switch (scb->xs->cmd->opcode) { case INQUIRY: case TEST_UNIT_READY: case REQUEST_SENSE:  enabled = 0; break; default: break; }  if (enabled) scb->hscb->control |= TAG_ENB; else scb->hscb->control &= ~TAG_ENB;
void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type){	/*	 * Assume that enabled == 0, or tstate->tagenable has already	 * been checked and found to be set.	 */	switch (scb->xs->cmd->opcode) {	case INQUIRY:	case TEST_UNIT_READY:	case REQUEST_SENSE:		/* Don't use tagged i/o on these commands. */		enabled = 0;		break;	default:		break;	}	if (enabled)		scb->hscb->control |= TAG_ENB;	else		scb->hscb->control &= ~TAG_ENB;}