1 files changed, 5 insertions, 0 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 0a271ca1f7c7..a8e01aaca087 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -349,6 +349,8 @@ struct drm_file {
         struct list_head event_list;
         int event_space;
 
+        struct mutex event_read_lock;
+
         struct drm_prime_file_private prime;
 };
 
@@ -1121,4 +1123,7 @@ static __inline__ bool drm_can_sleep(void)
         return true;
 }
 
+/* helper for handling conditionals in various for_each macros */
+#define for_each_if(condition) if (!(condition)) {} else
+
 #endif