Gleb Natapov <g...@redhat.com> writes: > PCI bus already has one. For ISA bus this patch series uses device's > ioports to uniquely describe it. For isa-ide, for example, get_dev_path > method returns: > 01f0-01f7,03f6 for first IDE controller > 0170-0177,0376 for second one
Any I/O port used by the device identifies it. I'd say a common identifier is the "I/O base", the lowest I/O port used.
