IRQ 0 on BRI card (B200E)

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Hello list,

I’m having a problem with a BRI card, a B200E (PCI-e) card on an Intel
server with a riser that I’m guessing is what’s making the problem.

The output of lspci -vvv is:

07:00.0 ISDN controller: Cologne Chip Designs GmbH ISDN network
Controller [HFC-4S] (rev 01)
Subsystem: Cologne Chip Designs GmbH Device e884
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
SERR- Interrupt: pin A routed to IRQ 0
Region 0: I/O ports at 2000 [size=8]
Region 1: Memory at b1a00000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Kernel modules: hfcmulti

I’ve tried some combinations of pci=noacpi, noacpi, noapic, acpi=nopci
and some others. Doesn’t seem to do anything, I still get “0 devices
registered” on dmesg.

OS: Debian Lenny, kernel 2.6.26.

Anyone has any idea of what I can do to fix/further debug this issue?

Thanks in advance.
Best regards,
Paulo Santos