diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 72e38e6..9327b62 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -101,7 +101,7 @@
 	ICH5_PCS		= 0x92,	/* port control and status */
 	PIIX_SCC		= 0x0A, /* sub-class code register */
 
-	PIIX_FLAG_IGN_PRESENT	= (1 << 25), /* ignore PCS present bits */
+	PIIX_FLAG_IGNORE_PCS	= (1 << 25), /* ignore PCS present bits */
 	PIIX_FLAG_SCR		= (1 << 26), /* SCR available */
 	PIIX_FLAG_AHCI		= (1 << 27), /* AHCI possible */
 	PIIX_FLAG_CHECKINTR	= (1 << 28), /* make sure PCI INTx enabled */
@@ -365,7 +365,7 @@
 	{
 		.sht		= &piix_sht,
 		.host_flags	= ATA_FLAG_SATA | PIIX_FLAG_COMBINED |
-				  PIIX_FLAG_CHECKINTR | PIIX_FLAG_IGN_PRESENT,
+				  PIIX_FLAG_CHECKINTR | PIIX_FLAG_IGNORE_PCS,
 		.pio_mask	= 0x1f,	/* pio0-4 */
 		.mwdma_mask	= 0x07, /* mwdma0-2 */
 		.udma_mask	= 0x7f,	/* udma0-6 */
@@ -538,7 +538,7 @@
 		port = map[base + i];
 		if (port < 0)
 			continue;
-		if (ap->flags & PIIX_FLAG_IGN_PRESENT || pcs & 1 << (4 + port))
+		if (ap->flags & PIIX_FLAG_IGNORE_PCS || pcs & 1 << (4 + port))
 			present_mask |= 1 << i;
 		else
 			pcs &= ~(1 << port);