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    SubjectRe: [Bug #13644] hibernation/swsusp lockup due to acpi-cpufreq
    On Mon, Jun 29, 2009 at 02:31:01AM +0200, Rafael J. Wysocki wrote:
    >
    > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=13644
    > Subject : hibernation/swsusp lockup due to acpi-cpufreq
    > Submitter : Johannes Stezenbach <js@sig21.net>
    > Date : 2009-06-16 01:27 (13 days old)
    > References : http://lkml.org/lkml/2009/6/15/630
    > Handled-By : Rafael J. Wysocki <rjw@sisk.pl>

    I tested v2.6.31-rc1-228-g2bfdd79 and the bug is still there.
    It actually got worse, the local_irq_save/restore workaround
    in kernel/up-c (http://lkml.org/lkml/2009/6/16/333) doesn't fix it
    anymore, it hangs at suspend before writing out the image.

    With the up.c workaround (including a
    WARN_ON_ONCE(irqs_disabled() && !oops_in_progress);)
    applied and no_console_suspend I captured the attached
    output using a crappy webcam. (Without the workaround
    there is a huge spew of warnings about irqs enabled
    unexpectedly.) I guess the interesting part is

    pm_op(): pci_pm_thaw returns -16
    PM: Device 0000:00:00.0 failed to thaw: error -16

    (PCI info is in http://lkml.org/lkml/2009/6/15/630)


    Johannes
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