amd64/80114: kldload snd_ich causes interrupt storm when ACPI is enabled

[Matthias Apitz]

The following reply was made to PR amd64/80114; it has been noted by GNATS.

From: Matthias Apitz <guru at Sisis.de>
To: bug-followup at freebsd.org, flz at xbsd.org
Cc:  
Subject: Re: amd64/80114: kldload snd_ich causes interrupt storm when ACPI is enabled
Date: Sun, 25 Sep 2005 16:04:47 +0200

 Hello,
 
 I can see the same problem on i386 notebook with 5.4-RELEASE,
 GENERIC kernel and the following modules loaded:
 
 # kldstat
 Id Refs Address    Size     Name
  1   15 0xc0400000 5dde24   kernel
  2    1 0xc09de000 47e4     if_tap.ko
  3    1 0xc09e3000 d164     kqemu.ko
  4   14 0xc09f1000 56270    acpi.ko
  5    1 0xc2784000 1c000    ipl.ko
  6    1 0xc2867000 17000    linux.ko
  7    2 0xc2ad2000 18000    sound.ko
  9    1 0xc2b49000 17000    radeon.ko
 10    1 0xc2af1000 5000     snd_ich.ko
 
 # kldunload snd_ich
 Interrupt storm detected on "irq11: cbb1 pcm0+++"; throttling interrupt source
 pcm0: detached
 
 # kldload snd_ich
 pcm0: <SiS 7012> port 0x1800-0x187f,0x1c00-0x1cff irq 11 at device 2.7 on pci0
 pcm0: <Cirrus Logic CS4299 AC97 Codec>
 
 After 'kldunload snd_ich' and 'kldload snd_ich' sound works fine.
 
 	matthias
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 Matthias Apitz / Sisis Informationssysteme GmbH
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