[PATCH] xf86: return NULL for compat output if no outputs.

Chris Wilson chris at chris-wilson.co.uk
Sun Sep 16 23:47:16 PDT 2012

On Mon, 17 Sep 2012 09:48:13 +1000, Dave Airlie <airlied at gmail.com> wrote:
> On Mon, Sep 10, 2012 at 5:11 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> > On Mon, 10 Sep 2012 11:30:01 +1000, Dave Airlie <airlied at gmail.com> wrote:
> >> From: Dave Airlie <airlied at redhat.com>
> >>
> >> With outputless GPUs showing up we crash here if there are not outputs
> >> try and recover with a bit of grace.
> >
> > With this fixed, are we then in a position where all modes can be added
> > later upon hotplug detection?
> It doesn't really have anything to do with hotplug detection so I've no idea.
> This is purely for GPUs which have 0 outputs ever and will never have
> any. I've no idea what would block GPUs that grow outputs.

I'm referring to the code in every driver to abort PreInit if
(!scrn->modes) which I presumed was a limitation of the core. Are we in
a position to be discard those checks and the drivers start up with no
outputs connected?

Chris Wilson, Intel Open Source Technology Centre

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