[PATCH v5 2/3] drm/i915: Fix PXP cleanup missing from probe error rewind

[Krzysztof Niemiec]

Hi Janusz,

On 2025-03-14 at 21:38:34 GMT, Janusz Krzysztofik wrote:
> Commit f67986b0119c04 ("drm/i915/pxp: Promote pxp subsystem to top-level
> of i915") added PXP initialization to driver probe path, but didn't add a
> respective PXP cleanup on probe error.  That lack of cleanup seems
> harmless as long as PXP is still unused and idle when a probe failure
> occurs and error rewind path is entered, but as soon as PXP starts
> consuming device and driver resources keeping them busy, kernel warnings
> may be triggered when cleaning up resources provided by memory regions,
> GGTT, GEM and/or VMA cache from the probe error rewind and/or module
> unload paths because of missing PXP cleanup.  That scenario was observed
> on attempts to fail the probe and enter the rewind path on injection of
> now ignored error in device registration path.
> 
> Fix it.
> 
> Cc: Alan Previn <alan.previn.teres.alexis at intel.com>
> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
> Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik at linux.intel.com>

Reviewed-by: Krzysztof Niemiec <krzysztof.niemiec at intel.com>

Thanks
Krzysztof