CDROM_BLK_2048
blk_size = CDROM_BLK_2048;
case CDROM_BLK_2048:
buflen = CDROM_BLK_2048 * cdxa->cdxa_length;
blk_size = CDROM_BLK_2048;
(((blksz) == CDROM_BLK_2048) || ((blksz) == CDROM_BLK_2352) || \
(((blksz) == CDROM_BLK_2048) || ((blksz) == CDROM_BLK_2352) || \