linux-kernel - Re: sata_via: write errors on PATA drive connected to VT6421

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Message-ID: <20070901001906.16c4db60@the-village.bc.nu>
Date:	Sat, 1 Sep 2007 00:19:06 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Ondrej Zary <linux@...nbow-software.org>
Cc:	jgarzik@...ox.com, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: sata_via: write errors on PATA drive connected to VT6421

On Sat, 1 Sep 2007 00:55:21 +0200
Ondrej Zary <linux@...nbow-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@...nbow-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@...hat.com>

-
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