ide: remove ide_{,un}register_region

There is no need to ever register the fake gendisk used for ide-tape.

Signed-off-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Hannes Reinecke <[e-mail]>
Signed-off-by: Jens Axboe <[e-mail]>

drivers/ide/ide-probe.c

···
 	return NULL;
 }
 
-static struct kobject *exact_match(dev_t dev, int *part, void *data)
-{
-	struct gendisk *p = data;
-	*part &= (1 << PARTN_BITS) - 1;
-	return &disk_to_dev(p)->kobj;
-}
-
-static int exact_lock(dev_t dev, void *data)
-{
-	struct gendisk *p = data;
-
-	if (!get_disk_and_module(p))
-		return -1;
-	return 0;
-}
-
-void ide_register_region(struct gendisk *disk)
-{
-	blk_register_region(MKDEV(disk->major, disk->first_minor),
-			    disk->minors, NULL, exact_match, exact_lock, disk);
-}
-
-EXPORT_SYMBOL_GPL(ide_register_region);
-
-void ide_unregister_region(struct gendisk *disk)
-{
-	blk_unregister_region(MKDEV(disk->major, disk->first_minor),
-			      disk->minors);
-}
-
-EXPORT_SYMBOL_GPL(ide_unregister_region);
-
 void ide_init_disk(struct gendisk *disk, ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;

drivers/ide/ide-tape.c

···
 
 	ide_proc_unregister_driver(drive, tape->driver);
 	device_del(&tape->dev);
-	ide_unregister_region(tape->disk);
 
 	mutex_lock(&idetape_ref_mutex);
 	put_device(&tape->dev);
···
 		      "n%s", tape->name);
 
 	g->fops = &idetape_block_ops;
-	ide_register_region(g);
 
 	return 0;
 

include/linux/ide.h

···
 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
 #endif
 
-void ide_register_region(struct gendisk *);
-void ide_unregister_region(struct gendisk *);
-
 void ide_check_nien_quirk_list(ide_drive_t *);
 void ide_undecoded_slave(ide_drive_t *);