On Wed, 2017-06-07 at 11:39 -0700, Wesley Terpstra wrote: > It was a while ago that I debugged this. I already reported this bug > to Benjamin Herrenschmidt (now in CC), and I believe he has a patch of > his own to fix the same issue. > > As I understand it, of_core_init sets up the OF entries in > /sys/firmware/devicetree. During platform bringup, when the system > describes the cpu + cache hierarchy, it also makes an of_node symlink > into that directory. However, if it doesn't exist yet, you get the > warning. Ugh... yes I did a patch for that and I think it fell through the cracks, I can't even find it anymore... The patch quoted here is fine I think. Everything in the device model can potentially use OF bits these days, it makes sense to have them initialized earlier. Cheers, Ben. > # ls -l /sys/devices/system/cpu/cpu3/of_node > lrwxrwxrwx 1 root root 0 Jan 1 00:00 > /sys/devices/system/cpu/cpu3/of_node -> > ../../../../firmware/devicetree/base/cpus/cpu@3 > > On Wed, Jun 7, 2017 at 2:35 AM, Mark Rutland <mark.rutland@xxxxxxx> wrote: > > On Wed, Jun 07, 2017 at 09:07:20AM +0200, Geert Uytterhoeven wrote: > > > CC devicetree folks > > > > > > On Wed, Jun 7, 2017 at 12:59 AM, Palmer Dabbelt <palmer@xxxxxxxxxxx> wrote: > > > > From: "Wesley W. Terpstra" <wesley@xxxxxxxxxx> > > > > > > > > This fixes: [ 0.010000] cpu cpu0: Error -2 creating of_node link > > > > ... which you get for every CPU on all architectures with a OF cpu/ node. > > > > I take it this means a /cpus node? Or the /cpus/cpu@* nodes? > > > > I'm not seeing this on arm64 when booting v4.12-rc4 with DT, so clearly > > this doesn't affect all such architectures. > > > > What path are these errors happening in? > > > > Thanks, > > Mark. > > > > > > > > > > This affects riscv, nios, etc. > > > > > > > > Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxx> > > > > --- > > > > drivers/base/init.c | 2 +- > > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > > > diff --git a/drivers/base/init.c b/drivers/base/init.c > > > > index 48c0e220acc0..0dcd17e561d0 100644 > > > > --- a/drivers/base/init.c > > > > +++ b/drivers/base/init.c > > > > @@ -31,9 +31,9 @@ void __init driver_init(void) > > > > /* These are also core pieces, but must come after the > > > > * core core pieces. > > > > */ > > > > + of_core_init(); > > > > platform_bus_init(); > > > > cpu_dev_init(); > > > > memory_dev_init(); > > > > container_dev_init(); > > > > - of_core_init(); > > > > } > > > > -- > > > > 2.13.0 > > > > > > -- > > > To unsubscribe from this list: send the line "unsubscribe devicetree" in > > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
