ATA_LFLAG_SW_ACTIVITY
.link_flags = ATA_LFLAG_SW_ACTIVITY,
if (!(link->flags & ATA_LFLAG_SW_ACTIVITY))
link->flags |= ATA_LFLAG_SW_ACTIVITY;
link->flags &= ~(ATA_LFLAG_SW_ACTIVITY);
link->flags |= ATA_LFLAG_SW_ACTIVITY;