Re: [PATCH 2/2] PCI: add remove_id sysfs entry

Greg KH
2009-02-24T03:47:47Z

On Mon, Feb 23, 2009 at 06:18:29PM -0800, Chris Wright wrote:
> This adds a remove_id sysfs entry to allow users of new_id to later
> remove the added dynid. One use case is management tools that want to
> dynamically bind/unbind devices to pci-stub driver while devices are
> assigned to KVM guests. Rather than having to track which driver was
> originally bound to the driver, a mangement tool can simply:
>
> # echo "8086 10f5" > /sys/bus/pci/drivers/pci-stub/new_id
> # echo -n 0000:00:19.0 > /sys/bus/pci/devices/0000:00:19.0/driver/unbind
> # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/pci-stub/bind

Ah, you do need -n with unbind and bind, you might want to change your
documentation :)

thanks,

greg k-h