libata: use ata_is_ncq() accessors

Use accessor functions instead of the raw value.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 077daf0d..f5eb07e 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4842,7 +4842,7 @@
 {
 	struct ata_link *link = qc->dev->link;
 
-	if (qc->tf.protocol == ATA_PROT_NCQ) {
+	if (ata_is_ncq(qc->tf.protocol)) {
 		if (!ata_tag_valid(link->active_tag))
 			return 0;
 	} else {
@@ -5007,7 +5007,7 @@
 		ata_sg_clean(qc);
 
 	/* command should be marked inactive atomically with qc completion */
-	if (qc->tf.protocol == ATA_PROT_NCQ) {
+	if (ata_is_ncq(qc->tf.protocol)) {
 		link->sactive &= ~(1 << qc->tag);
 		if (!link->sactive)
 			ap->nr_active_links--;