diff options
| author | Alexandre Courbot <acourbot@nvidia.com> | 2015-09-03 17:39:52 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-19 14:28:38 -0800 |
| commit | 233ffe57007a91dd2f517ac60aa668979c404dbd (patch) | |
| tree | 93330b257d8348be5c96e3ae3c0ada56be1576de | |
| parent | fee906f035f0bd18ff12d84d58766c44a2ab0918 (diff) | |
| download | linux-stable-233ffe57007a91dd2f517ac60aa668979c404dbd.tar.gz linux-stable-233ffe57007a91dd2f517ac60aa668979c404dbd.tar.bz2 linux-stable-233ffe57007a91dd2f517ac60aa668979c404dbd.zip | |
drm/nouveau/pmu: do not assume a PMU is present
commit 579b7c58215329803ce184704463de09f0f310ac 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: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c index 27a79c0c3888..d95eb8659d1b 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c +++ b/drivers/gpu/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); } |