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[v3,25/31] scsi: libsas: Simplify sas_ata_qc_issue() detection of NCQ commands

Message ID 20220214021747.4976-26-damien.lemoal@opensource.wdc.com (mailing list archive)
State Superseded
Headers show
Series libsas and pm8001 fixes | expand

Commit Message

Damien Le Moal Feb. 14, 2022, 2:17 a.m. UTC 
To detect if a command is NCQ, there is no need to test all possible NCQ
command codes. Instead, use ata_is_ncq() to test the command protocol.

Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
---
 drivers/scsi/libsas/sas_ata.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)
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Patch

diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 50f779088b6e..fcfc8fd4b14f 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -181,14 +181,9 @@  static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
 	task->task_proto = SAS_PROTOCOL_STP;
 	task->task_done = sas_ata_task_done;
 
-	if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
-	    qc->tf.command == ATA_CMD_FPDMA_READ ||
-	    qc->tf.command == ATA_CMD_FPDMA_RECV ||
-	    qc->tf.command == ATA_CMD_FPDMA_SEND ||
-	    qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
-		/* Need to zero out the tag libata assigned us */
+	/* For NCQ commands, zero out the tag libata assigned us */
+	if (ata_is_ncq(qc->tf.protocol))
 		qc->tf.nsect = 0;
-	}
 
 	ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8 *)&task->ata_task.fis);
 	task->uldd_task = qc;