https://bugzilla.kernel.org/show_bug.cgi?id=20232





--- Comment #36 from Ozan Caglayan <[email protected]>  2010-12-29 15:02:14 ---
Yes exactly.

But,

What I've tried as 2.6.37_rc7-git4 + patch in comment#23 was not vanilla at
all. It's carrying a patch from upstream that seems related to the issue so
maybe it was this commit which fixed the issue:

commit 885c252ffb059dc493200bdb981bdd21cabe4442
Author: Matthew Garrett <[email protected]>
Date:   Thu Dec 9 18:31:59 2010 -0500

    PCI: _OSC "supported" field should contain supported features, not enabled
ones

    From testing with Windows, the call to the PCI root _OSC method includes
    the full set of features supported by the operating system even if the
    hardware has already indicated that it doesn't support ASPM or MSI.
    https://bugzilla.redhat.com/show_bug.cgi?id=638912 is a case where making
    the _OSC call will incorrectly configure the chipset unless the supported
    field has bits 1, 2 and 4 set. Rework the functionality to ensure that
    we match this behaviour.

Anyway, I'll try with a vanilla 2.6.37_rc8 with and without the patch in
comment29 to see the outcome.

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