Re: [Linux-ia64] PCI_BUSES_TO_SCAN off by 1?

From: Bjorn Helgaas <>
Date: 2002-10-23 08:20:52
On Friday 30 August 2002 3:11 pm, Bjorn Helgaas wrote:
> Along this line, I had been hoping that if we find any PCI root
> bridges via ACPI, we could skip the blind scanning of buses 0-255.

To complete this thread, it looks like we can't do this.  My
i2000 reports PCI root bridges for buses 0, 1, 2, and 3 via
ACPI.  The 460GX chipset, including the CSRs for the AGP
bridge, appears in config space on PCI bus 4.  ACPI doesn't
tell us about bus 4, so we have to do the blind scan to find
that stuff.

Received on Tue Oct 22 15:21:05 2002

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