Commit 233ffe57 authored by Alexandre Courbot's avatar Alexandre Courbot Committed by Greg Kroah-Hartman

drm/nouveau/pmu: do not assume a PMU is present

commit 579b7c58 upstream.

Some devices may not have a PMU. Avoid a NULL pointer dereference in
such cases by checking whether the pointer given to nvkm_pmu_pgob() is
valid.
Signed-off-by: default avatarAlexandre Courbot <acourbot@nvidia.com>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fee906f0
...@@ -28,7 +28,7 @@ ...@@ -28,7 +28,7 @@
void void
nvkm_pmu_pgob(struct nvkm_pmu *pmu, bool enable) nvkm_pmu_pgob(struct nvkm_pmu *pmu, bool enable)
{ {
if (pmu->func->pgob) if (pmu && pmu->func->pgob)
pmu->func->pgob(pmu, enable); pmu->func->pgob(pmu, enable);
} }
......
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