1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ata/pata_it8213.c b/drivers/ata/pata_it8213.c
index f0bf77ad371f..bcc190a1c426 100644
--- a/drivers/ata/pata_it8213.c
+++ b/drivers/ata/pata_it8213.c
@@ -210,7 +210,7 @@ static void it8213_set_dmamode (struct ata_port *ap, struct ata_device *adev)
                         master_data &= 0xFF4F;  /* Mask out IORDY|TIME1|DMAONLY */
                         master_data |= control << 4;
                         pci_read_config_byte(dev, 0x44, &slave_data);
-                        slave_data &= (0x0F + 0xE1 * ap->port_no);
+                        slave_data &= 0xF0;
                         /* Load the matching timing */
                         slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
                         pci_write_config_byte(dev, 0x44, slave_data);