MAX_PCM_SUBSTREAMS   37 sound/drivers/aloop.c #define MAX_PCM_SUBSTREAMS	8
MAX_PCM_SUBSTREAMS   31 sound/drivers/dummy.c #define MAX_PCM_SUBSTREAMS	128
MAX_PCM_SUBSTREAMS   59 sound/parisc/harmony.h #define MAX_PCM_SUBSTREAMS  4