target/linux/ixp4xx/patches/998-VT6421.patch

   1 I think that I've found and fixed the problem. There is a copy/paste bug in
   2 vt6421_set_dma_mode() function which causes wrong values to be written to
   3 PATA_UDMA_TIMING register.
   4
   5
   6 This patch fixes a copy/paste bug that breaks DMA modes on VT6421 PATA port.
   7
   8 Signed-off-by: Ondrej Zary <linux@rain...>
   9 Index: linux-2.6.21.7/drivers/ata/sata_via.c
  10 ===================================================================
  11 --- linux-2.6.21.7.orig/drivers/ata/sata_via.c
  12 +++ linux-2.6.21.7/drivers/ata/sata_via.c
  13 @@ -380,7 +380,7 @@ static void vt6421_set_dma_mode(struct a
  14  {
  15         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
  16         static const u8 udma_bits[] = { 0xEE, 0xE8, 0xE6, 0xE4, 0xE2, 0xE1, 0xE0, 0xE0 };
  17 -       pci_write_config_byte(pdev, PATA_UDMA_TIMING, udma_bits[adev->pio_mode - XFER_UDMA_0]);
  18 +       pci_write_config_byte(pdev, PATA_UDMA_TIMING, udma_bits[adev->dma_mode - XFER_UDMA_0]);
  19  }
  20
  21  static int vt6421_port_start(struct ata_port *ap)