diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index a61af3818c847fd55a798e194a024562158bb597..17c5d48a75d2f14f048b39ad751ae757ca9ceaed 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1656,8 +1656,8 @@ unsigned long ata_id_xfermask(const u16 *id)
 		/*
 		 *	Process compact flash extended modes
 		 */
-		int pio = id[163] & 0x7;
-		int dma = (id[163] >> 3) & 7;
+		int pio = (id[ATA_ID_CFA_MODES] >> 0) & 0x7;
+		int dma = (id[ATA_ID_CFA_MODES] >> 3) & 0x7;
 
 		if (pio)
 			pio_mask |= (1 << 5);
@@ -2426,7 +2426,8 @@ int ata_dev_configure(struct ata_device *dev)
 	/* ATA-specific feature tests */
 	if (dev->class == ATA_DEV_ATA) {
 		if (ata_id_is_cfa(id)) {
-			if (id[162] & 1) /* CPRM may make this media unusable */
+			/* CPRM may make this media unusable */
+			if (id[ATA_ID_CFA_KEY_MGMT] & 1)
 				ata_dev_printk(dev, KERN_WARNING,
 					       "supports DRM functions and may "
 					       "not be fully accessable.\n");