snd_pcm_f_ops     530 include/sound/pcm.h extern const struct file_operations snd_pcm_f_ops[2];
snd_pcm_f_ops    1068 sound/core/pcm.c 					  &snd_pcm_f_ops[cidx], pcm,
snd_pcm_f_ops    3705 sound/core/pcm_native.c const struct file_operations snd_pcm_f_ops[2] = {