351 static bool isValid(Callback descriptor) {  in isValid()  function
363     if (!isValid(descriptor)) {  in registerCallback()
425     bool isValid = displaysValue[0] != '\0';  in getVsyncPeriodFromProperty()  local
427     if (!isValid) return 60;  in getVsyncPeriodFromProperty()
980 static bool isValid(PowerMode mode) {  in isValid()  function
994     if (!isValid(mode)) {  in setPowerMode()
1008 static bool isValid(Vsync enable) {  in isValid()  function
1019     if (!isValid(enable)) {  in setVsyncEnabled()
1657     bool isValid = displaysValue[0] != '\0';  in populateSecondaryDisplays()  local
1658     if (isValid) {  in populateSecondaryDisplays()
1662                 isValid = false;  in populateSecondaryDisplays()
1667         if (!isValid) {  in populateSecondaryDisplays()
1671     if (!isValid) {  in populateSecondaryDisplays()