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    SubjectRE: [PATCH][2.6.0-test4] Fix 'pci=noacpi' with buggy ACPI BIOSes
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    Thomas,
    Thanks for the fix.
    I took the liberty of dropping your note into
    http://bugzilla.kernel.org/show_bug.cgi?id=1219 and we'll use that means
    to track that the right fix gets into both 2.4 and 2.6.

    Thanks,
    -Len


    > -----Original Message-----
    > From: Thomas Schlichter [mailto:schlicht@uni-mannheim.de]
    > Sent: Monday, August 25, 2003 4:32 AM
    > To: Andrew Morton
    > Cc: LKML; Joonas Koivunen; Peter Lieverdink; Grover, Andrew
    > Subject: [PATCH][2.6.0-test4] Fix 'pci=noacpi' with buggy ACPI BIOSes
    >
    >
    > Hi Andrew,
    >
    > the attached patch fixes interrupt routing probems for (at
    > least 3) people
    > with broken ACPI BIOSes. If only the ACPI interrupt routing
    > part is broken,
    > 'pci=noacpi' should help as the documantation states:
    >
    > pci=option[,option...]
    > [...]
    > noacpi [IA-32] Do not use ACPI for IRQ routing.
    >
    > The problem was that ACPI interrupt routing was not correctly
    > disabled.
    > The patch applies cleanly to 2.6.0-test4...
    >
    > Thomas
    >
    > On Monday 25 August 2003 03:13, Peter Lieverdink wrote:
    > > Hi Thomas,
    > >
    > > Your patch works beautifully. 'acpi=nopci' previously
    > caused IDE to work
    > > fine, but made the kernel not detect USB and network
    > devices. With your
    > > patch it sees all peripherals AND acpi is available for the
    > cpu. I wonder
    > > if it would be accepted into the kernel as a patch to
    > workaround buggy acpi
    > > bioses.
    > >
    > > Thanks heaps!
    > >
    > > - Peter.
    > > --
    > >
    > > At 23:44 24/08/2003 +0200, you wrote:
    > > >Am Sunday 24 August 2003 22:54 schrieb David van Hoose:
    > > > > Kevin P. Fleming wrote:
    > > > > > Peter Lieverdink wrote:
    > > > > >> When I enable ACPI on 2.6.0-test4 (also on
    > 2.6.0-test3-*), the
    > > > > >> kernel no longer recognises my IDE controller and
    > drops down to PIO
    > > > > >> mode for harddisk access. Additionally, USB devices don't get
    > > > > >> detected.
    > > > > >
    > > > > > I'm running -test4 here with ACPI and have no trouble with USB
    > > > > > devices.
    > > > >
    > > > > I'm running test4 here with ACPI and have no USB
    > following a call trace
    > > > > with "IRQ 20: nobody cared". ACPI seems to make odd
    > reports. I've been
    > > > > having this problem since 2.5.70'ish. Posted numerous
    > times, but nobody
    > > > > seems to care about it. I also have a PS/2 mouse
    > detection when I have
    > > > > no mice attached to my system.
    > > > >
    > > > > >> The system is an Athlon 2400+ on a Gibabyte GA-7VAXP
    > mainboard.
    > > > > >> (KT400)
    > > > > >
    > > > > > My system is an Athlon 1000 on an MSI KT266-based board.
    > > > >
    > > > > I have a Pentium 4 2.53 GHz on a Asus P4S8X mainboard.
    > > > >
    > > > > -David
    > > > >
    > > > > PS. dmesg is attached with ACPI debug and USB debug enabled.
    > > >
    > > >I had similar problems with my Epox 8K9A (KT400) Board.
    > > >
    > > >If I wanted to use my USB ports I had to boot wiht
    > 'acpi=off'. But with
    > > > the patch attached it is possible for me to boot with
    > 'pci=noacpi'. It
    > > > has the advantage that ACPI stays enabled...
    > > >
    > > >You are free to give it a try...
    > > >
    > > > Thomas
    >
    > On Sunday 10 August 2003 01:24, Joonas Koivunen:
    > > On Saturday 09 August 2003 19:02, Thomas Schlichter wrote:
    > > > It's not a problem with ACPI, it's more a problem with
    > the interrupt
    > > > routing based on the ACPI tables. These tables seem to be
    > not correctly
    > > > implemented in the BIOS and, as the german EPOX support
    > admits, are not
    > > > really tested. To change this you may contact the EPOX support and
    > > > describe your problems, too....
    > >
    > > Thanks for letting me know.. I had a image of EPOX being
    > pretty good with
    > > motherboards.. Guess not then.
    > >
    > > > If you want to use ACPI while this BIOS bug is not fixed
    > you may use the
    > > > attached patch and boot with pci=noacpi. Without the
    > patch this doesn't
    > > > work for me here...
    > >
    > > Why isn't this patch in the mainstream kernel? There are many other
    > > chipset/bios fixes in the kernel.. This would save many
    > > reboot/recompilings/worries until or if ever epox does
    > something with the
    > > bios.
    > >
    > > The patch works nicely. Though I did apply it manually to
    > -test3 :) But it
    > > works.
    > >
    > > > Best regards
    > > > Thomas Schlichter
    > >
    > > Thanks again
    > > -rzei
    >
    -
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