diff --git a/include/trace/events/initcall.h b/include/trace/events/initcall.h
index 8d6cf10d27c9..eb903c3f195f 100644
--- a/include/trace/events/initcall.h
+++ b/include/trace/events/initcall.h
@@ -31,7 +31,11 @@ TRACE_EVENT(initcall_start,
 	TP_ARGS(func),
 
 	TP_STRUCT__entry(
-		__field(initcall_t, func)
+		/*
+		 * Use field_struct to avoid is_signed_type()
+		 * comparison of a function pointer
+		 */
+		__field_struct(initcall_t, func)
 	),
 
 	TP_fast_assign(
@@ -48,8 +52,12 @@ TRACE_EVENT(initcall_finish,
 	TP_ARGS(func, ret),
 
 	TP_STRUCT__entry(
-		__field(initcall_t,	func)
-		__field(int,		ret)
+		/*
+		 * Use field_struct to avoid is_signed_type()
+		 * comparison of a function pointer
+		 */
+		__field_struct(initcall_t,	func)
+		__field(int,			ret)
 	),
 
 	TP_fast_assign(