drm/gem: simplify object initialization

drm_gem_object_init() and drm_gem_private_object_init() do exactly the
same (except for shmem alloc) so make the first use the latter to reduce
code duplication.

Also drop the return code from drm_gem_private_object_init(). It seems
unlikely that we will extend it any time soon so no reason to keep it
around. This simplifies code paths in drivers, too.

Last but not least, fix gma500 to call drm_gem_object_release() before
freeing objects that were allocated via drm_gem_private_object_init().
That isn't actually necessary for now, but might be in the future.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>

1 files changed, 8 insertions, 12 deletions

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 603f256152ef..1ad9e7ec0119 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -132,16 +132,14 @@ drm_gem_destroy(struct drm_device *dev)
 int drm_gem_object_init(struct drm_device *dev,
                         struct drm_gem_object *obj, size_t size)
 {
-        BUG_ON((size & (PAGE_SIZE - 1)) != 0);
+        struct file *filp;
 
-        obj->dev = dev;
-        obj->filp = shmem_file_setup("drm mm object", size, VM_NORESERVE);
-        if (IS_ERR(obj->filp))
-                return PTR_ERR(obj->filp);
+        filp = shmem_file_setup("drm mm object", size, VM_NORESERVE);
+        if (IS_ERR(filp))
+                return PTR_ERR(filp);
 
-        kref_init(&obj->refcount);
-        atomic_set(&obj->handle_count, 0);
-        obj->size = size;
+        drm_gem_private_object_init(dev, obj, size);
+        obj->filp = filp;
 
         return 0;
 }
@@ -152,8 +150,8 @@ EXPORT_SYMBOL(drm_gem_object_init);
  * 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)
+void drm_gem_private_object_init(struct drm_device *dev,
+                                 struct drm_gem_object *obj, size_t size)
 {
         BUG_ON((size & (PAGE_SIZE - 1)) != 0);
 
@@ -163,8 +161,6 @@ int drm_gem_private_object_init(struct drm_device *dev,
         kref_init(&obj->refcount);
         atomic_set(&obj->handle_count, 0);
         obj->size = size;
-
-        return 0;
 }
 EXPORT_SYMBOL(drm_gem_private_object_init);