gdrom: use bdev_check_media_change

The Sega GD-ROM driver does not have a ->revalidate_disk method, so it
can just use bdev_check_media_change without any additional changes.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/cdrom/gdrom.c

@@ -479,7 +479,7 @@ static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
 {
 	int ret;
 
-	check_disk_change(bdev);
+	bdev_check_media_change(bdev);
 
 	mutex_lock(&gdrom_mutex);
 	ret = cdrom_open(gd.cd_info, bdev, mode);