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Date:      Thu, 07 Dec 2000 00:44:06 +0100
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        Mike Smith <msmith@freebsd.org>
Cc:        current@freebsd.org, nsayer@freebsd.org
Subject:   Re: USB related commit leads to hung systems if USB-IRQ=Disabled in BIOS 
Message-ID:  <55308.976146246@critter>
In-Reply-To: Your message of "Wed, 06 Dec 2000 15:46:31 PST." <200012062346.eB6NkVF00891@mass.osd.bsdi.com> 

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In message <200012062346.eB6NkVF00891@mass.osd.bsdi.com>, Mike Smith writes:
>> > 
>> > In my bios I have PnPOS=NO, USB-IRQ=Disabled.
>> > 
>> > The commit below results in a PCI interrupt storm and a terminally
>> > wedged system right after interrupts are enabled.
>> 
>> This would be a bug in the UHCI or OHCI driver then.  You can avoid it by 
>> not running the driver.
>
>I should have mentioned; you can probably also avoid it by letting your 
>BIOS give the USB controller an IRQ, since it'll almost certainly also 
>perform whatever initialisation the driver is currently missing out on.

Right, that is what I did once I realized that this particular commit
was the culprit.

--
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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