(subset) [PATCH drm-misc-next 3/5] drm/imagination: vm: fix drm_gpuvm reference count

[Maxime Ripard]

On Sat, 25 Nov 2023 00:36:38 +0100, Danilo Krummrich wrote:
> The driver specific reference count indicates whether the VM should be
> teared down, whereas GPUVM's reference count indicates whether the VM
> structure can finally be freed.
> 
> Hence, free the VM structure in pvr_gpuvm_free() and drop the last
> GPUVM reference after tearing down the VM. Generally, this prevents
> lifetime issues such as the VM being freed as long as drm_gpuvm_bo
> structures still hold references to the VM.
> 
> [...]

Applied to drm/drm-misc (drm-misc-next).

Thanks!
Maxime