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    SubjectRe: [Bug 41722] Clevo M5X0JE hangs in ACPI init
    On Sun, Jan 8, 2012 at 3:27 PM, Rogério Brito <rbrito@ime.usp.br> wrote:
    > I bisected the PCI stuff and ended up with a bad commit 12c22d6ef299ccf0955,
    > which was made by Linus:
    >
    > ,----[ git show 12c22d6ef299ccf0955e5756eb57d90d7577ac68 ]
    > | commit 12c22d6ef299ccf0955e5756eb57d90d7577ac68
    > | Author: Linus Torvalds <torvalds@linux-foundation.org>
    > | Date:   Wed Mar 26 11:22:40 2008 -0700
    > |
    > |     Revert "PCI: remove transparent bridge sizing"
    > | (...)
    > `----
    >
    > The patch that I am using to make this laptop boot at least is essentially a
    > revert of that commit.
    >
    > Just for the sake of documentation, I am attaching here the patch that makes
    > things work (at least partially).

    Your patch avoids sizing transparent bridges. I don't have an opinion
    on whether that's a good idea in general.

    However, I am curious about what breaks on your system when we do size
    the transparent bridge. It seems like sizing it should *work*, even
    if it's not strictly necessary, so I wonder if this hang is telling us
    about some other PCI allocation issue we should fix. Would you mind
    opening a bugzilla for this, since the current tree is broken for you,
    and attaching a log or digital photo of the hang?

    Bjorn
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