rc = cdio_read_audio_sectors( p_cdda->p_cdio, p_block->p_buffer,
p_cdda->i_lsn, i_blocks );
#else
#define DRIVER_OP_SUCCESS 0
rc = cdio_read_audio_sectors( p_cdda->p_cdio, p_block->p_buffer,
p_cdda->i_lsn, i_blocks );
#else
#define DRIVER_OP_SUCCESS 0