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Date:      Thu, 07 Dec 2000 00:13:50 +0100
From:      Poul-Henning Kamp <phk@freebsd.org>
To:        current@freebsd.org, nsayer@freebsd.org
Subject:   USB related commit leads to hung systems if USB-IRQ=Disabled in BIOS
Message-ID:  <55031.976144430@critter>

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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.

Poul-Henning

| nsayer      2000/12/03 09:07:24 PST
| 
|   Modified files:
|     sys/pci              ohci_pci.c uhci_pci.c
|   Log:
|   We now have the ability to assign the correct IRQ when PNP-OS is turned
|   on. So stop failing the attach if the IRQ is unassigned. With this
|   patch, I can now boot with PNP-OS YES in my BIOS no differently than
|   PNP-OS NO (which is a good thing since Windows hangs with PNP-OS NO).
|  
|   Obtained from:        msmith
|  
|   Revision  Changes    Path
|   1.21      +1 -11     src/sys/pci/ohci_pci.c
|  1.32      +1 -11     src/sys/pci/uhci_pci.c

--
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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