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    SubjectRe: [PATCH] Disable i8042 checks on Intel Apple Macs
    On Fri, 2010-01-22 at 09:46 -0800, H. Peter Anvin wrote:
    > On 01/21/2010 04:26 PM, Robert Hancock wrote:
    > >>
    > >> This is from the changelog when this was introduced:
    > >>
    > >> -------------------------------------------------------------------------
    > >> 2005/02/25 21:21:03+01:00 vojtech
    > >> input: After testing on real world hardware, it's obvious we can't trust
    > >> ACPIPnP nor PnPBIOS to properly report the existence of a keyboard
    > >> and mouse port in all cases. Some BIOSes hide the ports if no mouse
    > >> or keyboard is connected, causing trouble with eg. KVM switches.
    > >
    > > If it's just that case (which isn't certain given Vojtech's report),
    > > then I think it's reasonable to ignore that by default. If the BIOS
    > > decided to hide the controller then our default behavior should be to
    > > believe it, with the ability to override that if necessary, not the
    > > other way around.
    > >
    > You think it's reasonable to have the keyboard not work because
    > someone's KVM switch was in the wrong position when the system booted?
    > Sorry, that's not how the world works. It's sad that someone had the
    > bright idea that things should work that way, but that is definitely a
    > regression I wouldn't want to deal with.
    > The only thing that I could think of as a reasonable limit would be to
    > not probe these ports if we are booted from EFI/UEFI. That would cover
    > the ia64 case, too. However, I'm hardly confident that we wouldn't have
    > the same class of problems even there.

    Then I would guess that you think the manner in which I disabled the
    i8042 checks in the original patch is viable/mergeable?

    /Bastien, not sure who would have the last word

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