SNDRV_GF1_MIN_VOLUME  151 include/sound/gus.h #define SNDRV_GF1_MIN_OFFSET	(SNDRV_GF1_MIN_VOLUME>>4)
SNDRV_GF1_MIN_VOLUME  148 sound/isa/gus/gus_pcm.c 		snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);