drm: Add reference counting to blob properties

Reference-count drm_property_blob objects, changing the API to
ref/unref.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[danvet: Squash in kerneldoc fixup from Daniel Stone.]
[danvet: Squash in Oops fix from Thiery Reding.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 9 insertions, 8 deletions

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 55ed8f9f45be..5626191f3af0 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -216,6 +216,8 @@ struct drm_framebuffer {
 
 struct drm_property_blob {
         struct drm_mode_object base;
+        struct drm_device *dev;
+        struct kref refcount;
         struct list_head head;
         size_t length;
         unsigned char data[];
@@ -1365,6 +1367,13 @@ struct drm_property *drm_property_create_object(struct drm_device *dev,
                                          int flags, const char *name, uint32_t type);
 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
                                          const char *name);
+struct drm_property_blob *drm_property_create_blob(struct drm_device *dev,
+                                                   size_t length,
+                                                   const void *data);
+struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
+                                                   uint32_t id);
+struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
+void drm_property_unreference_blob(struct drm_property_blob *blob);
 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
 extern int drm_property_add_enum(struct drm_property *property, int index,
                                  uint64_t value, const char *name);
@@ -1528,14 +1537,6 @@ static inline struct drm_property *drm_property_find(struct drm_device *dev,
         return mo ? obj_to_property(mo) : NULL;
 }
 
-static inline struct drm_property_blob *
-drm_property_blob_find(struct drm_device *dev, uint32_t id)
-{
-        struct drm_mode_object *mo;
-        mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
-        return mo ? obj_to_blob(mo) : NULL;
-}
-
 /* Plane list iterator for legacy (overlay only) planes. */
 #define drm_for_each_legacy_plane(plane, planelist) \
         list_for_each_entry(plane, planelist, head) \