* Matthew Howell <matthew.howell@xxxxxxxxxxxx> [230905 16:43]: > On Tue, 5 Sep 2023, Tony Lindgren wrote: > > Maybe check if rmmod 8250_exar now somehow causes the following insmod > > 8250_exar attempts to fail? > > Could you clarify what you mean? It is at that stage that I normally see > the error in dmesg unless I have reverted the port id patch. In other > words, if I just load it as-is I get the error in question. > > Do you mean to try loading the installed kernel module with insmod? > If that is what you mean, I just tried loading the included binary with > insmod but did not get the error and it loaded correctly. I loaded it > with: > > sudo insmod /usr/lib/modules/6.5.0-1-MANJARO/kernel/drivers/tty/serial/8250/8250_exar.ko.zst I meant maybe reloading 8250_exar fails. So the test I would do is build build a plain v6.5 kernel, boot it, modprobe 8250_exar, rmmod 8250_exar, and then again modprobe 8250_exar. So maybe the first modprobe 8250_exar works after boot, but the second modprobe 8250_exar won't? > Do you see anything concerning or possibly incorrect with the way I am > building the 8250_exar module? No I don't see how that would make a difference. Regards, Tony