linux-kernel - Re: [PATCH] s390/cio: introduce driver

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Date:   Wed, 3 Jul 2019 16:55:06 +0200
From:   Cornelia Huck <cohuck@...hat.com>
To:     Sebastian Ott <sebott@...ux.ibm.com>
Cc:     Peter Oberparleiter <oberpar@...ux.ibm.com>,
        Halil Pasic <pasic@...ux.ibm.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] s390/cio: introduce driver_override on the css bus

On Mon, 24 Jun 2019 09:17:40 +0200
Cornelia Huck <cohuck@...hat.com> wrote:

> On Fri, 21 Jun 2019 18:19:36 +0200 (CEST)
> Sebastian Ott <sebott@...ux.ibm.com> wrote:
> 
> > On Thu, 13 Jun 2019, Cornelia Huck wrote:  
> > > Sometimes, we want to control which of the matching drivers
> > > binds to a subchannel device (e.g. for subchannels we want to
> > > handle via vfio-ccw).
> > > 
> > > For pci devices, a mechanism to do so has been introduced in
> > > 782a985d7af2 ("PCI: Introduce new device binding path using
> > > pci_dev.driver_override"). It makes sense to introduce the
> > > driver_override attribute for subchannel devices as well, so
> > > that we can easily extend the 'driverctl' tool (which makes
> > > use of the driver_override attribute for pci).
> > > 
> > > Note that unlike pci we still require a driver override to
> > > match the subchannel type; matching more than one subchannel
> > > type is probably not useful anyway.
> > > 
> > > Signed-off-by: Cornelia Huck <cohuck@...hat.com>    
> > 
> > Reviewed-by: Sebastian Ott <sebott@...ux.ibm.com>
> > 
> > Should I take that via our git tree or do you have other patches depending 
> > on this one?
> >   
> 
> No, this patch is stand-alone; everything else is happening in user
> space, so taking it via your tree would be great. Thanks!

Friendly ping (I don't see it on s390/features yet; or is this going
via some other path?)