DSP_CAP_DUPLEX   1985 sound/core/oss/pcm_oss.c 		res &= ~DSP_CAP_DUPLEX;
DSP_CAP_DUPLEX   2009 sound/core/oss/pcm_oss.c 	result = DSP_CAP_TRIGGER | DSP_CAP_MMAP	| DSP_CAP_DUPLEX | DSP_CAP_REALTIME;
DSP_CAP_DUPLEX   2696 sound/core/oss/pcm_oss.c 		if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX)