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path: root/drivers/gpu/drm/drm_gem.c
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Diffstat (limited to 'drivers/gpu/drm/drm_gem.c')
-rw-r--r--drivers/gpu/drm/drm_gem.c26
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 7c5b5f78f1f..186d62eb063 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);