cannot add volume %d", i);
goto out_volumes;
}
}
return 0;
out_volumes:
kill_volumes(ubi);
devfs_remove(&ubi->cdev);
out_unreg:
ubi_err("cannot initialize UBI %s, error %d", ubi->ubi_name, err);
return err;
}
/**
* uif_init - initialize user interfaces for an UBI device.
* @ubi: UBI device description object
* @ref: set to %1 on exit in case of failure if a reference to @ubi->dev was
* taken, otherwise set to %0
*
* This function initializes various user interfaces for an UBI device. If the
* initialization fails at an early stage, this function frees all the
* resources it allocated, returns an error, and @ref is set to %0. However,
* if the initialization fails after the UBI device was registered in the
* driver core subsystem, this function takes a reference to @ubi->dev, because
* otherwise the release function ('dev_release()') would free whole @ubi
* object. The @ref argument is set to %1 in this case. The caller has to put
* this reference.
*
* This function returns zero in case of success and a negative error code in
* case of failure.
*/
static int uif_init(struct ubi_device *ubi, int *ref)
{
int i, err;
*ref = 0;
sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num);
sprintf(ubi->dev.name, "ubi");
ubi->dev.id = DEVICE_ID_DYNAMIC;
ubi->dev.parent = &ubi->mtd->class_dev;
err = register_device(&ubi->dev);
if (err)
goto out_unreg;
err = ubi_cdev_add(ubi);
if (err) {
ubi_err("cannot add character device");
goto out_dev;
}
for (i = 0; i < ubi->vtbl_slots; i++)
if (ubi->volumes[i]) {
err = ubi_add_volume(ubi, ubi->volumes[i]);
if (err) {
ubi_err("cannot add volume %d", i);
goto out_volumes;
}
}
return 0;
out_volumes:
kill_volumes(ubi);
devfs_remove(&ubi->cdev);
out_dev:
unregister_device(&ubi->dev);
out_unreg:
ubi_err("cannot initialize UBI %s, error %d", ubi->ubi_name, err);
return err;
}