From: Greg Kroah-Hartman <gre...@linuxfoundation.org> Date: Tue, 29 Aug 2017 16:48:50 +0200
> On Tue, Aug 29, 2017 at 02:11:39PM +0200, Geert Uytterhoeven wrote: >> Hi Greg, >> >> On Tue, Aug 29, 2017 at 1:28 PM, Greg Kroah-Hartman >> <gre...@linuxfoundation.org> wrote: >> > On Tue, Aug 29, 2017 at 01:11:31PM +0200, Stefano Brivio wrote: >> >> On Tue, 29 Aug 2017 12:59:00 +0200 >> >> Geert Uytterhoeven <ge...@linux-m68k.org> wrote: >> >> > On Sun, Aug 27, 2017 at 5:03 PM, Greg Kroah-Hartman >> >> > <gre...@linuxfoundation.org> wrote: >> >> > > The IRDA code has long been obsolete and broken. So, to keep people >> >> > > from trying to use it, and to prevent people from having to maintain >> >> > > it, >> >> > > let's move it to drivers/staging/ so that we can delete it entirely >> >> > > from >> >> > > the kernel in a few releases. >> >> > >> >> > (diving into an early boot crash) >> >> > >> >> > Have you tried running this? ;-) >> >> > >> >> > irda_init() and net_dev_init() are both subsys_initcall()s. >> >> > But the former now runs before the latter, leading to: >> >> > >> >> > Unable to handle kernel NULL pointer dereference at virtual address >> >> > 00000004 >> >> >> >> Should be fixed by https://patchwork.ozlabs.org/patch/807006/ >> >> ("[net-next] staging: irda: force to be a kernel module") I guess... >> > >> > Yup, that's the fix for this issue. >> > >> > Geert, does that fix the problem for you? >> >> Thanks, that patch fixes the crash, obviously. >> >> It does mean you can no longer have IrDA in a non-modular kernel. > > Given that irda doesn't really work, I doubt anyone is going to care > about it :) The initialization with everything built-in worked fine before your changes.