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SubjectRe: sata_via: write errors on PATA drive connected to VT6421
On Sat, 1 Sep 2007 00:55:21 +0200
Ondrej Zary <linux@rainbow-software.org> wrote:

> Hello,
> I think that I've found and fixed the problem. There is a copy/paste bug in
> vt6421_set_dma_mode() function which causes wrong values to be written to
> PATA_UDMA_TIMING register.
>
>
> This patch fixes a copy/paste bug that breaks DMA modes on VT6421 PATA port.
>
> Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
>
> --- linux-2.6.22.3-orig/drivers/ata/sata_via.c 2007-09-01 00:40:22.000000000 +0200
> +++ linux-2.6.22.3-router2/drivers/ata/sata_via.c 2007-09-01 00:10:40.000000000 +0200
> @@ -370,7 +370,7 @@
> {
> struct pci_dev *pdev = to_pci_dev(ap->host->dev);
> static const u8 udma_bits[] = { 0xEE, 0xE8, 0xE6, 0xE4, 0xE2, 0xE1, 0xE0, 0xE0 };
> - pci_write_config_byte(pdev, PATA_UDMA_TIMING, udma_bits[adev->pio_mode - XFER_UDMA_0]);
> + pci_write_config_byte(pdev, PATA_UDMA_TIMING, udma_bits[adev->dma_mode - XFER_UDMA_0]);
> }
>
> static const unsigned int svia_bar_sizes[] = {

Acked-by: Alan Cox <alan@redhat.com>

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