linux-kernel - Re: [PATCH] ALSA: hda-intel - Disable MSI support by default

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Date:	Fri, 17 Nov 2006 01:49:27 +0100
From:	Olivier Nicolas <olivn@...llprod.org>
To:	"Lu, Yinghai" <yinghai.lu@....com>
CC:	Linus Torvalds <torvalds@...l.org>, Mws <mws@...sted-brains.org>,
	Jeff Garzik <jeff@...zik.org>,
	Krzysztof Halasa <khc@...waw.pl>,
	David Miller <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, tiwai@...e.de
Subject: Re: [PATCH] ALSA: hda-intel - Disable MSI support by default

Lu, Yinghai wrote:
> -----Original Message-----
> From: Olivier Nicolas [mailto:olivn@...llprod.org] 
> 
> 
>> IRQ 22 is disabled but snd_hda_intel seems to get a MSI interrupt! (It 
>> cannot be reproduced)
> 
>> 313:          0          1   PCI-MSI-edge      HDA Intel
> 
> Please try attached one, also build hda_intel into kernel directly if it
> is not.
> 
> YH
> 

ALSA is build directly in the kernel

messages: htt://olivn.trollprod.org/19-rc6/hda_intel_pci_intx_11162006.dmesg

cat /proc/interrupts
            CPU0       CPU1
   0:        627     164040   IO-APIC-edge      timer
   1:          5       1363   IO-APIC-edge      i8042
   6:          0          5   IO-APIC-edge      floppy
   7:          0          0   IO-APIC-edge      MOTU MTPAV
   8:          0          0   IO-APIC-edge      rtc
   9:          0          0   IO-APIC-fasteoi   acpi
  12:        142      39757   IO-APIC-edge      i8042
  14:          5       1725   IO-APIC-edge      ide0
  16:         34      45618   IO-APIC-fasteoi   libata, ohci1394, nvidia
  17:          0          4   IO-APIC-fasteoi   Bt87x audio, bttv0
  20:         84      30048   IO-APIC-fasteoi   libata
  21:          2        451   IO-APIC-fasteoi   HDA Intel, ehci_hcd:usb2
  22:          0          1   IO-APIC-fasteoi   libata, ohci_hcd:usb1
  23:          0          0   IO-APIC-fasteoi   libata
308:        179      63652   PCI-MSI-edge      eth1
309:          1         98   PCI-MSI-edge      eth1
310:          1        117   PCI-MSI-edge      eth1
311:        179      63673   PCI-MSI-edge      eth0
312:          0          0   PCI-MSI-edge      eth0
313:          0          1   PCI-MSI-edge      eth0
NMI:         84         72
LOC:     164581     164616
ERR:          0


cat /proc/asound/cards
  0 [Dummy          ]: Dummy - Dummy
                       Dummy 1
  1 [VirMIDI        ]: VirMIDI - VirMIDI
                       Virtual MIDI Card 1
  2 [port           ]: MTPAV - MTPAV on parallel port
                       MTPAV on parallel port at 0x378
  3 [Bt878          ]: Bt87x - Brooktree Bt878
                       Brooktree Bt878 at 0xfdffe000, irq 17
  4 [NVidia         ]: HDA-Intel - HDA NVidia
                       HDA NVidia at 0xfe020000 irq 313


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