On Mon, Jan 15, 2007 at 11:26:59AM -0500, Dailey, Nate wrote:
> Here's a patch that does what you suggest.
>
> Because the default cache line size on my system is 0x10, I tested the
> patch by checking against this value rather than 0... it worked as
> expected.
>
> This patch is against 2.6.19.2 that I just downloaded from kernel.org. I
> actually tested on RHEL4 update 4, a 2.6.9 kernel, but I'll try building
> the 2.6.19.2 on my system to make sure it works in that version as well.
>
> Nate
Hi Nate,
The patch looks fine, except that your mailer wrapped the lines.
Try sending it as a text attachment instead.
Thanks
jeremy
>
> --- sata_vsc.c.orig 2007-01-15 11:06:17.000000000 -0500
> +++ sata_vsc.c 2007-01-15 11:10:29.000000000 -0500
> @@ -340,6 +340,7 @@ static int __devinit vsc_sata_init_one (
> int pci_dev_busy = 0;
> void __iomem *mmio_base;
> int rc;
> + u8 cls;
>
> if (!printed_version++)
> dev_printk(KERN_DEBUG, &pdev->dev, "version "
> DRV_VERSION "\n");
> @@ -389,9 +390,13 @@ static int __devinit vsc_sata_init_one (
> base = (unsigned long) mmio_base;
>
> /*
> - * Due to a bug in the chip, the default cache line size can't
> be used
> + * Due to a bug in the chip, the default cache line size can't
> be
> + * used (unless the default is non-zero).
> */
> - pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x80);
> + pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cls);
> + if (cls == 0x00) {
> + pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x80);
> + }
>
> probe_ent->sht = &vsc_sata_sht;
> probe_ent->port_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
-
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