xen: piix reuse pci generic class init function
piix3_ide_xen_class_init is identical to piix3_ide_class_init except it's buggy as it does not set exit and does not disable hotplug properly. Switch to the generic one. Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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			@ -258,22 +258,10 @@ static const TypeInfo piix3_ide_info = {
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    .class_init    = piix3_ide_class_init,
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};
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static void piix3_ide_xen_class_init(ObjectClass *klass, void *data)
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{
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    DeviceClass *dc = DEVICE_CLASS(klass);
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    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
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    k->realize = pci_piix_ide_realize;
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    k->vendor_id = PCI_VENDOR_ID_INTEL;
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    k->device_id = PCI_DEVICE_ID_INTEL_82371SB_1;
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    k->class_id = PCI_CLASS_STORAGE_IDE;
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    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
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}
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static const TypeInfo piix3_ide_xen_info = {
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    .name          = "piix3-ide-xen",
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    .parent        = TYPE_PCI_IDE,
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    .class_init    = piix3_ide_xen_class_init,
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    .class_init    = piix3_ide_class_init,
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};
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static void piix4_ide_class_init(ObjectClass *klass, void *data)
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