drivers/scsi/sr.c

8  *      Linux scsi disk driver by
140 static inline struct scsi_cd *scsi_cd(struct gendisk *disk)
142 	return disk->private_data;
302 	struct scsi_cd *cd = scsi_cd(rq->q->disk);
342 			if (error_sector < get_capacity(cd->disk) &&
344 				set_capacity(cd->disk, error_sector);
369 	cd = scsi_cd(rq->q->disk);
487 static int sr_block_open(struct gendisk *disk, blk_mode_t mode)
489 	struct scsi_cd *cd = scsi_cd(disk);
497 	if (disk_check_media_change(disk))
510 static void sr_block_release(struct gendisk *disk)
512 	struct scsi_cd *cd = scsi_cd(disk);
555 static unsigned int sr_block_check_events(struct gendisk *disk,
558 	struct scsi_cd *cd = disk->private_data;
565 static void sr_free_disk(struct gendisk *disk)
567 	struct scsi_cd *cd = disk->private_data;
570 	clear_bit(MINOR(disk_devt(disk)), sr_index_bits);
611 	struct gendisk *disk;
625 	disk = blk_mq_alloc_disk_for_queue(sdev->request_queue,
627 	if (!disk)
641 	disk->major = SCSI_CDROM_MAJOR;
642 	disk->first_minor = minor;
643 	disk->minors = 1;
644 	sprintf(disk->disk_name, "sr%d", minor);
645 	disk->fops = &sr_bdops;
646 	disk->flags |= GENHD_FL_REMOVABLE | GENHD_FL_NO_PART;
647 	disk->events = DISK_EVENT_MEDIA_CHANGE | DISK_EVENT_EJECT_REQUEST;
648 	disk->event_flags = DISK_EVENT_FLAG_POLL | DISK_EVENT_FLAG_UEVENT |
654 	cd->disk = disk;
675 	set_capacity(disk, cd->capacity);
676 	disk->private_data = cd;
678 	if (register_cdrom(disk, &cd->cdi))
690 	error = device_add_disk(&sdev->sdev_gendev, disk, NULL);
707 	put_disk(disk);
789 		set_capacity(cd->disk, cd->capacity);
929 	struct gendisk *disk = cdi->disk;
936 	rq = scsi_alloc_request(disk->queue, REQ_OP_DRV_IN, 0);
941 	ret = blk_rq_map_user(disk->queue, rq, NULL, ubuf, len, GFP_KERNEL);
982 	del_gendisk(cd->disk);
983 	put_disk(cd->disk);