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) {