DMAF_PCFLUSH
if (dc->dm_flags & DMAF_PCFLUSH) {
dc->dm_flags &= ~DMAF_PCFLUSH;
dc->dm_flags |= DMAF_PCFLUSH;
dc->dm_flags |= DMAF_PCFLUSH;
if (dc->dm_flags & DMAF_PCFLUSH) {
dc->dm_flags &= ~DMAF_PCFLUSH;