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--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -422,6 +422,9 @@ int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
struct dentry *ent, *root = minor->debugfs_root;
char name[32];
+if (IS_ERR(root))
+ return 0;
+
sprintf(name, "amdgpu_ring_%s", ring->name);
ent = debugfs_create_file(name,
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -2382,6 +2382,8 @@ void amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
struct drm_minor *minor = adev_to_drm(adev)->primary;
struct dentry *root = minor->debugfs_root;
+ if (IS_ERR(root))
+ return;
debugfs_create_file_size("amdgpu_vram", 0444, root, adev,
&amdgpu_ttm_vram_fops, adev->gmc.mc_vram_size);
debugfs_create_file("amdgpu_iomem", 0444, root, adev,
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