On Thu, Jul 26, 2007 at 03:43:39PM -0400, Jeff Garzik wrote:
> >+static void __devinit advansys_set_latency(struct pci_dev *pdev)
> >+{
> >+ if ((pdev->device == PCI_DEVICE_ID_ASP_1200A) ||
> >+ (pdev->device == PCI_DEVICE_ID_ASP_ABP940)) {
> >+ pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0);
> >+ } else {
> >+ u8 latency;
> >+ pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency);
> >+ if (latency < 0x20)
> >+ pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x20);
> >+ }
>
> the latter branch is useless -- pci_set_master() ensures
> PCI_LATENCY_TIMER is adequate
i386 certainly has a workaround for broken BIOSes, but this looks to
me like it's working around an issue the card has with a latency timer
below 32. Note that i386's implementation of pcibios_set_master()
only ensures that the latency timer is 16 or higher.
--
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
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