diff --git a/drivers/ata/pata_artop.c b/drivers/ata/pata_artop.c
index 96c05c9494fa0ca6be4b7c96ee985761cc0d56b9..6b3355343542e77eeb86f88fb67f8ac06758be86 100644
--- a/drivers/ata/pata_artop.c
+++ b/drivers/ata/pata_artop.c
@@ -242,7 +242,7 @@ static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev)
 
 static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
 {
-	unsigned int pio	= adev->pio_mode - XFER_PIO_0;
+	unsigned int pio;
 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);
 	u8 ultra;