AMIXER_PCM_S 972 sound/pci/ctxfi/ctmixer.c for (i = AMIXER_PCM_F, k = SUM_IN_F; i <= AMIXER_PCM_S; i++, k++) { AMIXER_PCM_S 1069 sound/pci/ctxfi/ctmixer.c case MIX_PCMI_SURROUND: return AMIXER_PCM_S;