SKD_MUTEX_DESTROYED
if (skdev->flags & SKD_MUTEX_DESTROYED)
skdev->flags &= ~SKD_MUTEX_DESTROYED;
if ((skdev->flags & SKD_MUTEX_DESTROYED) == 0) {
skdev->flags |= SKD_MUTEX_DESTROYED;
if ((skdev->flags & SKD_MUTEX_DESTROYED) == 0) {
if ((skdev->flags & SKD_MUTEX_DESTROYED) == 0) {