Re: [GIT PATCH] driver core merge for 3.3
From: Linus Torvalds
Date: Thu Jan 12 2012 - 20:12:18 EST
On Fri, Jan 6, 2012 at 12:11 PM, Greg KH <gregkh@xxxxxxx> wrote:
>
> Big thing here, that caused all of the merge issues, is the removal of
> the sysdev code. It has been long needed to be removed, Kay finally
> just did it, thankfully. There are patches pending that take advantage
> of this, providing properly CPU hotplug driver loading support, that
> will have to wait until 3.4, as they didn't make the merge window in
> time. Note, the sysdev code isn't removed from the tree just yet, to
> help catch any other tree that might not have noticed this in the
> linux-next merge process. I'll send a follow-on patch after 3.3-rc1 is
> out that removes this code, after ensuring that no other in-tree code is
> using the sysdev structures.
Hmm. I think this is the cause of one of the suspend/resume problems I'm seeing:
Device 'machinecheck3' does not have a releae() function, it is
broken and must be fixed
that's the WARN_ON() in drivers/base/core.c (line 192), and it comes
from disable_nonboot_cpus() doing the whole device_unregister() thing.
Afaik, it's arch/x86/kernel/cpu/mcheck/mce.c.
Ho humm?
Linus
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