ES_SINGLE_PCM_MIX
set = ES_SINGLE_PCM_MIX(es->escfg);
if (ES_SINGLE_PCM_MIX(es->escfg))
if (ES_SINGLE_PCM_MIX(es->escfg)) /* ditto */
if (dev == SOUND_MIXER_PCM && (ES_SINGLE_PCM_MIX(es->escfg)) &&
if ((src & (1 << SOUND_MIXER_PCM)) && ES_SINGLE_PCM_MIX(es->escfg) &&