linux-kernel - Re: [Bug 41722] Clevo M5X0JE hangs in ACPI init

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Message-ID: <20120108222722.GB7058@ime.usp.br>
Date:	Sun, 8 Jan 2012 20:27:22 -0200
From:	Rogério Brito <rbrito@....usp.br>
To:	Edward Donovan <edward.donovan@...ble.net>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	bugzilla-daemon@...zilla.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-kernel@...r.kernel.org,
	Márcia Coutinho de Brito <mcbrito@...il.com>
Subject: Re: [Bug 41722] Clevo M5X0JE hangs in ACPI init

Hi, Edward.

On Jan 06 2012, Edward Donovan wrote:
> I'll be interested to know if any IRQ handled by 2.6.38 isn't handled now,
> but I expect it will be.  I'm sorry if that isn't enough for this laptop,
> though -

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@...ux-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).

Any directions to debug this properly are welcome.


Thanks,

-- 
Rogério Brito : rbrito@...e.usp.br,gmail.com} : GPG key 4096R/BCFCAAAA
http://rb.doesntexist.org : Packages for LaTeX : algorithms.berlios.de
DebianQA: http://qa.debian.org/developer.php?login=rbrito%40ime.usp.br

View attachment "do_not_size_subtractive_decoding_transparent_pci_to_pci_bridges.patch" of type "text/x-diff" (513 bytes)