1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ata/pata_mpiix.c b/drivers/ata/pata_mpiix.c
index aa576cac4d17..b21f0021f54a 100644
--- a/drivers/ata/pata_mpiix.c
+++ b/drivers/ata/pata_mpiix.c
@@ -200,7 +200,7 @@ static int mpiix_init_one(struct pci_dev *dev, const struct pci_device_id *id)
            the MPIIX your box goes castors up */
 
         ap->ops = &mpiix_port_ops;
-        ap->pio_mask = 0x1F;
+        ap->pio_mask = ATA_PIO4;
         ap->flags |= ATA_FLAG_SLAVE_POSS;
 
         ap->ioaddr.cmd_addr = cmd_addr;