Re: [driver-core PATCH v9 1/9] driver core: Establish order of operations for device_add and device_del via bitflag
From: Alexander Duyck
Date: Thu Jan 10 2019 - 12:37:36 EST
On Thu, 2018-12-20 at 16:28 +0100, Greg Kroah-Hartman wrote:
> On Wed, Dec 19, 2018 at 03:27:48PM +0100, Rafael J. Wysocki wrote:
> > On Thu, Dec 13, 2018 at 1:45 AM Alexander Duyck
> > <alexander.h.duyck@xxxxxxxxxxxxxxx> wrote:
> > >
> > > Add an additional bit flag to the device struct named "dead".
> > >
> > > This additional flag provides a guarantee that when a device_del is
> > > executed on a given interface an async worker will not attempt to attach
> > > the driver following the earlier device_del call. Previously this
> > > guarantee was not present and could result in the device_del call
> > > attempting to remove a driver from an interface only to have the async
> > > worker attempt to probe the driver later when it finally completes the
> > > asynchronous probe call.
> > >
> > > One additional change added was that I pulled the check for dev->driver
> > > out of the __device_attach_driver call and instead placed it in the
> > > __device_attach_async_helper call. This was motivated by the fact that the
> > > only other caller of this, __device_attach, had already taken the
> > > device_lock() and checked for dev->driver. Instead of testing for this
> > > twice in this path it makes more sense to just consolidate the dev->dead
> > > and dev->driver checks together into one set of checks.
> > >
> > > Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
> > > Signed-off-by: Alexander Duyck <alexander.h.duyck@xxxxxxxxxxxxxxx>
> >
> > Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
>
> It's too late for 4.21-rc1 as my tree should be closed by now.
>
> So I'll hold on to these in my queue until 4.21-rc1 is out and then
> queue them up and see what breaks in linux-next :)
>
> thanks,
>
> greg k-h
I just wanted to check on on this patch set in terms of workflow. Since
it looks like we now have 5.0-rc1 out I was wondering what the ETA for
this patch set being pulled was, or if I need to resubmit the set.
Thanks.
- Alex