[PATCH] driver core: fix async device shutdown hang

Greg Kroah-Hartman gregkh at linuxfoundation.org
Tue Sep 17 23:12:33 PDT 2024


On Tue, Sep 17, 2024 at 07:20:41PM -0500, stuart hayes wrote:
> 
> 
> On 9/17/2024 3:42 PM, Greg Kroah-Hartman wrote:
> > On Tue, Sep 17, 2024 at 03:15:17PM -0500, Stuart Hayes wrote:
> > > Modify device_shutdown() so that supplier devices do not wait for
> > > consumer devices to be shut down first when the devlink is sync state
> > > only, since the consumer is not dependent on the supplier in this case.
> > > 
> > > Without this change, a circular dependency could hang the system.
> > > 
> > > Signed-off-by: Stuart Hayes <stuart.w.hayes at gmail.com>
> > 
> > What commit id does this fix?  Should it go to stable?
> > 
> > And what driver is causing this problem, is this a regression or for
> > something new that just got added to the tree?
> > 
> > thanks,
> > 
> > greg k-h
> 
> This fixes commit 8064952c65045f05ee2671fe437770e50c151776, in
> driver-core-next & linux-next... it's problem with code that was just
> added to the tree (in drivers/base/core.c).  It is not in stable.

Ah, that wasn't obvious, sorry.

> Apologies, I should have mentioned that from the start.

Can you resend this with a "Fixes:" tag in it so I can just take it that
way and not have to edit it by hand?

thanks,

greg k-h



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