FRAME_DUMP_FILE_OPEN
if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) {
clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags);