From 579b7c58215329803ce184704463de09f0f310ac Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Thu, 3 Sep 2015 17:39:52 +0900 Subject: [PATCH] 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 given to nvkm_pmu_pgob() is valid. Signed-off-by: Alexandre Courbot Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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); } -- 2.20.1