Re: [PATCH] PM: Handle unregistering devices during suspend/hibernation

[Greg KH <gregkh@suse.de>]

On Sat, Feb 23, 2008 at 02:19:27AM +0100, Rafael J. Wysocki wrote:
> On Saturday, 23 of February 2008, Rafael J. Wysocki wrote:
> > On Saturday, 23 of February 2008, Greg KH wrote:
> > > On Sat, Feb 23, 2008 at 12:53:11AM +0100, Rafael J. Wysocki wrote:
> > > > Hi Greg,
> > > > 
> > > > The appended patch fixes the issue with the new code for suspending/resuming
> > > > devices, related to the fact that some device drivers and CPU hotplug notifiers
> > > > unregister device objects while suspend is in progress, which leads to
> > > > deadlocks.
> > > > 
> > > > Please consider taking it for 2.6.25.
> 
> Ouch, please disregard this patch.
> 
> Alan rightfully noticed that it may confuse subsystems assuming that after
> device_unregister() has returned, the driver's ->release() method has run.
> 
> Unfortunately, he did that in a Bugzilla comment that has never reached
> my mailbox (strangely enough, I haven't been receiving any messages from
> the Bugzilla for the last two days or so).
> 
> Sorry for the trouble.

No problem at all.

thanks,

greg k-h