On Fri, 18 Aug 2023, Mika Westerberg wrote: > > > > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=216000 > > > Did you get confirmation that this actually solves the issue? > > I've tested this on my setup, it is resolving the issue. > > Right, but it would be good to get confirmation from the person who > reported the issue that this actually helps. There is nothing in the > bugzilla whether the patch worked or not. If you do change the defaults, then please don't forget to update Documentation/admin-guide/kernel-parameters.txt in the same commit accordingly for `hpbussize=nn', etc. NB it seems a common problem with vendor firmware failing to assign a reasonable quantity of downstream buses for hot-plug ports. E.g. with my production laptop back from 2018 a single-device ExpressCard option, such as a PCIe serial port works just fine with hot-plug, however if I hot-plug a whole bus hierarchy in an external enclosure, then the system runs out of buses at the first PCIe switch (unless I use `hpbussize=nn', etc.). Maciej
