Bug 7217

Summary:	hidden bus behind transparent bridge
Product:	Drivers	Reporter:	Nan Wang (nanericwang)
Component:	PCI	Assignee:	Greg Kroah-Hartman (greg)
Status:	REJECTED INSUFFICIENT_DATA
Severity:	high	CC:	bunk
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.18	Subsystem:
Regression:	---	Bisected commit-id:

Description Nan Wang 2006-09-27 14:58:26 UTC

Most recent kernel where this bug did not occur:
2.6.16

Distribution:
Gentoo

Hardware Environment:
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express
Processor to DRAM Controller (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML
Express Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express
Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High
Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI
Express Port 1 (rev 04)
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI
Express Port 2 (rev 04)
00:1c.2 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI
Express Port 3 (rev 04)
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
USB UHCI #1 (rev 04)
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
USB UHCI #2 (rev 04)
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
USB UHCI #3 (rev 04)
00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
USB UHCI #4 (rev 04)
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
USB2 EHCI Controller (rev 04)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev d4)
00:1f.0 ISA bridge: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge (rev 04)
00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE
Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus
Controller (rev 04)
06:06.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5788 Gigabit
Ethernet (rev 03)
06:07.0 CardBus bridge: Texas Instruments PCIxx21/x515 Cardbus Controller
06:07.2 FireWire (IEEE 1394): Texas Instruments OHCI Compliant IEEE 1394 Host
Controller
06:07.3 Mass storage controller: Texas Instruments PCIxx21 Integrated FlashMedia
Controller
06:08.0 Network controller: Intel Corporation PRO/Wireless 2200BG Network
Connection (rev 05)

Software Environment:
udev 087, bash 3.1_p17

Problem Description:

I found this error message in dmesg, and I was asked to report this:

...
PCI quirk: region 1000-107f claimed by ICH6 ACPI/GPIO/TCO
PCI quirk: region 1180-11bf claimed by ICH6 GPIO
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
PCI: Transparent bridge - 0000:00:1e.0
PCI: Bus #07 (-#08) is hidden behind transparent bridge #06 (-#07) (try
'pci=assign-busses')
Please report the result to linux-kernel to fix this permanently
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP01._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP02._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIB._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 1 3 4 5 6 7 *10 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 1 3 4 5 6 7 11 12 14 15) *10
ACPI: PCI Interrupt Link [LNKC] (IRQs 1 3 4 5 6 7 10 12 14 15) *11
ACPI: PCI Interrupt Link [LNKD] (IRQs 1 3 4 5 6 7 *11 12 14 15)
ACPI: PCI Interrupt Link [LNKE] (IRQs 1 3 4 5 6 7 10 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKF] (IRQs 1 3 4 5 6 7 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKG] (IRQs 1 3 4 5 6 7 10 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKH] (IRQs 1 3 4 5 6 7 *11 12 14 15)
ACPI: Embedded Controller [EC0] (gpe 29) interrupt mode.


Steps to reproduce:
It always happens.

Comment 1 Adam Belay 2006-12-04 23:04:48 UTC

Could you please attach the output of "lspci -xxx" when running as root.

Comment 2 Adrian Bunk 2007-02-15 08:42:48 UTC

Please reopen this issue if:
- it is still present with kernel 2.6.20 and
- you can provide the requested data.