sys/dev/audio.c

112  * - sc_dvlock, private to this module.  This is a custom reader/writer lock
115  *   complete, to copy to/from user context, etc.  sc_dvlock serializes
1190 		while (__predict_false(sc->sc_dvlock != 0)) {
1193 		sc->sc_dvlock = -1;
1196 		while (__predict_false(sc->sc_dvlock < 0)) {
1199 		sc->sc_dvlock++;
1217 	KASSERT(sc->sc_dvlock != 0);
1220 	if (__predict_false(sc->sc_dvlock < 0)) {
1221 		sc->sc_dvlock = 0;
1223 		sc->sc_dvlock--;
1241 	if (__predict_false(sc->sc_dvlock < 0)) {
1242 		sc->sc_dvlock = 0;
1245 		KASSERT(sc->sc_dvlock > 0);
1246 		sc->sc_dvlock--;
1256 		while (__predict_false(sc->sc_dvlock != 0)) {
1259 		sc->sc_dvlock = -1;
1261 		while (__predict_false(sc->sc_dvlock < 0)) {
1264 		sc->sc_dvlock++;
2689 	KASSERT(sc->sc_dvlock > 0);