Re: [BISECTED]: Black screen on 7.0-rc1

[Linus Torvalds]

On Mon, 23 Feb 2026 at 23:59, Harald Arnesen <linux@xxxxxxxxxxx> wrote:
>
> >> > In fact, I would expect it to be related to one (or both) of
> >> >
> >> >      f2ae92780ab9 ("firewire: ohci: split page allocation from dma mapping")
> >> >      993ab48006b3 ("firewire: ohci: stop using page private to store
> >> > DMA mapping address")
> >>
> >> Should I try reverting one or both of these?
> >
> > Yes. From a quick check, they revert cleanly (revert 993ab48006b3
> > first) and the result seems to compile cleanly too.
>
> I can confirm that the kernel boots with these two reverted.
> I have attached the new dmesg output.

Thanks. I guess it's up to Takashi to figure out what exactly goes
wrong, but it's good to have this confirmed. I hope you'll be willing
to test any patches that Takashi comes up with.

And if we can't figure it out, I guess reverting them is the right
thing, but let's wait until at least rc2 is imminent before we do
that.

             Linus