Alexandre Courbot
2015-Sep-03 08:39 UTC
[Nouveau] [PATCH v2] 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 at nvidia.com>
---
drm/nouveau/nvkm/subdev/pmu/base.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drm/nouveau/nvkm/subdev/pmu/base.c
b/drm/nouveau/nvkm/subdev/pmu/base.c
index 27a79c0c3888..d95eb8659d1b 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);
}
--
2.5.1