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

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Message-Id: <alpine.LFD.2.21.1906211817010.2388@schleppi>
Date:   Fri, 21 Jun 2019 18:19:36 +0200 (CEST)
From:   Sebastian Ott <sebott@...ux.ibm.com>
To:     Cornelia Huck <cohuck@...hat.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 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?