diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
index 96ce95c8ac5a..eaea49d08eb5 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
@@ -256,6 +256,7 @@ static const struct drm_i915_gem_object_ops i915_gem_object_dmabuf_ops = {
 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
 					     struct dma_buf *dma_buf)
 {
+	static struct lock_class_key lock_class;
 	struct dma_buf_attachment *attach;
 	struct drm_i915_gem_object *obj;
 	int ret;
@@ -287,7 +288,7 @@ struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
 	}
 
 	drm_gem_private_object_init(dev, &obj->base, dma_buf->size);
-	i915_gem_object_init(obj, &i915_gem_object_dmabuf_ops);
+	i915_gem_object_init(obj, &i915_gem_object_dmabuf_ops, &lock_class);
 	obj->base.import_attach = attach;
 	obj->base.resv = dma_buf->resv;
 
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_internal.c b/drivers/gpu/drm/i915/gem/i915_gem_internal.c
index 5ae694c24df4..9cfb0e41ff06 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_internal.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_internal.c
@@ -164,6 +164,7 @@ struct drm_i915_gem_object *
 i915_gem_object_create_internal(struct drm_i915_private *i915,
 				phys_addr_t size)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_gem_object *obj;
 	unsigned int cache_level;
 
@@ -178,7 +179,7 @@ i915_gem_object_create_internal(struct drm_i915_private *i915,
 		return ERR_PTR(-ENOMEM);
 
 	drm_gem_private_object_init(&i915->drm, &obj->base, size);
-	i915_gem_object_init(obj, &i915_gem_object_internal_ops);
+	i915_gem_object_init(obj, &i915_gem_object_internal_ops, &lock_class);
 
 	/*
 	 * Mark the object as volatile, such that the pages are marked as
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index dbf9be9a79f4..a50296cce0d8 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -47,9 +47,10 @@ void i915_gem_object_free(struct drm_i915_gem_object *obj)
 }
 
 void i915_gem_object_init(struct drm_i915_gem_object *obj,
-			  const struct drm_i915_gem_object_ops *ops)
+			  const struct drm_i915_gem_object_ops *ops,
+			  struct lock_class_key *key)
 {
-	mutex_init(&obj->mm.lock);
+	__mutex_init(&obj->mm.lock, "obj->mm.lock", key);
 
 	spin_lock_init(&obj->vma.lock);
 	INIT_LIST_HEAD(&obj->vma.list);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index c5e14c9c805c..b0245585b4d5 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -23,7 +23,8 @@ struct drm_i915_gem_object *i915_gem_object_alloc(void);
 void i915_gem_object_free(struct drm_i915_gem_object *obj);
 
 void i915_gem_object_init(struct drm_i915_gem_object *obj,
-			  const struct drm_i915_gem_object_ops *ops);
+			  const struct drm_i915_gem_object_ops *ops,
+			  struct lock_class_key *key);
 struct drm_i915_gem_object *
 i915_gem_object_create_shmem(struct drm_i915_private *i915, u64 size);
 struct drm_i915_gem_object *
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
index 4c4954e8ce0a..f36f7d658380 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
@@ -458,6 +458,7 @@ static int create_shmem(struct drm_i915_private *i915,
 struct drm_i915_gem_object *
 i915_gem_object_create_shmem(struct drm_i915_private *i915, u64 size)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_gem_object *obj;
 	struct address_space *mapping;
 	unsigned int cache_level;
@@ -494,7 +495,7 @@ i915_gem_object_create_shmem(struct drm_i915_private *i915, u64 size)
 	mapping_set_gfp_mask(mapping, mask);
 	GEM_BUG_ON(!(mapping_gfp_mask(mapping) & __GFP_RECLAIM));
 
-	i915_gem_object_init(obj, &i915_gem_shmem_ops);
+	i915_gem_object_init(obj, &i915_gem_shmem_ops, &lock_class);
 
 	obj->write_domain = I915_GEM_DOMAIN_CPU;
 	obj->read_domains = I915_GEM_DOMAIN_CPU;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index c76260ce13e3..a1f0cf2519b3 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -551,6 +551,7 @@ static struct drm_i915_gem_object *
 _i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
 			       struct drm_mm_node *stolen)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_gem_object *obj;
 	unsigned int cache_level;
 	int err = -ENOMEM;
@@ -560,7 +561,7 @@ _i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
 		goto err;
 
 	drm_gem_private_object_init(&dev_priv->drm, &obj->base, stolen->size);
-	i915_gem_object_init(obj, &i915_gem_object_stolen_ops);
+	i915_gem_object_init(obj, &i915_gem_object_stolen_ops, &lock_class);
 
 	obj->stolen = stolen;
 	obj->read_domains = I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
index 4f970474013f..1e045c337044 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
@@ -725,6 +725,7 @@ i915_gem_userptr_ioctl(struct drm_device *dev,
 		       void *data,
 		       struct drm_file *file)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct drm_i915_gem_userptr *args = data;
 	struct drm_i915_gem_object *obj;
@@ -769,7 +770,7 @@ i915_gem_userptr_ioctl(struct drm_device *dev,
 		return -ENOMEM;
 
 	drm_gem_private_object_init(dev, &obj->base, args->user_size);
-	i915_gem_object_init(obj, &i915_gem_userptr_ops);
+	i915_gem_object_init(obj, &i915_gem_userptr_ops, &lock_class);
 	obj->read_domains = I915_GEM_DOMAIN_CPU;
 	obj->write_domain = I915_GEM_DOMAIN_CPU;
 	i915_gem_object_set_cache_coherency(obj, I915_CACHE_LLC);
diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_gem_object.c b/drivers/gpu/drm/i915/gem/selftests/huge_gem_object.c
index 3c5d17b2b670..892d12db6c49 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_gem_object.c
@@ -96,6 +96,7 @@ huge_gem_object(struct drm_i915_private *i915,
 		phys_addr_t phys_size,
 		dma_addr_t dma_size)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_gem_object *obj;
 	unsigned int cache_level;
 
