Merge tag 'powerpc-4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...

[karo-tx-linux.git] / drivers / gpu / drm / drm_global.c

diff --git a/drivers/gpu/drm/drm_global.c b/drivers/gpu/drm/drm_global.c
index b404287abb976745c9a4eb8a927f59c473ddd084..b2dc21e33ae0db819fe73850e70c1140435f9464 100644 (file)
--- a/drivers/gpu/drm/drm_global.c
+++ b/drivers/gpu/drm/drm_global.c
@@ -63,6 +63,18 @@ void drm_global_release(void)
        }
 }
 
+/**
+ * drm_global_item_ref - Initialize and acquire reference to memory
+ * object
+ * @ref: Object for initialization
+ *
+ * This initializes a memory object, allocating memory and calling the
+ * .init() hook. Further calls will increase the reference count for
+ * that item.
+ *
+ * Returns:
+ * Zero on success, non-zero otherwise.
+ */
 int drm_global_item_ref(struct drm_global_reference *ref)
 {
        int ret = 0;
@@ -97,6 +109,17 @@ error_unlock:
 }
 EXPORT_SYMBOL(drm_global_item_ref);
 
+/**
+ * drm_global_item_unref - Drop reference to memory
+ * object
+ * @ref: Object being removed
+ *
+ * Drop a reference to the memory object and eventually call the
+ * release() hook.  The allocated object should be dropped in the
+ * release() hook or before calling this function
+ *
+ */
+
 void drm_global_item_unref(struct drm_global_reference *ref)
 {
        struct drm_global_item *item = &glob[ref->global_type];