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| author | Alexandre Courbot <acourbot@nvidia.com> | 2015-09-03 17:39:52 +0900 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2015-10-22 09:11:26 +1000 |
| commit | b4a54dbb5ff822af792cbe41d44b951b843dd982 (patch) | |
| tree | 3a65d2f63694e6e87441475bcfa77888d385b3b0 | |
| parent | 6252ca2b03bb316483810582e0baf537fcdc1ecb (diff) | |
| download | nouveau-b4a54dbb5ff822af792cbe41d44b951b843dd982.tar.gz | |
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 given to nvkm_pmu_pgob() is
valid.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drm/nouveau/nvkm/subdev/pmu/base.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drm/nouveau/nvkm/subdev/pmu/base.c b/drm/nouveau/nvkm/subdev/pmu/base.c index 27a79c0c3..d95eb8659 100644 --- a/drm/nouveau/nvkm/subdev/pmu/base.c +++ b/drm/nouveau/nvkm/subdev/pmu/base.c @@ -28,7 +28,7 @@ void nvkm_pmu_pgob(struct nvkm_pmu *pmu, bool enable) { - if (pmu->func->pgob) + if (pmu && pmu->func->pgob) pmu->func->pgob(pmu, enable); } |