snd_line6_midi
struct snd_line6_midi *line6midi;
struct snd_line6_midi *midi = line6->line6midi;
((struct snd_line6_midi *)((substream)->rmidi->private_data))
struct snd_line6_midi *line6midi = rmidi->private_data;
struct snd_line6_midi *line6midi;
line6midi = kzalloc_obj(struct snd_line6_midi);
struct snd_line6_midi *line6midi = line6->line6midi;