On Friday 21 January 2022 16:29:44 Martin Mareš wrote: > > On Linux "class+subclass+prog_if" can be different than what is in > > config registers and the purpose of this patch series with new fields is > > to allow user to see difference in lspci. > > > > On Windows access to real config space is not available for non-system > > users. > > Sure, I meant to read it from the config registers only if the back-end > is unable to supply it. And in case "class+subclass+prog_if" is available but "revision" is not available and even it is not possible to read revision from config space (because e.g. due to missing permissions or limitations of win backend)?