ALSA_PLAYBACK_OPEN 693 sound/usb/misc/ua101.c set_bit(ALSA_PLAYBACK_OPEN, &ua->states); ALSA_PLAYBACK_OPEN 705 sound/usb/misc/ua101.c if (!test_bit(ALSA_PLAYBACK_OPEN, &ua->states)) ALSA_PLAYBACK_OPEN 717 sound/usb/misc/ua101.c clear_bit(ALSA_PLAYBACK_OPEN, &ua->states);