static int snd_opl3_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure);
static int snd_opl3_close_seq_oss(snd_seq_oss_arg_t *arg);
static int snd_opl3_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg);
static int snd_opl3_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure);
static int snd_opl3_close_seq_oss(snd_seq_oss_arg_t *arg);
static int snd_opl3_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg);