s390/cio: introduce driver_override on the css bus
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 782a985d ("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@redhat.com> Reviewed-by:
Halil Pasic <pasic@linux.ibm.com> Reviewed-by:
Sebastian Ott <sebott@linux.ibm.com> Signed-off-by:
Sebastian Ott <sebott@linux.ibm.com> Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com>
parent
dbd66558
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