diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c
index bccedf9b8b28..b89e81656875 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -133,7 +133,7 @@ static void cs5520_tune_drive(ide_drive_t *drive, u8 pio)
 static int cs5520_config_drive_xfer_rate(ide_drive_t *drive)
 {
 	/* Tune the drive for PIO modes up to PIO 4 */	
-	cs5520_tune_drive(drive, 4);
+	cs5520_tune_drive(drive, 255);
 
 	/* Then tell the core to use DMA operations */
 	return 0;