Re: [PATCH] drm/i915: prevent crash with .disable_display parameter

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On Wed, Jan 18, 2017 at 09:52:35AM +0000, Chris Wilson wrote:
> On Tue, Jan 17, 2017 at 04:37:28PM -0800, clinton.a.taylor@xxxxxxxxx wrote:
> > From: Clint Taylor <clinton.a.taylor@xxxxxxxxx>
> > 
> > The .disable_display parameter was causing a fatal crash when fbdev was
> > dereferenced during driver init.
> 
> The other guards are within intel_fbdev.c, it would be consistent to put
> this as the start of intel_fbdev_initial_config_async().
> 
> Testcase: igt/drv_module_reload/basic-no-display

Also

Fixes: 43cee314345a ("drm/i915/fbdev: Limit the global async-domain synchronization")
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Lukas Wunner <lukas@xxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v4.8+

-- 
Chris Wilson, Intel Open Source Technology Centre
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