Re: [PATCH 5/4] scsi: remove MSG_*_TAG defines

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On 11/24/14 16:07, Christoph Hellwig wrote:
index 6719a33..2c5ce48 100644
--- a/drivers/scsi/advansys.c
+++ b/drivers/scsi/advansys.c
@@ -7921,9 +7921,9 @@ static int asc_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
  	 */
  	if ((asc_dvc->cur_dvc_qng[scp->device->id] > 0) &&
  	    (boardp->reqcnt[scp->device->id] % 255) == 0) {
-		asc_scsi_q->q2.tag_code = MSG_ORDERED_TAG;
+		asc_scsi_q->q2.tag_code = ORDERED_QUEUE_TAG;
  	} else {
-		asc_scsi_q->q2.tag_code = MSG_SIMPLE_TAG;
+		asc_scsi_q->q2.tag_code = SIMPLE_QUEUE_TAG;
  	}

  	/* Build ASC_SCSI_Q */
@@ -8351,7 +8351,7 @@ static int AscPutReadyQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq, uchar q_no)
  	}
  	q_addr = ASC_QNO_TO_QADDR(q_no);
  	if ((scsiq->q1.target_id & asc_dvc->use_tagged_qng) == 0) {
-		scsiq->q2.tag_code &= ~MSG_SIMPLE_TAG;
+		scsiq->q2.tag_code &= ~SIMPLE_QUEUE_TAG;
  	}
  	scsiq->q1.status = QS_FREE;
  	AscMemWordCopyPtrToLram(iop_base,
@@ -8669,7 +8669,7 @@ static int AscExeScsiQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq)
  		}
  	}
  	if (disable_syn_offset_one_fix) {
-		scsiq->q2.tag_code &= ~MSG_SIMPLE_TAG;
+		scsiq->q2.tag_code &= ~SIMPLE_QUEUE_TAG;
  		scsiq->q2.tag_code |= (ASC_TAG_FLAG_DISABLE_ASYN_USE_SYN_FIX |
  				       ASC_TAG_FLAG_DISABLE_DISCONNECT);
  	} else {

One of the statements in advansys.c (tag_code &= 0xDC) makes assumptions about the numeric value of MSG_SIMPLE_TAG. This makes me wonder whether it is safe to change MSG_SIMPLE_TAG into another value ?

Bart.
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