2 files changed, 26 insertions, 2 deletions

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 7c5b5f78f1fa..186d62eb063b 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -129,7 +129,7 @@ drm_gem_destroy(struct drm_device *dev)
 }
 
 /**
- * Initialize an already allocate GEM object of the specified size with
+ * Initialize an already allocated GEM object of the specified size with
  * shmfs backing store.
  */
 int drm_gem_object_init(struct drm_device *dev,
@@ -151,6 +151,27 @@ int drm_gem_object_init(struct drm_device *dev,
 EXPORT_SYMBOL(drm_gem_object_init);
 
 /**
+ * Initialize an already allocated GEM object of the specified size with
+ * no GEM provided backing store. Instead the caller is responsible for
+ * backing the object and handling it.
+ */
+int drm_gem_private_object_init(struct drm_device *dev,
+                        struct drm_gem_object *obj, size_t size)
+{
+        BUG_ON((size & (PAGE_SIZE - 1)) != 0);
+
+        obj->dev = dev;
+        obj->filp = NULL;
+
+        kref_init(&obj->refcount);
+        atomic_set(&obj->handle_count, 0);
+        obj->size = size;
+
+        return 0;
+}
+EXPORT_SYMBOL(drm_gem_private_object_init);
+
+/**
  * Allocate a GEM object of the specified size with shmfs backing store
  */
 struct drm_gem_object *
@@ -444,7 +465,8 @@ drm_gem_release(struct drm_device *dev, struct drm_file *file_private)
 void
 drm_gem_object_release(struct drm_gem_object *obj)
 {
-        fput(obj->filp);
+        if (obj->filp)
+            fput(obj->filp);
 }
 EXPORT_SYMBOL(drm_gem_object_release);
 
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index d9c8c6c4639a..9b7c2bb4bb44 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1541,6 +1541,8 @@ struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
                                             size_t size);
 int drm_gem_object_init(struct drm_device *dev,
                         struct drm_gem_object *obj, size_t size);
+int drm_gem_private_object_init(struct drm_device *dev,
+                        struct drm_gem_object *obj, size_t size);
 void drm_gem_object_handle_free(struct drm_gem_object *obj);
 void drm_gem_vm_open(struct vm_area_struct *vma);
 void drm_gem_vm_close(struct vm_area_struct *vma);