Symbol: ZS_OFF
usr/src/uts/sun/io/zs_async.c
1088
(void) zsmctl(zs, ZS_OFF, DMSET);
usr/src/uts/sun/io/zs_async.c
2984
(void) zsmctl(zs, ZS_OFF, DMSET);
usr/src/uts/sun/io/zs_async.c
695
(void) zsmctl(zs, ZS_OFF, DMSET); /* drop dtr */