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-rw-r--r--include/rtdef.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/rtdef.h b/include/rtdef.h
index 82c41f73c1..ffafa5db1d 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -779,7 +779,7 @@ struct rt_thread
rt_uint8_t number;
rt_uint8_t high_mask;
#endif /* RT_THREAD_PRIORITY_MAX > 32 */
- rt_uint32_t number_mask;
+ rt_uint32_t number_mask; /**< priority number mask */
#ifdef RT_USING_MUTEX
/* object for IPC */