linux-kernel - PCI: Bus #05 (-#08) is hidden behind transparent bridge #02

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Date:	Sat, 13 Jan 2007 12:51:39 +0100
From:	Marc Haber <mh+linux-kernel@...schlus.de>
To:	linux-kernel@...r.kernel.org
Subject: PCI: Bus #05 (-#08) is hidden behind transparent bridge #02

Hi,

when booting my hp compaq nc 8000, the 2.6.19.2 kernel log asks me to
report something to linux-kernel which I am doing now:

Jan 13 12:44:13 scyw00225 kernel: PCI: Probing PCI hardware (bus 00)
Jan 13 12:44:13 scyw00225 kernel: ACPI: Assume root bridge [\_SB_.C044] bus is 0
Jan 13 12:44:13 scyw00225 kernel: PCI quirk: region 1000-107f claimed by ICH4 ACPI/GPIO/TCO
Jan 13 12:44:13 scyw00225 kernel: PCI quirk: region 1100-113f claimed by ICH4 GPIO
Jan 13 12:44:13 scyw00225 kernel: PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
Jan 13 12:44:13 scyw00225 kernel: Boot video device is 0000:01:00.0
Jan 13 12:44:13 scyw00225 kernel: PCI: Transparent bridge - 0000:00:1e.0
Jan 13 12:44:13 scyw00225 kernel: PCI: Bus #05 (-#08) is hidden behind transparent bridge #02 (-#05) (try 'pci=assign-busses')
Jan 13 12:44:13 scyw00225 kernel: Please report the result to linux-kernel to fix this permanently
Jan 13 12:44:13 scyw00225 kernel: PCI: Bus #09 (-#0c) is hidden behind transparent bridge #02 (-#05) (try 'pci=assign-busses')
Jan 13 12:44:13 scyw00225 kernel: Please report the result to linux-kernel to fix this permanently
Jan 13 12:44:13 scyw00225 kernel: ACPI: PCI Interrupt Routing Table [\_SB_.C044._PRT]
Jan 13 12:44:13 scyw00225 kernel: ACPI: PCI Interrupt Routing Table [\_SB_.C044.C045._PRT]
Jan 13 12:44:13 scyw00225 kernel: ACPI: PCI Interrupt Routing Table [\_SB_.C044.C056._PRT]
Jan 13 12:44:13 scyw00225 kernel: ACPI: Power Resource [C16D] (on)
Jan 13 12:44:13 scyw00225 kernel: ACPI: Power Resource [C184] (on)
Jan 13 12:44:13 scyw00225 kernel: ACPI: Power Resource [C18B] (on)
Jan 13 12:44:13 scyw00225 kernel: ACPI: Power Resource [C195] (on)
Jan 13 12:44:13 scyw00225 kernel: ACPI: Power Resource [C0E6] (on)

When I try pci=assign-busses on the kernel command line, the four
lines vanish:

Jan 13 12:29:29 scyw00225 kernel: PCI: Probing PCI hardware (bus 00)
Jan 13 12:29:29 scyw00225 kernel: ACPI: Assume root bridge [\_SB_.C044] bus is 0
Jan 13 12:29:29 scyw00225 kernel: PCI quirk: region 1000-107f claimed by ICH4 ACPI/GPIO/TCO
Jan 13 12:29:29 scyw00225 kernel: PCI quirk: region 1100-113f claimed by ICH4 GPIO
Jan 13 12:29:29 scyw00225 kernel: PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
Jan 13 12:29:29 scyw00225 kernel: Boot video device is 0000:01:00.0
Jan 13 12:29:29 scyw00225 kernel: PCI: Transparent bridge - 0000:00:1e.0
Jan 13 12:29:29 scyw00225 kernel: ACPI: PCI Interrupt Routing Table [\_SB_.C044._PRT]
Jan 13 12:29:29 scyw00225 kernel: ACPI: PCI Interrupt Routing Table [\_SB_.C044.C045._PRT]
Jan 13 12:29:29 scyw00225 kernel: ACPI: PCI Interrupt Routing Table [\_SB_.C044.C056._PRT]
Jan 13 12:29:29 scyw00225 kernel: ACPI: Power Resource [C16D] (on)
Jan 13 12:29:29 scyw00225 kernel: ACPI: Power Resource [C184] (on)
Jan 13 12:29:29 scyw00225 kernel: ACPI: Power Resource [C18B] (on)
Jan 13 12:29:29 scyw00225 kernel: ACPI: Power Resource [C195] (on)
Jan 13 12:29:29 scyw00225 kernel: ACPI: Power Resource [C0E6] (on)

I do not have a single clue what that mean; the notebook runs fine
just with or without pci=assign-busses. 

Is there something I shold do? Is there something you should do with
the kernel?

Greetings
Marc

-- 
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Marc Haber         | "I don't trust Computers. They | Mailadresse im Header
Mannheim, Germany  |  lose things."    Winona Ryder | Fon: *49 621 72739834
Nordisch by Nature |  How to make an American Quilt | Fax: *49 621 72739835
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