Fix some list handling associated with priority inheritance

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@5053 7fd9a85b-ad96-42d3-883c-3090e2eb8679

nuttx/sched/os_start.c

@@ -289,6 +289,18 @@ void os_start(void)
   g_idletcb.flags = TCB_FLAG_TTYPE_KERNEL;
   up_initial_state(&g_idletcb);
 
+  /* Initialize the semaphore facility(if in link).  This has to be done
+   * very early because many subsystems depend upon fully functional
+   * semaphores.
+   */
+
+#ifdef CONFIG_HAVE_WEAKFUNCTIONS
+  if (sem_initialize != NULL)
+#endif
+    {
+      sem_initialize();
+    }
+
   /* Initialize the memory manager */
 
 #ifndef CONFIG_HEAP_BASE
@@ -351,15 +363,6 @@ void os_start(void)
     }
 #endif
 
-  /* Initialize the semaphore facility. (if in link) */
-
-#ifdef CONFIG_HAVE_WEAKFUNCTIONS
-  if (sem_initialize != NULL)
-#endif
-    {
-      sem_initialize();
-    }
-
   /* Initialize the named message queue facility (if in link) */
 
 #ifndef CONFIG_DISABLE_MQUEUE