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...hout it, we get a null deref (i.e. oops) on GF117 GPUs which for one reason or another don't have the PMU hooked up. That should be fixed in its own right, but that's a separate matter. The issue was introduced in commit e2ca4e7d6e (drm/nouveau/pmu: convert to new-style nvkm_subdev) commit 579b7c58215329803ce184704463de09f0f310ac Author: Alexandre Courbot <acourbot at nvidia.com> Date: Thu Sep 3 17:39:52 2015 +0900 drm/nouveau/pmu: do not assume a PMU is present Some devices may not have a PMU. Avoid a NULL pointer dereference in such cases by checking whether the pointer...