cdrom_cdda
struct cdrom_cdda *cdda;
cdda = kmem_zalloc(sizeof (struct cdrom_cdda), KM_SLEEP);
kmem_free(cdda, sizeof (struct cdrom_cdda));
if (ddi_copyin(data, cdda, sizeof (struct cdrom_cdda), flag)) {
kmem_free(cdda, sizeof (struct cdrom_cdda));
if (ddi_copyin(data, cdda, sizeof (struct cdrom_cdda), flag)) {
kmem_free(cdda, sizeof (struct cdrom_cdda));
kmem_free(cdda, sizeof (struct cdrom_cdda));
kmem_free(cdda, sizeof (struct cdrom_cdda));
kmem_free(cdda, sizeof (struct cdrom_cdda));
kmem_free(cdda, sizeof (struct cdrom_cdda));