@@ -111,7 +112,7 @@ huge_gem_object(struct drm_i915_private *i915,
 		return ERR_PTR(-ENOMEM);
 
 	drm_gem_private_object_init(&i915->drm, &obj->base, dma_size);
-	i915_gem_object_init(obj, &huge_ops);
+	i915_gem_object_init(obj, &huge_ops, &lock_class);
 
 	obj->read_domains = I915_GEM_DOMAIN_CPU;
 	obj->write_domain = I915_GEM_DOMAIN_CPU;
diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
index f27772f6779a..dac8344507c1 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
@@ -149,6 +149,7 @@ huge_pages_object(struct drm_i915_private *i915,
 		  u64 size,
 		  unsigned int page_mask)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_gem_object *obj;
 
 	GEM_BUG_ON(!size);
@@ -165,7 +166,7 @@ huge_pages_object(struct drm_i915_private *i915,
 		return ERR_PTR(-ENOMEM);
 
 	drm_gem_private_object_init(&i915->drm, &obj->base, size);
-	i915_gem_object_init(obj, &huge_page_ops);
+	i915_gem_object_init(obj, &huge_page_ops, &lock_class);
 
 	i915_gem_object_set_volatile(obj);
 
@@ -295,6 +296,7 @@ static const struct drm_i915_gem_object_ops fake_ops_single = {
 static struct drm_i915_gem_object *
 fake_huge_pages_object(struct drm_i915_private *i915, u64 size, bool single)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_gem_object *obj;
 
 	GEM_BUG_ON(!size);
@@ -313,9 +315,9 @@ fake_huge_pages_object(struct drm_i915_private *i915, u64 size, bool single)
 	drm_gem_private_object_init(&i915->drm, &obj->base, size);
 
 	if (single)
-		i915_gem_object_init(obj, &fake_ops_single);
+		i915_gem_object_init(obj, &fake_ops_single, &lock_class);
 	else
-		i915_gem_object_init(obj, &fake_ops);
+		i915_gem_object_init(obj, &fake_ops, &lock_class);
 
 	i915_gem_object_set_volatile(obj);
 
diff --git a/drivers/gpu/drm/i915/gvt/dmabuf.c b/drivers/gpu/drm/i915/gvt/dmabuf.c
index 13044c027f27..a816aef6142b 100644
--- a/drivers/gpu/drm/i915/gvt/dmabuf.c
+++ b/drivers/gpu/drm/i915/gvt/dmabuf.c
@@ -152,6 +152,7 @@ static const struct drm_i915_gem_object_ops intel_vgpu_gem_ops = {
 static struct drm_i915_gem_object *vgpu_create_gem(struct drm_device *dev,
 		struct intel_vgpu_fb_info *info)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct drm_i915_gem_object *obj;
 
@@ -161,7 +162,7 @@ static struct drm_i915_gem_object *vgpu_create_gem(struct drm_device *dev,
 
 	drm_gem_private_object_init(dev, &obj->base,
 		roundup(info->size, PAGE_SIZE));
-	i915_gem_object_init(obj, &intel_vgpu_gem_ops);
+	i915_gem_object_init(obj, &intel_vgpu_gem_ops, &lock_class);
 
 	obj->read_domains = I915_GEM_DOMAIN_GTT;
 	obj->write_domain = 0;
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index ebe735df6504..a1cb072e4a1b 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -104,6 +104,7 @@ static const struct drm_i915_gem_object_ops fake_ops = {
 static struct drm_i915_gem_object *
 fake_dma_object(struct drm_i915_private *i915, u64 size)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_gem_object *obj;
 
 	GEM_BUG_ON(!size);
@@ -117,7 +118,7 @@ fake_dma_object(struct drm_i915_private *i915, u64 size)
 		goto err;
 
 	drm_gem_private_object_init(&i915->drm, &obj->base, size);
-	i915_gem_object_init(obj, &fake_ops);
+	i915_gem_object_init(obj, &fake_ops, &lock_class);
 
 	i915_gem_object_set_volatile(obj);
 
diff --git a/drivers/gpu/drm/i915/selftests/mock_region.c b/drivers/gpu/drm/i915/selftests/mock_region.c
index 7b0c99ddc2d5..b2ad41c27e67 100644
--- a/drivers/gpu/drm/i915/selftests/mock_region.c
+++ b/drivers/gpu/drm/i915/selftests/mock_region.c
@@ -19,6 +19,7 @@ mock_object_create(struct intel_memory_region *mem,
 		   resource_size_t size,
 		   unsigned int flags)
 {
+	static struct lock_class_key lock_class;
 	struct drm_i915_private *i915 = mem->i915;
 	struct drm_i915_gem_object *obj;
 
@@ -30,7 +31,7 @@ mock_object_create(struct intel_memory_region *mem,
 		return ERR_PTR(-ENOMEM);
 
 	drm_gem_private_object_init(&i915->drm, &obj->base, size);
-	i915_gem_object_init(obj, &mock_region_obj_ops);
+	i915_gem_object_init(obj, &mock_region_obj_ops, &lock_class);
 
 	obj->read_domains = I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT;
 
