[Nouveau] [PATCH] nouveau: don't fail driver load if no display hw present.

[Dave Airlie]

On Wed, 15 Nov 2023 at 05:54, Danilo Krummrich <me at dakr.org> wrote:
>
> On 11/5/23 21:37, Dave Airlie wrote:
> > From: Dave Airlie <airlied at redhat.com>
> >
> > If we get back ENODEV don't fail load.
>
> Maybe worth to note why this is OK in this case, might not be obvious
> to future readers of the code.

Sent an updated version with that fixed.
>
> >
> > Fixes: 15740541e8f0 ("drm/nouveau/devinit/tu102-: prepare for GSP-RM")
>
> Maybe I'm missing something subtle here, but did you maybe pick the wrong
> commit here? At a first glance it looks like commit 073bde453635
> ("drm/nouveau/kms/nv50-: disable dcb parsing") introduced the issue.
>

Nope this commit causes the regression, as it powers off the display
core in devinit, which means later we don't detect it because GSP
doesn't power it back on.

Dave.