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path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
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Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
index 7fdd306a48a0..f07647a9a9d9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
@@ -706,11 +706,15 @@ int amdgpu_vm_pde_update(struct amdgpu_vm_update_params *params,
struct amdgpu_vm_bo_base *entry)
{
struct amdgpu_vm_bo_base *parent = amdgpu_vm_pt_parent(entry);
- struct amdgpu_bo *bo = parent->bo, *pbo;
+ struct amdgpu_bo *bo, *pbo;
struct amdgpu_vm *vm = params->vm;
uint64_t pde, pt, flags;
unsigned int level;
+ if (WARN_ON(!parent))
+ return -EINVAL;
+
+ bo = parent->bo;
for (level = 0, pbo = bo->parent; pbo; ++level)
pbo = pbo->parent;