Re: x86/mce: machine check warning during poweroff

[Linus Torvalds]

On Fri, Jan 13, 2012 at 12:22 PM, Srivatsa S. Bhat
<srivatsa.bhat@xxxxxxxxxxxxxxxxxx> wrote:
> However, it is to be noted that, technically this warning (machinecheck1
> not having a release() function) is not all that new. Just that people
> didn't probably notice it earlier (reason explained below).

.. but there really is some semantic issue going on here. I'm not the
only one for whom suspend/resume simply does not work with MCE
enabled, and that "not work" coincides with the switch-over from
sysdev to struct device.

I suspect it is some subtle difference in sysdev_unregister() vs
device_unregister(). The message change is just a symptom of the fact
that we go through different paths.

For me MCE hangs only on the *second* suspend, but it sounds like
others see it on the first one.

                        Linus
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