diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index e2796fb40eb7eb7765060262f77a8d54763a051c..32cfaa89dc7ce2462d7c4a4f7915c2c4a6ff6cb6 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -431,7 +431,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 
 	/* Generic, PCI class code for AHCI */
 	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
-	  0x010601, 0xffffff, board_ahci },
+	  PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
 
 	{ }	/* terminate list */
 };
@@ -1619,11 +1619,11 @@ static void ahci_print_info(struct ata_probe_ent *probe_ent)
 		speed_s = "?";
 
 	pci_read_config_word(pdev, 0x0a, &cc);
-	if (cc == 0x0101)
+	if (cc == PCI_CLASS_STORAGE_IDE)
 		scc_s = "IDE";
-	else if (cc == 0x0106)
+	else if (cc == PCI_CLASS_STORAGE_SATA)
 		scc_s = "SATA";
-	else if (cc == 0x0104)
+	else if (cc == PCI_CLASS_STORAGE_RAID)
 		scc_s = "RAID";
 	else
 		scc_s = "unknown";
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 11217bda4b9ef1c98003bd50f16d92a90c42db39..1e6eda25c0d82c800cf260a832209ee70899d9b7 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -871,7 +871,7 @@ static void __devinit quirk_sb600_sata(struct pci_dev *pdev)
 		pci_write_config_byte(pdev, 0xa, 6);
 		pci_write_config_byte(pdev, 0x40, tmp);
 
-		pdev->class = 0x010601;
+		pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
 	}
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_sb600_sata);
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 4c8966a082af11da95a8469afcc9917a0931f6f6..e67b68ca235a45181eb4769f6fb8adbea05910e5 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -15,6 +15,8 @@
 #define PCI_CLASS_STORAGE_FLOPPY	0x0102
 #define PCI_CLASS_STORAGE_IPI		0x0103
 #define PCI_CLASS_STORAGE_RAID		0x0104
+#define PCI_CLASS_STORAGE_SATA		0x0106
+#define PCI_CLASS_STORAGE_SATA_AHCI	0x010601
 #define PCI_CLASS_STORAGE_SAS		0x0107
 #define PCI_CLASS_STORAGE_OTHER		0x0180