s390x/pci: Move some hotplug checks to the pre_plug handler
Let's move most of the checks to the new pre_plug handler. As a PCI bridge is just a PCI device, we can simplify the code. Notes: We cannot yet move the MSIX check or device ID creation + zPCI device creation to the pre_plug handler as both parts are not fixed before actual device realization (and therefore after pre_plug and before plug). Once that part is factored out, we can move these parts to the pre_plug handler, too and therefore remove all possible errors from the plug handler. Reviewed-by: NCollin Walling <walling@linux.ibm.com> Signed-off-by: NDavid Hildenbrand <david@redhat.com> Message-Id: <20190114103110.10909-3-david@redhat.com> Signed-off-by: NCornelia Huck <cohuck@redhat.com>
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