static int ide_gd_probe(ide_drive_t *drive) { const struct ide_disk_ops *disk_ops = NULL; struct ide_disk_obj *idkp; struct gendisk *g; /* strstr("foo", "") is non-NULL */ if (!strstr("ide-gd", drive->driver_req)) goto failed; #ifdef CONFIG_IDE_GD_ATA if (drive->media == ide_disk) disk_ops = &ide_ata_disk_ops; #endif #ifdef CONFIG_IDE_GD_ATAPI if (drive->media == ide_floppy) disk_ops = &ide_atapi_disk_ops; #endif if (disk_ops == NULL) goto failed; if (disk_ops->check(drive, DRV_NAME) == 0) { printk(KERN_ERR PFX "%s: not supported by this driver\n", drive->name); goto failed; } idkp = kzalloc(sizeof(*idkp), GFP_KERNEL); if (!idkp) { printk(KERN_ERR PFX "%s: can't allocate a disk structure\n", drive->name); goto failed; } g = alloc_disk_node(IDE_DISK_MINORS, hwif_to_node(drive->hwif)); if (!g) goto out_free_idkp; ide_init_disk(g, drive); kref_init(&idkp->kref); idkp->drive = drive; idkp->driver = &ide_gd_driver; idkp->disk = g; g->private_data = &idkp->driver; drive->driver_data = idkp; drive->debug_mask = debug_mask; drive->disk_ops = disk_ops; disk_ops->setup(drive); set_capacity(g, ide_gd_capacity(drive)); g->minors = IDE_DISK_MINORS; g->driverfs_dev = &drive->gendev; g->flags |= GENHD_FL_EXT_DEVT; if (drive->dev_flags & IDE_DFLAG_REMOVABLE) g->flags = GENHD_FL_REMOVABLE; g->fops = &ide_gd_ops; add_disk(g); return 0; out_free_idkp: kfree(idkp); failed: return -ENODEV; }
static int ide_scsi_probe(ide_drive_t *drive) { idescsi_scsi_t *idescsi; struct Scsi_Host *host; struct gendisk *g; static int warned; int err = -ENOMEM; if (!warned && drive->media == ide_cdrom) { printk(KERN_WARNING "ide-scsi is deprecated for cd burning! Use ide-cd and give dev=/dev/hdX as device\n"); warned = 1; } if (idescsi_nocd && drive->media == ide_cdrom) return -ENODEV; if (!strstr("ide-scsi", drive->driver_req) || !drive->present || drive->media == ide_disk || !(host = scsi_host_alloc(&idescsi_template,sizeof(idescsi_scsi_t)))) return -ENODEV; drive->scsi = 1; g = alloc_disk(1 << PARTN_BITS); if (!g) goto out_host_put; ide_init_disk(g, drive); host->max_id = 1; if (drive->id->last_lun) debug_log("%s: id->last_lun=%u\n", drive->name, drive->id->last_lun); if ((drive->id->last_lun & 0x7) != 7) host->max_lun = (drive->id->last_lun & 0x7) + 1; else host->max_lun = 1; drive->driver_data = host; idescsi = scsihost_to_idescsi(host); idescsi->drive = drive; idescsi->driver = &idescsi_driver; idescsi->host = host; idescsi->disk = g; g->private_data = &idescsi->driver; ide_proc_register_driver(drive, &idescsi_driver); err = 0; idescsi_setup(drive, idescsi); g->fops = &idescsi_ops; ide_register_region(g); err = scsi_add_host(host, &drive->gendev); if (!err) { scsi_scan_host(host); return 0; } /* fall through on error */ ide_unregister_region(g); ide_proc_unregister_driver(drive, &idescsi_driver); put_disk(g); out_host_put: drive->scsi = 0; scsi_host_put(host); return err; }