isa_dn            562 arch/powerpc/platforms/pseries/iommu.c 	struct device_node *isa_dn, *isa_dn_orig;
isa_dn            582 arch/powerpc/platforms/pseries/iommu.c 	isa_dn = isa_dn_orig = of_find_node_by_type(NULL, "isa");
isa_dn            584 arch/powerpc/platforms/pseries/iommu.c 	while (isa_dn && isa_dn != dn)
isa_dn            585 arch/powerpc/platforms/pseries/iommu.c 		isa_dn = isa_dn->parent;
isa_dn            601 arch/powerpc/platforms/pseries/iommu.c 	if (!isa_dn) {