2.6.18-rc5-mm1 unusual IRQ number for VIA device

From: Jay Cliburn
Date: Mon Sep 04 2006 - 09:49:04 EST


Running 2.6.18-rc5.mm1 on an Asus M2V mainboard with dual-core Athlon cpu, the onboard audio device gets assigned and IRQ of 8410. Under 2.6.18-rc4-mm3, the same device gets assigned IRQ 17. Is this a way to get around this?

/proc/interrupts:
CPU0 CPU1
0: 525177 0 IO-APIC-edge timer
1: 3016 0 IO-APIC-edge i8042
6: 5 0 IO-APIC-edge floppy
7: 0 0 IO-APIC-edge parport0
8: 0 0 IO-APIC-edge rtc
9: 0 0 IO-APIC-fasteoi acpi
12: 4 0 IO-APIC-edge i8042
14: 18433 0 IO-APIC-edge ide0
20: 16017 0 IO-APIC-fasteoi uhci_hcd:usb1
21: 66080 0 IO-APIC-fasteoi uhci_hcd:usb3, ehci_hcd:usb5, libata
22: 0 0 IO-APIC-fasteoi uhci_hcd:usb2
23: 0 0 IO-APIC-fasteoi uhci_hcd:usb4
36: 4600 0 IO-APIC-fasteoi eth0
8410: 193 0 PCI-MSI-<NULL> HDA Intel
NMI: 180 91
LOC: 525078 525029
ERR: 0

And here's the lspci output for the audio device:
08:01.0 Audio device: VIA Technologies, Inc. VIA High Definition Audio Controller (rev 10)
Subsystem: ASUSTeK Computer Inc. Unknown device 81e7
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 8410
Region 0: Memory at fbffc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [60] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+
Address: 00000000fee00000 Data: 406a
Capabilities: [70] Express Unknown type IRQ 0
Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
Device: Latency L0s <64ns, L1 <1us
Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
Device: MaxPayload 128 bytes, MaxReadReq 128 bytes
Link: Supported Speed unknown, Width x0, ASPM unknown, Port 0
Link: Latency L0s <64ns, L1 <1us
Link: ASPM Disabled CommClk- ExtSynch-
Link: Speed unknown, Width x0
Capabilities: [100] Virtual Channel
00: 06 11 88 32 06 04 10 00 10 00 03 04 10 00 00 00
10: 04 c0 ff fb 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 e7 81
30: 00 00 00 00 50 00 00 00 00 00 00 00 01 01 00 00
40: 00 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 01 60 42 c8 00 00 00 00 00 00 00 00 00 00 00 00
60: 05 70 81 00 00 00 e0 fe 00 00 00 00 6a 40 00 00
70: 10 00 91 00 00 00 00 00 00 00 30 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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