diff --git a/drivers/ata/pata_cs5520.c b/drivers/ata/pata_cs5520.c
index 0df83cf74233..95ebdac517f2 100644
--- a/drivers/ata/pata_cs5520.c
+++ b/drivers/ata/pata_cs5520.c
@@ -89,49 +89,13 @@ static void cs5520_set_timings(struct ata_port *ap, struct ata_device *adev, int
 				(cs5520_pio_clocks[pio].assert));
 }
 
-/**
- *	cs5520_enable_dma	-	turn on DMA bits
- *
- *	Turn on the DMA bits for this disk. Needed because the BIOS probably
- *	has not done the work for us. Belongs in the core SATA code.
- */
-
-static void cs5520_enable_dma(struct ata_port *ap, struct ata_device *adev)
-{
-	/* Set the DMA enable/disable flag */
-	u8 reg = ioread8(ap->ioaddr.bmdma_addr + 0x02);
-	reg |= 1<<(adev->devno + 5);
-	iowrite8(reg, ap->ioaddr.bmdma_addr + 0x02);
-}
-
-/**
- *	cs5520_set_dmamode	-	program DMA timings
- *	@ap: ATA port
- *	@adev: ATA device
- *
- *	Program the DMA mode timings for the controller according to the pio
- *	clocking table. Note that this device sets the DMA timings to PIO
- *	mode values. This may seem bizarre but the 5520 architecture talks
- *	PIO mode to the disk and DMA mode to the controller so the underlying
- *	transfers are PIO timed.
- */
-
-static void cs5520_set_dmamode(struct ata_port *ap, struct ata_device *adev)
-{
-	static const int dma_xlate[3] = { XFER_PIO_0, XFER_PIO_3, XFER_PIO_4 };
-	cs5520_set_timings(ap, adev, dma_xlate[adev->dma_mode]);
-	cs5520_enable_dma(ap, adev);
-}
-
 /**
  *	cs5520_set_piomode	-	program PIO timings
  *	@ap: ATA port
  *	@adev: ATA device
  *
  *	Program the PIO mode timings for the controller according to the pio
- *	clocking table. We know pio_mode will equal dma_mode because of the
- *	CS5520 architecture. At least once we turned DMA on and wrote a
- *	mode setter.
+ *	clocking table.
  */
 
 static void cs5520_set_piomode(struct ata_port *ap, struct ata_device *adev)
@@ -149,7 +113,6 @@ static struct ata_port_operations cs5520_port_ops = {
 	.qc_prep		= ata_sff_dumb_qc_prep,
 	.cable_detect		= ata_cable_40wire,
 	.set_piomode		= cs5520_set_piomode,
-	.set_dmamode		= cs5520_set_dmamode,
 };
 
 static int __devinit cs5520_init_one(struct pci_dev *pdev, const struct pci_device_id *id)