On Mon, Sep 11, 2023 at 09:04:14AM -0400, Matthew Howell wrote: > So it seems like this might not be an issue for typical 'users' of the > kernel, but may impact people who need to build and load 8250_exar > manually for whatever reason, unless I am just building the module > incorrectly somehow. Yes, Linux does not support building a module against one source tree/configuration and attempting to load it into a different kernel at all. You are lucky that this was the only thing that broke :) Thanks for the testing and letting us know that all is good with the tree as-is. greg k-h