1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c
index d7d10f118eaa..30933bb5fd83 100644
--- a/drivers/char/drm/drm_drv.c
+++ b/drivers/char/drm/drm_drv.c
@@ -517,3 +517,17 @@ int drm_ioctl(struct inode *inode, struct file *filp,
 }
 
 EXPORT_SYMBOL(drm_ioctl);
+
+drm_local_map_t *drm_getsarea(struct drm_device *dev)
+{
+	drm_map_list_t *entry;
+
+	list_for_each_entry(entry, &dev->maplist->head, head) {
+		if (entry->map && entry->map->type == _DRM_SHM &&
+		    (entry->map->flags & _DRM_CONTAINS_LOCK)) {
+			return entry->map;
+		}
+	}
+	return NULL;
+}
+EXPORT_SYMBOL(drm_getsarea);